Silverado Rough Idle No Codes

If idle speed codes are set, clear codes so the ECM can continue to learn. 3 has developed a rough idle and would throw a p0175 code. me that the code and the rough idle are caused by a leaking intake manifold gasket. Bought new Silverado because of complications with the old one ran good for about a week then it started to idle rough like it was missing. I have a 2017 Chevy Z71 with a 5. The 2007 Chevrolet Silverado has 3 problems reported for rough idle. I read it and it was a P0300 Random/Multiple Misfire. the tach read 0 yes zero and below, llights are dim and driving my tach reads normal untill i slow down the the problem reoccurs. no leaks seen so far in boots or hoses checked n cleaned idle valve,. 7L that will not idle. The only codes were P0171/P0174 I went the path of the MAF because after cleaning the original MAF seems to get better at higher idle but not on low idle, after reading website MAF was one of suggestive issue's. My daughters car had a rough idle and a P0300 code. CarComplaints. The engine was running rough (misfiring) between idle and 1600rpm when cold. after replacing the motor it will not idle,and stalls out when stopping, also noticed that the motor surges, when applying the throttle it will rev up,but it will try to die off unless you let off accelerator a little and reapply. My truck keeps running with a rough idle and the engine light goes on. I read it and it was a P0300 Random/Multiple Misfire. I just bought an Actron U-Scan to try to get more info, but it shows no info in misfires. The thing is the truck idles fine when cold but gets rough once warmed up. 2000 chevrolet silverado, misfire on #5 cyl,test says EGR valve, replaced this and no change, replaced plugs, no change, but now test says multiple misfires, ran compression test 75% on 3 cyl. 99 Silverado 5. This pretty much solved my rough idle. All the while stuttering like it has a bad plug Alt & Batt tested good Belt and tensioner good. The truck runs rough at idle, though smoothes out as the rpm's rise. Replaced the spark plug and the idle got somewhat better for a short time. SOURCE: 2003 Silverado rough idle, idles good after "check engine" light. Top 5 Performance Mods for Horsepower. Re: Rough Idle. 10-15 psi at the fuel rail and it holds it when the engine is off. This article covers a wide variety of noises common to the hard working Chevrolet Silverado. Replied by BULL116 on topic 95 Silverado 305 rough idle Well I just bought the truck a couple weeks ago and the guy I got it from had given it a tune up a few months back. This is a discussion on [SOLVED] 1990 chevy silverado 5. I've got a 2007 Silverado 2500HD 6. Honda Engines offers a full line of small 4-stroke engines. 2004 chevy silverado code p0300 with p0171 and rough idle. Chevrolet Silverado 1999-2006: Common Noises Diagnostic. Any codes? Sounds like a dirty EGR valve. [SOLVED] 1990 chevy silverado 5. 2005 silverado with engine codes of 131,300, and 171 burns rich ,rough idle its been cold outside any ideas? This 2005 Chevy Silverado is due for the 150,000 mile. i just got a 2004 ext cab silverado 4x4, 5. Check your o2 sensor voltage, those trucks are real bad for o2 sensors, and yes if one sensor is reading 0mv, the others will start to drop out, and the vehicle will run very, rough. Fuel regulator had good vacuum and has no fuel leaking. now still has a little miss and engine sound like it wants to come appart at idle, as soon as you raise it off idle or load up the. Audi OBD2 codes; Audi won't start; BMW OBD2 codes; Camry rough idle or stall; Caravan surges at highway speeds; Check engine light and P0300 misfire codes on Silverado Sierra. I think the heater code only occurs if its an open or a short. When I was. I took it to the dealership and they said it was a fuel injector going bad. Rough idle and worse in cold temps. I have same problem on my 07 silverado, code for stabilitrak problems and fuel injector 8; this the third time time happen, I has replaced the brake light switch (29. Honda Engines offers a full line of small 4-stroke engines. I took off. 7 litre engine,it has a rough idle with no engine light and no codes. I have tried unplugging coils 1-5 (can't get to 6 right now) individually but cannot find any change in how it is running. Plugs have about 40k on them. THE FIX IS RESEALING. Replaced MAF and it was somewhat better but Check Engine light remained. No steady idling. 10-15 psi at the fuel rail and it holds it when the engine is off. I took off. I took it to the dealership and they said it was a fuel injector going bad. Cause This condition may be caused by a fuel trim value not being reset after an intrusive evap purge test, causing a temporary lean condition. Does anybody know what might be the problem here?. '04 Silverado, 4. My understanding is the P0172 and P0175 are rich codes and the P0446 is regarding the Evap system. now still has a little miss and engine sound like it wants to come appart at idle, as soon as you raise it off idle or load up the. i have a 04 chevy silverado with the 5. Upstream o2 sensors are disconnected shop did the tune and I had no CEL or issues untill now. The first sign of the problem was the service engine light would blink intermittently when driving on the highway or revving the gas. This pretty much solved my rough idle. Maf not mas. If you're experiencing a rough idle in an older vehicle with a carbureted engine, the process is a little different. The rough idle can also because by a bad camshaft. will idle in 3. I had a crack in the header so I needed one anyway, the new header does not have the cat. The odometer should give you a code instead of mileage. On start up the idle is high (1100rpm ish) for a few seconds then drops to 900rpm but it fluctuates. 0 rough idle no codes keyword after analyzing the system lists the list of keywords related and the list of websites with related content, in addition you can see which keywords most interested customers on the this website. 4 about 39,000 miles just developed code p050d , Daughter just bought this last thursday , what is the fix for this ? I've been seeing. There is a factory service bulletin for the following Chevrolet models: 2006-2008 Chevrolet Trail Blazer 2007-2008 Chevrolet Avalanche. They claimed to run a VAGCOM on it and found no faults, they resetted the computer, re positioned the throttle body and "messed" with the idle control. I've got a 2007 Silverado 2500HD 6. no it seems and is very plausible that one thing triggered another by looking at the codes. A faulty camshaft position sensor is one of them. All FIXED 5. Did a compression test and everything was actually great for it having 237,000 miles. Q: Recently purchased a 2013 Chevrolet Silverado z71 5. Have not checked it out yet but my guess is it’s related. How to fix a rough idle part 2 - Duration: 3 Causes of lean condition trouble codes P0171, P0174 - GM 5 3L. Rough Idle - 2002 S10 Crew Cab I'm a new memberthis Forum is the closest I could find to S10 Pickup'sif there is an S10 Forum please let me know and I'll redirect my question! Vehicle is a 2002 S10 Crew Cab "W" engine (no EGR), AT, 4WD with 108,000 miles on it. I'll see if I can set aside some time to tinker with the Intake Solenoid. Recently my 5. If this condition occurs on your 2001-04 model year Chevrolet Silverado, GMC Sierra; 2003-04 Chevrolet Kodiak or GMC TopKick vehicle within 7 years of the date your vehicle was originally placed in service or 200,000 miles (320,000 km), whichever occurs first, the condition will be repaired for you at no charge. The CEL has been on duri. The weird thing is that it's not regular. attached is log trying to start it and the file. When a vehicle has a problem but no code has been set or when multiple / misleading codes have been setAs the best way to find charging and starting problems. 1989 Silverado 5. It varies between 500-700 but never below 500. the below codes came up. You also may check fuel system pressure, should be almost 60p. com 2015 Silverado code P050D I keep getting a P050D code cold start/rough idle. When mine did the rough idle/no code it turned out to be a bad coil pack. If not, cycle key on, off, on, off, on. Unfortunately however the TSB also indicates that the malfunction indicator lamp (aka check engine light) must be on with a handful of diagnostic trouble codes (DTC's) recorded. Put in gear and it begins to rough idle at 700 to 500 rpm until the throttle is depressed. 0L The trucks got 113k on it, i've replaced the plugs (AC irid plugs), Wires (crane 25ohm firewire), knock sensors, intake gasket, and cleaned the throttle body. If your vehicle is suffering a rough idle condition (after replacing the spider or fuel pressure regulator), take a look at the section: Spider Fuel Injector Assembly O-ring is Not Leaking Vacuum, What Next?. 2 from escalade in off road car with 08 silverado 2500hd 6L e38 ecu and pedal (dbw tb is oe escalade but same part as silverado) and it won't start. But in the day and age where the Chevy Silverado has a sensor for everything, it could literally mean that your gas cap is off, or it could mean catastrophic engine failure is about to happen. Upstream o2 sensors are disconnected shop did the tune and I had no CEL or issues untill now. Idle is most rough, when the engine is first started in the a. How to fix a rough idle/clean, replace IAC valve and the P0300 code chuck kososky. For vehicles with a coil on plug ignition system, a bad ignition coil would cause a misfire in one or more cylinders at once. Last time it logged the code, the Chevy house cleaned the throttle body, and sent it back. Question: My original problem with my 2004 Silverado 5. The truck runs rough at idle, though smoothes out as the rpm's rise. I am going to buy the tools I need to rethread the hole and a fitting bolt that can be properly tightened. Dirty Fuel Injector Modern vehicles are fitted with fuel injection systems, which inject fuel into the cylinders to create a mix of air and fuel to burn. I have a 1990 chevy silverado 5. Thats one problem is CEL does not stay on or store code for long time. Then come to find out the 2014 Chevy Silverado's had a bad vibration traveling speeds between 55-75mph, of course no one could figure out why it vibrated so bad. Code is gone but it runs about the same. P0304 Rough Idle OEM Issues. If your vehicle is suffering a rough idle condition (after replacing the spider or fuel pressure regulator), take a look at the section: Spider Fuel Injector Assembly O-ring is Not Leaking Vacuum, What Next?. Its a V6 4. Important: During the drive cycle the check engine light may come on with idle speed DTCs. Anyway, I put a little larger bolt in just to test it. I shut the truck off for about 15 minutes. I have to run some about every 10th tank or so. after that went for a test drive then when i got home I was going to replace the coil on cyl #4 since po354 suggested it, now it's giving me a po300 code and then now it doesn't start no click or anything now I'm thinking the crank position sensor cause. I have a 2017 Chevy Z71 with a 5. Top 10 Causes of a Rough Idle | JL Motorworks. What is the idle on a 1995 5. When driving, there is no issue at all and the truck is running great. 8L V8 Vortec engine started flashing a check engine light. The 2017 Chevrolet Silverado 1500 has 20 NHTSA complaints for the engine at 20,423 miles average. Dealership “repaired” my car twice and I still have a rough idle, gas smell and check engine light. The fact that you might be able to get the pintle to move does NOT mean that the EGR valve is OK. i have an 06 GMC 3500 Cab and chassis with a 6. 3 has developed a rough idle and would throw a p0175 code. From Day one The Truck seems to have a misfire but Not bad but noticable. 00 Buy on Amazon Price incl. at idle the voltage goes from 12 to 14 just bouncing around , i tryed the the MAF sensor cleaning and it helped somewhat i have already. [SOLVED] 1990 chevy silverado 5. Heres the story. 3 so it wont start up less i give it gas and stay on the gas then once i get it going it spudders like it wants to stall and it spits white smoke out and when i start to drive faster it spits it all out and it kinda stops but then when i come to a stop light it starts pouring white smoke out the back im like wtf a cops gona pop ,me let alone with. White smoke and/or coolant odor may come from the exhaust for an extended period of time at cold start as well. A low rough idle is a CLASSIC sign of a stuck-open EGR valve. i also found an interesting post regarding a "dustbus. I have a 2017 6. It ran like new!!! No rough idle, no jiggling engine!! I don't plan to drive it this way. Research the 2011 Hyundai Sonata at cars. My truck keeps running with a rough idle and the engine light goes on. Pull codes and go from there. com 2015 Silverado code P050D I keep getting a P050D code cold start/rough idle. com and find specs, pricing, MPG, safety data, photos, videos, reviews and local inventory. Asked in Chevy Silverado, Hyundai. It will idle down to around 500 rpms then it will have something almost like a skip and the rpms will bounce very slighty and it causes a little "shake" in the whole vehicle. 7liter 350 engine, i replaced the motor,the other motor had 225,000plus miles. All vacuum hoses look in good order, sprayed carb cleaner around intake to check for leaks at intake/throttle body, no leaks. When this code appears, it means the PCM (powertrain control module, also known as engine control module in other vehicle makes) has determined a rough engine idle during cold start. Took it to the dealership they said that they found no. The truck runs fine no obvious problem. My truck keeps running with a rough idle and the engine light goes on. There are no check engine lights on and no other indications that would help diagnose the problem. THE FIX IS RESEALING. I have > > turned up the idle screw in the base plate of the TBI, which does not > > seem to help, it just goes back to low idle and stalling again, is the > > a way to get that back to the original factory setting? I am presuming > > that screws up the main computer. Then one day it starts bucking and hesitating on take off to the point it wasn't driveable. It's very annoying. Since the idle is actually set in the chip could that be possibly a part of this or should I be looking at something else. 10-15 psi at the fuel rail and it holds it when the engine is off. I cleaned MAF with QC electric cleaner also. Put a new fuel filter on it and ordered a new fuel pump. After the above repairs were complete the car was started and there is a loud squeak, knock, then a rough Idle. checked all vac lines. Recently my 5. Show Full Signature Best Car Insurance | Auto Protection Today | FREE Trade-In Quote. It seems to run fine but at a slightly higher idle then norm. Rough idle and misfiring, but no codes. I took it to the dealership and they said it was a fuel injector going bad. 7 Liter engine with an automatic trans that has been giving me a code 43. Changed all the plugs while it was apart too since there were about 85000 miles on the truck. it revs real high then back real low like it is going to cut itself off. The truck throws no codes, has plenty of pick up, does not sputter BUT at idle it runs choppy. I got rid of a 1999 S10 with 200,000 miles that puured like a kitten. When I went to start it it had a very rough idle and no power the CEL was on also. p0300 code is a random misfire code but it doesn't tell. The most common I have seen is 02 sensor going bad, since there are a ton of codes on for them I would look at other possibilities first. Additional trouble codes can shed some light on the cause. running perfect the other day, stalled out while driving down the road coming to a red light (A/C was on). on top of that upon cold start i get a really jumpy rough idle like im pressin the gas in neutral real quick. If there are misfire codes stored, you will also want to diagnose and repair those prior to diagnosing a P050D. Chevy Truck Forum | Silverado Sierra GMC Truck Forums. The knock sensors are under the intake manifold. Checked TPS, IAC, MAF, Coil and fuel pressure, all good except fuel pressure was 52-54 while idle, replaced fuel pump, screen filter and main filter, cleared code, rough start and rough idle still gives p0300. i have a 1995 silverado 5. Question: My original problem with my 2004 Silverado 5. 9k mode??? and 10K mode. Recently my 2007 Sierra Classic with a 5. To help you narrow down your diagnostic approach, here's a look at the most common causes of the CEL in the Chevrolet Silverado 1500. com : Car complaints, car problems and defect information. 00 Buy on Amazon Price incl. Silverado 5. A few weeks ago I also had a rough idle and no code or anything. Hey guys, 97 prelude sh. I took it to the dealership and they said it was a fuel injector going bad. 3 and have a rough idle. 7 Auto, Code 43 Rough Idle C/K Car Forums IAC Motor, air filter Battery cause I needed one and fuel filter and it idles rough (but lower idle. Sounds mean as hell when it happens. There are several things that can cause your 1999 Ford Crown Victoria to idle rough when it is cold. No codes and many parts later still will not idle in closed loop. C7 ACERT rough idle/miss? Hi folks, first post here on the sight, but after searching the internet I'm hoping you Cat folks can steer me in the right direction. hello guys I have a 99 chevy silverado with the same issue it started about 4 days ago with a po354 and today i have replaced the spark plugs. I eventaully got a P0300 code and a solid SES light. I had a crack in the header so I needed one anyway, the new header does not have the cat. 3, has a rough idle, (kinda sounds like it has a aftermarket cam) runs good when you get it on the road but when you stop at a red light it sounds like its going to die, the truck has tru duals, straight pipes for most of its life with no cats, now the previous owner paid $400 for new cats which are on the truck now but still has no muffler, just. I keep getting a P050D code cold start/rough idle. I have tried unplugging coils 1-5 (can't get to 6 right now) individually but cannot find any change in how it is running. Hi There, There are a number of things that can cause poor fuel mileage and a rough idle. The first sign of the problem was the service engine light would blink intermittently when driving on the highway or revving the gas. Engine runs very rough when excellerating then seems to smooth out at normal driving speed. The RPMs drop to 500 and bounces to 700 for a few seconds, 5-10 maybe. Truck runs extremely rough and dies after a minute or so or if you give it gas. Chevrolet Silverado 1500 Rough Idle? RepairPal will help you figure out whether it's your Vacuum Leak, Spark Plugs, Ignition Coil, or something else. How to Fix a Random Engine Misfire in Your Car (Code P0300). This happened suddenly, the truck went from having great power and smooth idle. pdf FREE PDF DOWNLOAD NOW!!! Source #2: 2004 chevy silverado code p0300 with p0171 and rough idle. While there are a variety of reasons your Chevrolet Silverado 2500 HD has a rough idle, the most common 3 are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil. Sometimes, none of these things occur, but it still triggers the check engine light. yea its not but thanks. Deaerlship said no codes were set so nothing is wrong. How to fix a rough idle/clean, replace IAC valve and the P0300 code chuck kososky. Does it start after pouring gas in throttle and keep running fine?. I got rid of a 1999 S10 with 200,000 miles that puured like a kitten. 03 Trailblazer rough idle/hesitation Engine Tunes/Mods. Intermittent rough idle Rough idle seems to be quite popular with these things, no matter the engine. Sometimes, none of these things occur, but it still triggers the check engine light. Don't Put It Off The main reason you may need to consider changing your standard fuel cap sooner rather than later is an upcoming emissions test. I have a 1999 Chevy Silverado 1500 series, 5. The fact that you might be able to get the pintle to move does NOT mean that the EGR valve is OK. Here are some drive train specs for 1973 - 1987 Chevy trucks. We have replaced the timing chain, spark plugs, CAM sensor, distributor cap and rotorthe check engine code still reads P0301, P0300, and P0146. There is no throttle cable. its a 2000 chevy silverado 1500 LT with the 5. 3L has been giving a rough idle on cold start only, no drivability issues. They claim no codes came up therefore no issue. The truck runs fine no obvious problem. Put a new fuel filter on it and ordered a new fuel pump. No, they are ligitamate updates. Cold engine starts with no problems. I took off. The odometer should give you a code instead of mileage. 03 Trailblazer Rough Idle no codes OEM Issues. com • p0300 code : vortec 5300 5. Here are some drive train specs for 1973 - 1987 Chevy trucks. 9k mode??? and 10K mode. No amount of wind can force the pages to turn on your eBook and with anti-glare screens, its pages will never be reflecting directly into your eyes. 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. I bought my Altima about a year ago and always had a rough idle, it's not so bad now but I feel it and it just bothers me. article on this site. 1989 Rough Idle and hesitation I took my 1989 car out today and it was running normally for a couple of hours, parked and than returned to have it idle rough with major hesitation upon acceleration. I took it to the dealership and they said it was a fuel injector going bad. I have a 02 Silverado 2500hd 6. com and find specs, pricing, MPG, safety data, photos, videos, reviews and local inventory. Did all the cleanings, changed plugs, exhaust solenoid. Engine Misfire or Rough Idle on GM 4. No more rough idle. 3 L GM tech = MW question = I have a 1999 Chevy Silverado that i bought about 2 months ago. '00 rough idle, power loss, no codes Silverado you must take fuel pressure readings,,,,also a poor idle is usually a vacuum leak do you know what a PCV is and the. 95) each time before, this always seem to work, it restored curse control, brakes light,lack of power,rough shifting,and stabilizing service message, reset code and no more engine. Brakes work good but ABS doesn’t work. 3 LS engine He would have gotten a consistent mis-fire code off one coil, the random mis-fire codes are a pain. Throttle cleaning usually helps clean the valve, but if it is failing electrically, then it won't help. , Silveradosierra. 2004 chevy silverado code p0300 with p0171 and rough idle. Duramax Diesels Forum > Duramax/Diesel Technical > Duramax Hard Parts > LBZ: Rough idle?!. This pretty much solved my rough idle. Then one day it starts bucking and hesitating on take off to the point it wasn't driveable. A second "rough idle" TSB PIP3146C explains how a valve train issue can cause loss of compression for a very short time. Don't Put It Off The main reason you may need to consider changing your standard fuel cap sooner rather than later is an upcoming emissions test. I took it in to the shop for rough idle. Engine / Drivetrain Talk - Rough idle in gear only? - The new truck (02 4. Cold engine starts with no problems. 4 Vortec Rough Idle. it also seems the longer i sit the worst it gets. i drive between 100 and 200 miles a day. Top 10 Causes of a Rough Idle | JL Motorworks. The truck runs fine no obvious problem. Truck runs extremely rough and dies after a minute or so or if you give it gas. Cause: Coolant getting into the cylinders. No, they are ligitamate updates. 0 rough idle no codes keyword after analyzing the system lists the list of keywords related and the list of websites with related content, in addition you can see which keywords most interested customers on the this website. There are many problems that can result in a Chevy Silverado's failure to start, making diagnosing the trouble even more frustrating. Dirty Fuel Injector Modern vehicles are fitted with fuel injection systems, which inject fuel into the cylinders to create a mix of air and fuel to burn. Asked in Chevy Silverado, Hyundai. All FIXED 5. rough idle and hesitation once engines is hot, no codes on DIC. Dealer said they couldn't find anything wrong with it, they kept the car since Wednesday. 2 from escalade in off road car with 08 silverado 2500hd 6L e38 ecu and pedal (dbw tb is oe escalade but same part as silverado) and it won't start. I took it to the dealership and they said it was a fuel injector going bad. Deaerlship said no codes were set so nothing is wrong. Sprayed carb clean around intake manifold thinking intake manifold leak and nothing. No codes came up at all, but car runs rough. when i put it in park or nuetral it idle up but it still lopes. 9k mode??? and 10K mode. Some customers may comment on rough idle and/or stall when sitting at a stop. Research the 2011 Hyundai Sonata at cars. I think the heater code only occurs if its an open or a short. I believe i caused it, just not sure how. You will need to open the throttle valve in order to inspect all surfaces. Put in gear and it begins to rough idle at 700 to 500 rpm until the throttle is depressed. I have tried unplugging coils 1-5 (can't get to 6 right now) individually but cannot find any change in how it is running. running perfect the other day, stalled out while driving down the road coming to a red light (A/C was on). If there are misfire codes stored, you will also want to diagnose and repair those prior to diagnosing a P050D. Shows codes P0353(intermittently) & P1000 (constant, no CEL) My car has 161000 miles. Replaced the spark plug and the idle got somewhat better for a short time. Easy to use parts catalog. I am approaching 100k on the truck and had a code for the tps. I read it and it was a P0300 Random/Multiple Misfire. again no codes, what could it possibly be?. it has about 112000 miles. In fact it just throws P035* codes that way. It does also get a p0446 code not as frequently and has given a P0172 Code. 1989 Silverado 5. The truck runs rough at idle, though smoothes out as the rpm's rise. I recently bought a 2010 Silverado with the 5. I then changed the belt and idler tension pulley, still had a rough idle but slightly better. 8L engine, 30,000 miles, have same idle issue. 1996 GMC Z71 this happen all at once engine is misfiring, rough idle, loss of power, will start right up, check plugs,/replaced wth is going on with it ,also check MAP sensor and clean it check all. 2005 silverado with engine codes of 131,300, and 171 burns rich ,rough idle its been cold outside any ideas? This 2005 Chevy Silverado is due for the 150,000 mile. P0304 Rough Idle OEM Issues. The past month has been really Bad. and when I think it's swithcing from OL to CL. Easy to use parts catalog. Learn more about Chevrolet Silverado 1500 at the Edmunds. I changed the plugs and fuel filter and air cleaner. on top of that upon cold start i get a really jumpy rough idle like im pressin the gas in neutral real quick. Its not so rough of an idle like its misfiring, so no worries in at the moment. The Crux Hence, after knowing the ways to troubleshoot rough idle when warm problem, anyone can now keep a check on their vehicle’s status. Q: When I use my car it idles at 700 and then stalls when used for 5 min but there are no check engine lights. I have a 2017 6. We stopped at the top to let the dog out, I let the truck idle until egt's were down to 400. Now I have to deal with a $30k truck I've wanted for years unable to idle constant. it revs real high then back real low like it is going to cut itself off. No amount of wind can force the pages to turn on your eBook and with anti-glare screens, its pages will never be reflecting directly into your eyes. rough idle If this is your first visit, be sure to check out the FAQ by clicking the link above. Forum Home. i have a 04 chevy silverado with the 5. 2 from escalade in off road car with 08 silverado 2500hd 6L e38 ecu and pedal (dbw tb is oe escalade but same part as silverado) and it won't start. Hi! I am at the end with this truck! 1989 chev TBI 305 k1500. We offer the lowest prices on fuel caps of all shapes and sizes at AutoZone so you can restore the functionality of this part of your gas system and get back on the move again without breaking the bank. This article covers a wide variety of noises common to the hard working Chevrolet Silverado. checked all vac lines. com : Car complaints, car problems and defect information. Top 10 Causes of a Rough Idle | JL Motorworks. 4L Triton that has developed a problem noticed first in a check engine light. In fact it just throws P035* codes that way. Chevrolet/gmc: after cold starting engine and placing in gear, would have a rough idle and/lack of power, momentarily before startup a few minutes later. Hey guys, 97 prelude sh. Not throwing any codes right now. a rough idle. won't start because ecm won't give fuel. It will turn off fuel and spark on each cylinder and turn off the idle compensation. Two codes of P0440 in the past 3 weeks since the fuel pump was replaced.