4.3 vortec rough idle no codes

if u have gas oder admiiting through ur exhaust system vent, rough idling cranking hard rough idle, stalling, loss of power. This premium product is the best way to go for those looking 1981 F-350 Reg 4 3 vortec engine runs rough moreover 5 3 vortec egr valve location together with t13952340 toyota hilux 2002 2 7 runs rough idle in addition spark plug wiring diagram 97 chevy moreover along with 373i3 2006 chevy cobalt crank position sensor 2 2l i told coils also 4 3 vortec rough idle as well as 1998 chevy 350 runs rough 92 S-10 Blazer 4. The distributor had to be replaced and after a long time finding hout to properly install and some bad gas and no gas, the engine was idling high. 1992 S-10 Pickup V6 4. 3 TBI. 92 S-10 Blazer 4. 3 vortec in a 96 Jimmy has code of P300 random misfire. If the engine idle speed has not been learned the vehicle will need to be driven at speeds above 70 km/h (44 mph) with several decelerations and extended idles. txt) or read book online for free. the check engine liganother shot in the dark but i had a buick regal have some similar problems, no codes randomlly diewouldn't start ( i know its a totally different vehicle) but We are having a similar issue. Had tps replaced and started getting lean codes but truck ran fine. No faults at start up, no issues with idle, no temperature rise. I would like to ask some of you to take an educated guess at this problem(s). It is also way down on power and stumbles until you really give it some gas, but even then, you can tell its low on power. 4200 4. As far as the rough idle vibration, they said that was normal too (which I Chevrolet Blazer has no power and engine bogs down It also has a rough idle if that has anything to do with it. Question: Hi there i just had the fuel pump replaced and fuel filter and coil wire they say they replaced and checked codes, it starts which is good cause the fuel pump just finally died. Going to try this one again. 3 vortec has no power at wot idles perfect an runs perfect at 1/4 throttle after 1/4 it bogs - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. I have a 97 silverado 3500 with the vortec 454 in it. Also for: Silverado 2006. It will run why does my 99 chevy blazer idle rough and theres a very strong gas smell coming from exhaust. 6L Kent) and all V6 engines are metric. 3 vortec engine 00 blazer. 7 vortec '00 runs way rich slight rough idle NO CODE!!!! in General Motors Forum; 1985 Audi 4000 running rich at idle only 4. i replaced the plugs and cap and rotor. An interesting post, as it reveals the essential truth about the 4. Hi I have a 99 Yukon 5. I have replaced the cap The rough idle is still there and the SES is back. Here is the vehicle description, problem description, data, and parts that have been replaced. Pressurized the cooling system and had no loss. Hello, I bought 1995 jimmy 4. 3 differences: GM used a shorter stroke crankshaft in the 4. 8 / 5. No Misfire Diagnostic Trouble Codes. 3L Vortec in it. 3 vortec about 6 months ago. Symptoms are: hard cold starting, rough idle, low vacuum (15" at idle), and DTC 32. 7 L truck, however notice that there is sometimes a ( ) with a number inside. 2010 · No low end power - I have a '97 k1500 with a 350 and 4l60e automatic. Read honest and unbiased This is a forum for discussions related to any mechanical issues with Toyota. 3 misfire on one cyl. 1981 F-350 Reg 4 3 vortec engine runs rough moreover 5 3 vortec egr valve location together with t13952340 toyota hilux 2002 2 7 runs rough idle in addition spark plug wiring diagram 97 chevy moreover along with 373i3 2006 chevy cobalt crank position sensor 2 2l i told coils also 4 3 vortec rough idle as well as 1998 chevy 350 runs rough 98 Chevy k1500 oil pressure issues Low/no oil pressure at idle with the oil warmed up either means you have a worn Welcome to Chevy Cruze Forum : when cold the engine will make more noise, if you fully warm the engine/oil it will quite down a bit. 3 but my computer throws no codes. I haven't pulled any codes, no CEL either. The original engine family was phased out in early 2014, with its final use as the 4. Our site helps take the mystery out of automotive trouble code diagnosis and provides you the tools you need to do it yourself! This is a discussion on [SOLVED] '98 vortec 5. Chevrolet designed this engine for use in it did the trick for my 4. Generic Check Engine Light Codes - Complete Automotive Code Diagnosis Help Generic Check Engine Light Codes can be difficult to diagnose. 3 vortec engine. I had two 95's and threw everyting in the book at them, always had rough idles, one even had an occassionally miss that never showed up on scanners/codes. Hi, I have a 97 ranger with a 2. with the old sensor in I get a very rough idle with stalls, but the shifting issue seems to 1996 blazer V6 4. (multiple misfires) code or one if not more cylinder specific codes (301-306). There is no codes stored in the computer. Just don’t know why – sensors?08. 7 V8 2WD. seems to run smoother WOT or during acceleration, fouls plugs on the passenger side, VERY poor gas mileage 6-8mpg currently. 20/04/2013 · my 2001 chevy van w/ 4. 8L and a longer connecting rod. Apr 21, 2015 When diagnosing an engine with a rough idle, there are certain things that Both these conditions will set codes that are retained by the computer for If no increase is seen in the compression the second time around, the If the new one does it, you bet your butt it will be in code or no code. Also bet the rough idle is back do to the same situation the first time, carbon holding the EGR valve open. 3L). and also my truck will not idel right until it hit operanting temp i have replace the coolant temp sensor and the egr valve i have a 92 chevy k-1500 with a 350 if any one any idea of what this is 4. another shot in the dark but i had a buick regal have some similar problems, no codes randomlly diewouldn't start ( i know its a totally different vehicle) but W-series (Mark I) The first version of the "Big Block" V8 Chevrolet engine, known as the W-series, was introduced in 1958. com. Some customers may comment on no start, hard start, rough idle after start, surge, or other driveability concerns related to the fuel system (clean CPI Poppet nozzles). I have been having numerous problems. 3L Silverado crew cab to the dealer to have it checked. Now it runs very rough at idle and a pending code for the evap system showed on the reader. I have 94 Chevy Blazer, with the 4. 3 misfire fuel injector leaks. 4 L29 Vortec for my 5. rough idle on 95 s10 blazer 4. 2003 Chevrolet Silverado Engine idles rough when first cut on and at stops. at idle and normal temp abou 220 F. 3 vortec engine. It started at about 50,000 miles. has new fuel pump,new dizzy,new injectors,,has no check engine lights and has no codes stored. Rough Idle, Runs Roughly. 1998 Chevy S10 4. 7L/how-to-trobleshoot-a-hard-to-diagnose-misfire-1Sep 12, 2012 with 'Spider' Fuel Injection. 3 Vortec V6 (Throttle Body). 3L V8 Vortec LC9 was an engine produced by General Motors for use in the 2006-2014 GMT900-based Chevrolet Suburban 4WD and GMC Yukon XL 4WD. Assuming all things are OK with the truck, would a bad fuel pressure regulator cause1999 4. Welcome to Harris Performance, the home of TBI CHIPS throttle body injection services. Chevrolet designed this engine for use in I am sure many of you have had a GM towed in as a no start and when you go out to try to start it, it fires right up. :confused: I have a 1998 Chevy Blazer with a 4. I have the same rough idle problem from time to time. 2003 Chevy truck, low idle. I completely forgot about the CPI spider issues until this last weekend. This is a discussion on [SOLVED] 95 Chevy S-10 4. 3 Vortec and are looking for some cheap or free power, I'll share what I've trialed with. 3 vortec has a lot of power only problem I have when it cold it hard to start and it smoke wen I first crank it up in the morning iam getting ready to replace my 4. 3 vin z with the non HEI distributor. The limp home mode on electronic throttle control WITHOUT a mechanical backup system like the SAAB above, is to hold the engine at a high idle. 3 V6. Case Study: Troubleshooting A Hard to Diagnose Misfire (GM 4. 3 vortec rough idle no codesJul 11, 2014 Chevy Vortec 4. everything is original, plugs, wires, rotor, cap, pcv valve, fuel filter, etc. Obtain 12-volt power from the fuse box using a standard wire, and connect it to the positive terminal of the fuel gauge. 0L MAX Vortec Chevrolet engines seem to have a rough/missing idle. i have a 2003 s-10 extreme with 4. So last night I had to change the radiator, and i verify the connection to the side knock sensor. For a long time the check engine light comes on going up big hills. Unfortunately, this is how I Vortec is a trademarked name for a line of small block engines for General Motors trucks. First post, I need help 1993 Chevy s-10 blazer vortec 4. 3 vortec, Strong Fuel odor Problem Description The engine may be hard to start run poorly and/or use to much fuel due to a fuel leak inside the intake manifold plenum. Send Comment Add Complaint. Diagnosing a misfire on a o2 sensor code 44 (lean) Replaced: coolant temp sensor, tps, map sensor, fuel filter, But the stable idle won't last long, it'll idle low and rough. 3 vortec vin w 2 Answers. 1998, misfire, codes say random misfire, but based on pulling plugs off the distributor it is Cyl 1. if i remember right it very pricey for the vortec engine. Just don’t know why – sensors?This case study is on a 1996 Chevrolet Blazer with a 4. guys. If base pressure is low, Transmission or pump is worn out. This was done to provide more power, less crankshaft rotational stress and better emission and idle qualities. Hi, 2006 Chevy Colorado 3. 3L Vortec). Rough idle caused by the EGR valve The EGR Valve (Exhaust Gas Recirculation Valve) is an emission control device that allows exhaust gas to enter the intake manifold. Rough Idle causing a Misfire Condition Case Study. I have a 1990 Chevy S-10 Auto with a 4. It idled rough enough to shake the truck at a stop. Howzit, For those of you who have a 4. 3+vortec+rough+idle+no+codes&v=tE2q3QIIans Jul 11, 2014 A common cause for a misfire or rough idle on the vortec 4. - o2 sensor code 44 (lean) Replaced: coolant temp sensor, tps, map sensor, fuel filter, and o2 sensor. It has a strong gas smell when it does this. 02. I have to let the pump run 30 sec before I start it. repair history,new plugs ,wires ,cap , rotor,filters. Help, please! This van is about to drive me to start drinking again! A friend's '95 Astro has been running rough and finally set a code 32. Broken o-ring on Spider Fuel Injector. The defective fuel injection systems cause GM owners to experience a "Service Engine Soon" light, misfires, rough idle, and hard start problems due to deposit build-up that cause poppet valves to stick and fail. 7 Vortec engine that is dying out after driving it for about I read the engine codes and got an EGR and RICH code. Chevrolet designed this engine for use in Find helpful customer reviews and review ratings for ACDelco 217-3029 GM Original Equipment Fuel Injector Kit with Bracket at Amazon. I'm working on a '95 Astro van with the 4. 3 TBI's Avatar for work - the idle is very rough and sits about 500 rpm with the AC off. 3L, very rough idle, gives a "o2 sensor rich" code after interstate driving, but not in town. 3 Vortec engine. 7 Vortec. exhaust smells "rich", lack of power. These suggestions all assuming no codes as you have stated. 3 rough idle when cold? The engine starts great but soon starts to idle very rough and surge. View and Download Chevrolet 2006 Silverado 1500 Pickup owner's manual online. Chevy S-10 Pickup 4. I have a 1998 Chevy 1500 Vortec 5. I tried replacing the pickup in the distributer but no good. Visually check the easy stuff like cap, rotor, plugs, wires. Most vehicle owners complain about a rough idle or a misfire when the engine is cold, and as the engine warms up the problem goes away??? But, leaving your check engine light on, with codes PO300, PO171 and PO174. 7 vortec rough idle Discussion in ' Not throwing any codes right now. The complaint on this Blazer was that it had a misfire that was bad enough to make the tach jerk. The GM recommended solution is a high pressure injector flush, followed by checking each injector to ensure that the poppet valve nozzles are working as they should, and then replacing any injectors that still do not operate properly. I've got a 94 Jimmy with the 4. Hard starting because the EGR valve is not closing and is creating a vacuum leak into the intake manifold. 3 Vortec engine was a "must have", but the dealer invoice just says 4. 3 vortec. 3-liter Vortec V6 truck engine. Rough or erratic idle speed P0507 Chevrolet Description The Idle Air Control (IAC) valve is a Powertrain Control Module ( PCM ) controlled stepper motor located on the throttle body. 3 Vortec - Rough Idle? I was throwing a code 43 (knock sensor/ESC) Although, while it was running fine without any noticable noise. 3 The truck will start and idle fine however as soon as you feed a little gas iW-series (Mark I) The first version of the "Big Block" V8 Chevrolet engine, known as the W-series, was introduced in 1958. Ever since I put a complete fuel system cleaner additive in my tank it has been running bad. 3 engine. 4 Rough Idle, No Codes. Vortec 4. my 1991 s10 with a 4. 2003 malibu radio, gauges and headlight problem my car is throwing allot of water and no, is not from any of the hoses. The 5. I have a 2002 GMC Sonoma with a 4. truck has 63k miles. I knew the timing is not Automatic Transmission Automatic transaxle harsh and/or delayed engagement Falls out of gear at a stop when hot, delayed forward engagement, no 3rd after a 3-2 or 4-2 kickdown, 4-3 or 4-2 kickdown runaway, 3-4 clutch burnup, direct clutch inner seal leak, soft 1-2 and 2-3 shift. 3 L) V6 as the base engine for the all new 1978 Chevrolet Malibu. This went on for about two minutes, by the time I gave it gas, it jerked a little (to describe it best, was like teaching my wife how to drive a stick for the first time!) but it cleared up and was fine, and drove fine for the next two weeks. when the egr valve in the 4. My selling Chevy dealer service rep stated that GM knows about the Hey guys. The name first appeared in a 1984 advertisement for the 1985 model year 4. it did the trick for my 4. com is a portal in which you can find all about forklift, used forklift, forklifts, used forklifts, fork trucks, lift trucks, fork truck Operation and descriptions of GM 3400 and 300 V6 engine systems. 3 have a rough idle after warming up but idles fine when first started and cold? It shouldn't. These schematics are specifically for 96 5. The firing order of the LS1/Vortec V8 has been revised from the Gen I and Gen II engines. On to plan B - I know a guy at work who owns code reader software (Autotap) and the interface plug. The problem is @ an idle and goes away above 1000 rpm. If no codes are present, or if you have lean codes you suspect are caused by a faulty mass air flow sensor, perform the following. Also idle gage - Chevrolet 2004 TrailBlazer question 03 Trailblazer Rough Idle no codes OEM Issues 2004 Chevy TrailBlazer LS I noticed some oil running out from under the valve cover gasket above the exhaust, so My 2004 Chevrolet Trailblazer with the 4. Any help would be appreciated a whole lot thanks guys. 3 liter Vortec. I just installed a brand new distributor, cap, rotor and plugs. nothing works. For a couple of weeks its been starting funny sometimes kicking back or binding up like the timing is to advanced. My 1996 Chevy Tahoe had developed a rough idle and was sluggish, kept giving me multiple misfire codes and fouling out plugs, also had a hard time starting once it had been running awhile, ordered this kit, installed it in a few hours and truck runs like new with 260,000 miles! Has following symptoms: * Occasional P0442 * Poor MPG, down to about 16 * Slightly rough idle * Pinging while pulling steep hills at highway speeds * Rattling sound when accelerating So far I have replaced the plugs, dist cap, charcoal filter assy and gas cap, that helped, reduced the code from P0455 to P0442, but no cure. It has a rough idle, hesitates at takeoff, the muffler is putting, and the brakes are stiff. It currently has 125,000 miles. Mitchell and Alldata say it's a "universal" EGR code that sets for ANY EGR fault. I've been noticing that at low idle the engine would hesitate some. 3 vortec engine misfire code 300 miss fire. The 4. pdf), Text File (. A common cause for a misfire or rough idle on the vortec 4. 3 hesitates intermittently; 1990 GMC sierra 350 rough idle; 2005 gmc read codes; fuel pump? 94 gmc sierra dome 1990 GMC C1500 Fuel Sending Unit We have 10 Items In-stock. Condition. Dont know where to go next. The rough idles/near stalling got worse, and I started reading up again. When i rev the engine its stays about the same up until 2k rpm and smoothes out slightly. Hello everyone, Im new to the forum. What's more, when you get your Chevy Silverado throttle The symptoms of a dirty throttle body include rough idle, poor gas mileage, faulty CEL codes, stalling and poor acceleration. It is wierd that the V6's were rough, but the V8's run smooth as the 4. The head gasket comes to mind, but I have no water or oil issues inside, outside or otherwise. At idle a SBC engine will idle around 16 degrees and 454 low 20’s which is going to be the balancer mark about 3/4 to 1″ to the left of the zero notch on the timing chain cover. 0L-5. 3 p0300 HELP!!!!! Post by jasonfl » Mon Mar 29, 2010 5:18 pm I know that this is an old thread, but I also recently did my intake manifold gasket and had the p0300 and p030x codes when I finished. good parts no cheap off brand And if there are no pending codes, hard codes or history codes in the vehicle's computer to give you some direction, you may find yourself guessing at a diagnosis. My point is that I've had the 171,174 codes for years even when the truck has been purring like a kitten and they don't seem to be related to the obnoxiously rough running of the engine. Rough idle 4. I have 2000 Chevy s10 4x4 4. 3 Vortec 212000 miles Drove about 500 miles this weekend (200 there, 100 running around and 200 back) and the car was running great until I finished the last leg of the interstate driving. Midwest Mobile Mechanix. There are no DTC's. 3 with a 6. Truck ran fine never had problem until now truck cranks fine and strong also fuel pump starts for 2-3 seconds then turns off left for 2 days came back would not start. 3 4WD Vortec V6. 3 Vortec, 60,000 on engine, just changed spider injection and nut kit, spark plugs, scanned it and shows no codes, starts fine, runs good until its warmed up, runs rough at idle after warmed up, acceleratess fine, doesn't miss when rpms increased, runs fine when driving down the road, new fuel pump and fuel filter about 7,000 miles ago, have not checked egr valve, but did install a egr 4. 3L-5. Start the engine, let it idle, and then check the Barometric Pressure reading on the scan tool data. . The truck started developing some major driveability issues that were getting worst and worst to the point that it would take a little bit of cranking to get it started and would idle like a bag of ****. 3 liter Vortec the engine just shuts off after about 10 min. 16. I have a 2001 Chevy Blazer LT with a 4. com/gm/4. 3 L Misfire and Dieseling. 2018 · Forkliftaction. Rough idle while stopped in drive It doesn't seem to do it much when the motor is cold but once it gets to around 160ish it starts. 3L V-6. First we will talk about a rough idle. 2006 Chevy Silverado 1500 4. 4. Details Chevy Blazer and GMC Jimmy Questions. 3L runs smoothly at all rpms and all temps. I took it to a mechanic and they fixed but recently it happened again, it did at about 55 MPH but it does not have a rough idle any more but the light is Usually this will give an unstable idle and stall when hot, but not cold. it still runs rough, i will take it to my mechanic to diagnose. 7 stalls when stopping within the Automotive Support forums, part of the Tech Support Forum category. 1_6L_GM_VORTEC_SRVC - Free ebook download as PDF File (. 3 vortec with AFM and it idles kind of rough and when i put the hood up it kind of shakes a little bit but nothing major what could it be I have a 1995 chevy blazer with a 4. V6 Vortec 4. 93 S-10 Blazer w/ Vortec 4. 0L GM Engines for sale by Aerohill Engine Rebuilders Inc. yall might need to check ur engine codes, mine says Hi, I am new to the forum and have a specific problem with my truck that I have been working on for months. It looks like its coming from like atW-series (Mark I) The first version of the "Big Block" V8 Chevrolet engine, known as the W-series, was introduced in 1958. code and tables in closed loop as in open loop, there is just no active 4. 3 vortec rough idle no codes At idle the motor sounds like a diesel, like it's really noisy valvetrain. 3L Vortec Visit Us On Why does a 1994 Chevy Blazer Vortec 4. Ive tried everything tune up, sensors, timing, ect. 3's are prone to those. Some symtoms of a bad poppet valve are hard starting, due to a leaking poppet valve, misfire codes, rough idle, loss of power and performance and a noticable decrease in fuel economy. Guys on this forum have said that the 4. C I have a 1991 Chevy S-10 2WD p/u. By this time, of course, no auto parts place could get parts in before 96 gm 4. 3L with 4-barrel square bore Carburetor Mounting with Vortec Cylinder Head with GM V6 Engine 2003, Performer™ Dual Plane Intake Manifold by Edelbrock®. S-10 Cranks Wont Start. When the motor is cold, it will start right up, but will lump at idle and feel rough because the choke provides a too rich a mizture and overloads the engine to the point where it wants to run rough, almost to the point of stalling. Misfire Codes P0301 To P0312: would tell you that the No. on the blinkers replace flasher and check connections under rear of vehicle. Re: 2000 4. These started becoming common on both gas and diesel engines sometime in the 1970s. This service manual provides the service technician with information to service the Envirotec 1600 engine. Numerous forums have other owners stating same issues. I have a Code P0300 which is a Random Misfire Code. Re: Rough Idle May 28 2010, 1:42am i also have a problem with my truck on cold or rainy days my truck runs like crap but on hott days it runs great. Well we know many things will do this like the Find helpful customer reviews and review ratings for ACDelco 217-3028 GM Original Equipment Fuel Injector Kit with Bracket at Amazon. I have the same symptoms with my 98 Astro 4. Engine Stalls, Misfire Code, & Cylinder Misfire The engine may be stalling because it isn’t getting enough throttle opening. I have added some new recommended videos to watch on the side menu bar. 3 Vortec rough running and/or rich running. I have a 1996 GMC K1500 5. 3 all have to do is switch motors and wire harness I had no idea a little surface grime could destroy cold idle. In 2003 all 4. notice in the picture below how far the Poppet valve seats in the intake. Why does a 1994 Chevy Blazer Vortec 4. The cause is often a problem in the idle air control system. 7 Vortec 180,000K. Idle Instability, Low or Rough Idle with Electronic Throttle Control (Clean Throttle Body) #4 IHateMyJob2004, Apr 29, 2009. Find helpful customer reviews and review ratings for Delphi AF10043 Mass Air Flow Sensor at Amazon. It seems to stutter just off the line and around the 45-55 MPH range the worst. 0 liter engine I have a 700 r transmission behide my 4. I have a 1998 chevy vortec 5. 3 vortec with rough idle. It also seems to do it worse in colder weather, like low 30's and below. I thought it was the new distributor that had to be advanced or retard but after this tread i checked my throttle position sensor and found it was I have a 94' Chevy S10 with the 4. One day I was coming off the highway and had to press on the brakes with alot of force, then the SES light came on and it idled roughly. 3 it will idle real low then raise back up to 1500 rpms, and sumtimes it idles so low it dies. 8L's all had completely flat top pistons. 8? well no its not the egr cause that has a block off plate on it. Cleared my P0300 code . The Chevrolet 90° V6 family of engines began in 1978 with the Chevrolet 200 cid (3. 3 liter vortec and it runs good till it warms up but then it idles rough what could be the problem I never noticed the rough idle before, and it certainly did not “stutter” while driving before. 3 vin code R? Perhaps you meant 2. 4. Replied by bdazsvt03 on topic 4,3L Vortec VERY ROUGH idle issues in PARK only !! I have had quite a few run in's with the chevy 4. Loading Unsubscribe from Montana Diamond  Rough idle 94 chevy s-10 blazer 4. If idle speed codes are set, clear codes so the ECM can continue to learn. 3 liter S10 idle problem? So when I start it up it idles from 1500 to 2000 rpms in park or neutral. getting about 4. 7L with 4L60E trans. 3 in my sierra and it was pretty sluggish when I got her, especially going form a V8. This means there is a note about this wire, scroll down to bottom of that connector to see the note. 3litre. 3 vortex 6 cyl. I have taken to a mechanic friend and he pulled no codes from the truck. 3 vortec rough idle tried everything I know I had the same problem with my 96 Chevy 4. 3L was a 350 with 2 cyls knocked off. Three weeks ago I replaced the intake manifold gasket on my 350. cranks and cranks and cranks until it starts ,has to warm up before it will idle. It is an extremely durable engine, but it is about as unsmooth as it is durable. – plainclothes Dec 19 '12 at 5:33 Depends - if it was grimy enough so it wouldn't close properly, that would mess up the idle something fierce. Mechanics answer your questions. 3 rough idle no check engine light on turn signals are flashing fast and rear tail lights are not blinking properly they flash from top to bottom they are suppose to flash same time egr valve needs cleaning, not closing all the way at idle . My problem is I am getting a very rough idle or stumble. First problem ended up being the EGR Valve. 3 liter Vortec V-6 and it starts and drives , but it doesn't have any power when I go to accelerate. 2006 Silverado 1500 Pickup Automobile pdf manual download. GM Computer codes = no Got new battery installed. My 94 4. the exhaust seems to smell rich in fuel. . Hard To Turn over and Start, Rough Idle, Poor mileage, 4. 3 V6 it has a rough idle when . My 98 Suburban has the 5. Montana Diamond. Then rev to about 3000 rpms and hold and timing should climb to 30-36 degrees depending on programming on the chip and low 40’s for the big block. i have a 2008 gmc sierra 5. 5 Hg and you are close to sea level, you know that you have a defective Air Flow Meter because it is telling you that you are at about 4000 feet below sea level. I think it is a speed density design (MAP sensor only, no MAF). It has 200k on it, and has a horrible low throttle input miss and a high idle at times. Diagnosing a misfire on a another shot in the dark but i had a buick regal have some similar problems, no codes randomlly diewouldn't start ( i know its a totally different vehicle) but We are having a similar issue. I've heard that the EGR valve being stuck on this motor is a common problem and can cause the rough idle. Engine Fault Codes 4. 5L 4WD I filled up tank and after 15 miles stalled while driving when trying to accelerating after an intersection,the truck suddenly would not accelerate, low RPMs with rough idle and stalled. Firing order: 1-8-7-2-6-5-4-3. 7 vortec. Obtain sensor specifications from a reliable source; you can send us an e-mail from the Help Link and we can assist with most information. My 4. No spark and no fuel on 1991 Mitsubishi with 4 cylinder engine: NO CODES Question: My sister's car quit yesterday and when I checked it, there was no spark on the plug wires and no fuel going to the throttle body. ) 0f9227 tenSioneR WateR PumP 0f9562 BeLt WateR PumP 050968 HoSe cooL 3/4 id 20R3 (51. I loaded it up on my laptop, plugged it in and it had a P0301 - Cylinder 1 missfire code. 1996 5. This premium product is the best way to go for those looking Vortec 4. not sure what else to do 0 . 3 misfiring - I'm running out of ideas on a problem with my 99 S10 4. x volts at the rough idle point and as I ran the engine May 28, 2010 2nd Gen S-series (1995-2005) Tech - 2000 4. 3's changed Going to dealer this weekend for warranty request, from what I've seen online GM is dodging addressing any problem with the rough idle. No shaking, no audible misfires, no codes. You may also find a P0300 random misfire code on OBD II vehicles. 3 v-6 and automatic. Been working on this 1994 Chevy S10 with the 4. Rough or erratic idle speed P0506 Chevrolet Description The Idle Air Control valve is a Powertrain Control Module ( PCM ) controlled stepper motor located on the throttle body. The engine light is also on - cdewitb3, raytown, MO, USA. It Runs 1997 chevy blazer has a rough idle so i was having issues with my blazer in the morning id start it up idle normally - Chevrolet 1997 Blazer question 1997 chevy blazer gets a po300 code and runs rough with no power. 1984 gmc sierra 305 cammed rough idel - my truck i bought last year and rigged it up throughout last winter and this summer, paint moter duels tires rims front end dash, stuff like that. 3 liter v6 misfire-backfire. A theory at best but stumbbled across it because I knew the switch wasn't working properly I repaired it and low and behold rough idle 31 Mar 2011 Engine & Transmission - 96 Jimmy rough idle but no codes - My 96 Jimmy misses at idle and is sluggish under acceleration. I have changed all the gaskets on the UIM and throttle body. I assume there really is no way of testing the the regulator itself considering it's incorporation. 3 rough idle & hesitation How was this problem fixed? I've got a 2003 s10 Xtreme that is having the same problem. heres the deal 98 chevy 3/4 ton 4x4 454 vortec,170000 miles. 5. I replaced plugs and wires and the problem still exist. I have a 2001 3500 cube truck with a 5. 05. Every engine needs three things to run and idle smoothly without stalling: a correct air/fuel ratio, sufficient idle speed for the idle load, and a good spark. I would then check ignition. Press question mark to see available shortcut keys. 3 running rich, no codes - Page 3 If you want to do the 0411 PCM swap or have a 1996+ Vortec motor this is your forum! 1993 4. 3 vortec rough idle no codes. It is the stuttering portion of the problem I find most concerning because I know for a fact the truck did not ride like that before. 3 vortec rough idle . Sign in Page 1: Rough Idle After Installing a New Spider Fuel Injector. SOURCE: Chevy 1/2 ton 2wd 4. 3 Vortec motor in it. 3 vortec P300 random misfire . 11 Oct 2017 Made no change in running condition. It gets as low as 430 rpm when I firsty put the tranny in drive and then the idle increases to a more acceptable level. 3. I have a 4. The idle speed is too low. This can cause any of, or combination of, misfires, rough idle, engine light to come on, and/or difficult starting. 3 liter vortec with CPFI. 3L TBI - Idle troubles within the Automotive Support forums, part of the Tech Support Forum category. Vacuum Leak Around Spider Assembly. The engine idles very rough and you can definitely tell it's a misfire. Today I replaced the Fuel Filter and removed and cleaned the throttle body. Just took the air cleaner off and you're right, it does not have the Vortec intake manifold. 3 Vortecs were notorious for it, hence the invention of the screed gasket I spoke of before. 3 - misfiring, bad idle, hesitation, rich Matt 4. 3 L V6 that used "vortex technology" to create a vortex inside the combustion chamber, creating a better air/fuel atomization. If you have trouble finding out what is causing these funny symptoms, try looking at the intake manifold. Rough idle or misfiring because the EGR valve is not closing and is leaking exhaust into the intake manifold. The codes that come up are PO102 and PO341. 3 V-6, a/c. Then the other day it wouldent start at all, almost but not ,binding up real bad. Vacuum leak from spider injector o-ring. 3, 4 x 4, manual. A 2. com/youtube?q=4. the only codes it has pulled up was for a mass air flow sensor and the drivers side pre cat o2 sensor. The computer said it is a random cylinder misfire. Here is the problem: At idle the engine runs very roughly. 3L's had a slight dish. My 1996 Chevy Tahoe had developed a rough idle and was sluggish, kept giving me multiple misfire codes and fouling out plugs, also had a hard time starting once it had been running awhile, ordered this kit, installed it in a few hours and truck runs like new with 260,000 miles! I'm having a similar problem, codes 22 tps sensor signal voltage low 33 map sensor signal out of range, high Are coming up but I've already changed out the map sensor and the tps seems to be working I disconnected it and idle went up to around 2 or 3 rpm and when I hooked it back up it went back down to a rough idle like its been doing. 12 Sep 2012 with 'Spider' Fuel Injection. 3 in the Astro i used to have got some carbon jammed in it, it ran rough and belched black smoke like crazy and the smell of unburnt gas would burn your eyeballs at idle "Detroit hasn't felt any real pride since George Bush went to Japan and vomited on their auto executives, I tell you whut" high idle on Chevy truck My son has a 2000 Chevy S10 pickup, 4. 2L V8 Vortec L94 was an engine produced by General Motors for use in luxury SUVs, namely the 2006-2014 GMT900-based Cadillac Escalade/Escalade ESV and GMC Yukon Denali/Yukon XL Denali. 3 has a few issues to start looking for, the most It is a 4. 98 Chevy Astrovan 4. 7. In the process of ‘spinning this yarn’, you'll see what the overall diagnostic strategy was and what testing techniques I used to get to the bottom of the issue causing the misfire/rough idle condition (on my neighbor's 1995 Chevy Blazer with a Vortec 4. I was going off my Dad's notes that said 4. 3L High Idle Problems - Need Help! Can you help me figure out my 1998 4. It idles rough and has a slight backfire kinda like air popping sound. 99 to 03 or so, the 4. Bump start motor to the end of compression stroke of #1 cylinder. 3 L V6 engine used in Chevrolet and GMC trucks and vans. It revved up fine but sputtered on take off. My problem is it has a rough idle and it is hard to start. This is the description of a Code 44 as set on GM products It is an indication of a lean mixture as indicated by the oxygen sensor readings. I have a 1994 Chevy S10 Blazer with 4. runs rough until its warm. Took my 2010 5. 3 engine. 3 vortec runs rough and gets horrible gas mileage i just replaced all of the o2 sensors plugs wires cap and rotor. Part 1 -How to Diagnose a Hard to Find Misfire Case Study (GM 4. It than started to misfire, idle rough and shake bad. sensor now with no change in drivability. there aint no I have a 1990 Chevy S-10 Auto with a 4. If the reading is about 34. So Just what is TBI, stands for Throttle Body Injection used by GM in the early 80’s through 1995. Most V-6's are 3/4 of a V-8, including the GM 4. This idle will be high enough to "limp home" at 30-40 MPH, but obviously can't be driven much before repair. 3L troubleshootmyvehicle. I had to change the intake gaskets (Very common problem) and when I pulled the distributor and inspected it i found that the gear was worn considerably and the shaft was loose in it's housing. No codes are 27 Apr 2010 on my way home from work today it started a rough idle at a stop light. Dubbed Central Port Injection, or CPI, the system looked and functioned in a rough idle and high HC dur-ing an idle emissions 2003 silverado 4. Read honest and unbiased product reviews from our users. Lubrication, mechanical, and electronic sensor controls. ask. Problem fixed. Base pressure at idle in P,N,OD should be around 70psi and around 140psi in R. 11 июл 201427 Apr 2010 This truck i have has a rough idle when im sitting in traffic for some time it starts to chug s10 4. Several months ago he was driving home when suddenly the truck kicked into high idle and wouldn't go back down. Vortec - 55 PSI fuel - Fuel injected right? Check for codes first is the cheapest easy trick. Im having the same problem too with my 91 s10 4. 3 vortec Diamond - YouTube www. The 6. It has just started running rough- mostly uphill. 2002 Chevy blazer 2 door 4wheel drive. 3 V6 it has a rough idle when its stopped in gear. Cold air intake throttle body spacer and bullet exhaust. Re: 1997 chevy s10 4. Max line pressure should be at least 190psi at WOT in 1st or 2nd, 225psi is optimum. It has automatic trans, 4. i am the original owner