Silverado Rough Idle At Start

Sometimes hard to start and emits grey smoke when started. My truck just recently started to idle rough with my A/C or defrost blower on. 6 LHU 2007 - 2009 Cadillac SRX, STS, XLR PIP4577M SES light with DTCs P0171 and P0174 - Possible air leaks L52/LL8/LLR/LK5/LLV. I got a used 2004 Silverado 1500 with a 5. This is a BIG high performance, high output engine so a tiny amount of occasional shake at idle is acceptable. Pay attention to low idle or stalling. H(took to dealer and have had tires balanced 3 times, dealer said no fix at this time, I should not be told this for paying $ 30,000 for the truck. Now, I have a really rough idle for about 10 to 15 seconds after a cold start. 3 Vortec with 105,000 miles on it. " The problem; I started noticing it at red lights or stop signs. Learn about this problem, why it occurs, and how to fix it. Look for a high engine idle. It started yesterday. My 2013 Silverado with the 5. rough idle, slow start (takes a second longer to prime the injectors). This results in a rough idle and unburned gas making it into the exhaust, creating a gasoline smell in the exhaust. They often had weak valve guides that tend to fatigue at around 100k miles causing oil to slip past briefly till the engine warms up. com, there are several reasons vehicles idle low. Signs and Symptoms of a Bad Idle Air Control Sensor by Richard Rowe Connected to the engine's primary air intake valve (the Throttle Body, or TB), the Idle Air Control (IAC) valve is responsible for making minor adjustments to engine airflow. The Chevrolet Silverado is a full-size pickup truck. Its not so rough of an idle like its misfiring, so no worries in at the moment. 08-03-11 01:03 PM - Post# 2121334 Ok the other day the wife was driving the truck and it started idling poorly and dying. 5) Adjust the idle stop screw so the engine idle speed obtains 550rpm in drive (auto trans) or 650rpm in neutral (manual trans). It will go from very low rpm's, about 500, and start studdering as if it wants to turn off then rev itself all the way up to about 3,000 rpm's. DIAGNOSE - ENGINE IDLES TOO HIGH. So I bought my truck about a month ago 105K 2005 LLY RCLB and just recently it started rpm jumping when in park or in drive at idle. Engine Clicking And Tapping Noises problem of the 2000 Chevrolet Silverado 18 Steering wheel shaking bad and light vibration in cab above 62+ m. Discussion in ' Chevy Silverado Forum (GMC Sierra) ' started by simonger89 , Aug 22, 2017. Re: white smoke and rough idle the only funny part about this is that everyone i talk to says head gasket but all along ive been saying no and nobody believes me but the bad thing is cummins 08 you described it exactly and that concerns me. But when it warms up it has a noticeable misfire and only at idle. i replaced the spark plugs and the pcv valve. Another cause of high idle could be the air intake boot which delivers air into the intake system. The engine struggles to keep it above 7-800 RPM. The cool thing is, is that you can check these items to see if indeed they are causing the rough idle/misfire or not. I have a 2011 Silverado that just went in for a throttle positioning sensor service bulletin. vehicle that may have black smoke on a cold start. Suburban: Rough Idle At Cold Start 2 Answers. Strangely, as the engine warms up, the roughness tends to go away, which seems confusing. I have replaced plugs, fuel filter, pcv valve and air filter recently during a tune up. It eventually set off the check engine light with cylinder 1 misfire and random cylinder misfire. All 8 injectors were replaced under warranty June 2016. It is nothing to cry about in my book, so I am not going to do anything about it. If the idle is low and inconsistent, it may be due to an issue with your idle control valve. If I press the gas and then let up, it will usually stop the problem except in the hottest weather. Silverado 3500HD Crew Cab DRW 2WD with gas engine. 3L and it ran good for the test drive. The engine shakes, and so does the muffler, and when i get up to at least 2000-3000 rpms, the roughness gets a little better. The ignition coil(s) and distributor supply the electrical current to the spark plugs, so that a spark can occur. A normal healthy idle air control valve will provide smooth idling in your vehicle. Bold Black accents command attention, and features like Goodyear Wrangler DuraTrac ® off-road tires let you make your own rules. The purpose of this article is to highlight some of these common problems and how to fix them, so your mighty "Five-Oh" runs just as good, if not better than it did during the Reagan/Bush Sr. Learn about this problem, why it occurs, and how to fix it. Engine Clicking And Tapping Noises problem of the 2000 Chevrolet Silverado 18 Steering wheel shaking bad and light vibration in cab above 62+ m. When driving, it has extremly low power unt. If you drive one, or see one on the road, you can easily spot a truck with injector issues. It then bogs and backfires thru the Carb and exhaust. It does this in gear also and hesitates when excelerating from a stop. 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. Even in warm, but not hot, weather, if I let the truck sit and idle in park for 10-15 minutes, it seams to get "hot" and will start the rough idle. I'm just looking to get my high idle back which is hilarious because most people on here are trying to get rid of their ridiculously high cold start idle!. Discuss 1990 TBI 5. Rough idle and low power 10 Answers. GMC Vehicle:GMC Acadia,GMC Canyon,GMC Envoy,GMC Savana 1500,GMC Savana 2500,GMC Savana 3500,GMC Sierra 1500,GMC Sierra 2500 HD,GMC Sierra 3500 HD,GMC Terrain,GMC Yukon,GMC Yukon XL 1500,GMC Yukon XL 2500,. If the rough idle / vibration concern is E1. After a few minutes , i …. It eventually set off the check engine light with cylinder 1 misfire and random cylinder misfire. To see how frequently Chevrolet Silverado 1500 problems occur, check out our car reliability stats. AutoZone gave me the following codes: "P0131" and "P0300. My issue is rough idling and very bad fuel mileage. Its a V6 4. How to fix a rough idle part 2 - Duration: Silverado hesitation fix. I've experienced the rough idle at stop lights since I bought in 2012 with 27K miles on it. the check engine light came on and started to idle rough. Another cause of high idle could be the air intake boot which delivers air into the intake system. His was so bad that he ended up trading it in after only 2 months use. 1999-2004 Chevrolet Silverado 2000-2004. 5 in the horizontal / lateral direction with Pico sensor mounted in seat track as indicated - continue with steps to reduce the amplitude (mg) of the vibration by adding spacers in key locations to reduce / eliminate ground out within the engine mounts. Read more Chevrolet reviews to learn about other models. Find 2011 Chevrolet Silverado 1500 technical service bulletins here. But if i let it idle it will misfire and the rpm's will change like its surging and it will eventually stall. 3 Start and idle the engine until coolant reaches normal operating temperature. 6L Turbo-Diesel engine. In this case, let's look at a late-model Chevrolet Silverado pick-up truck, say, a 1988 with 5. See what others are asking about their. Discuss 1990 TBI 5. Again, start the engine and compare how it is running at a stop to how it normally runs. Very common symptoms we all have at one time or another with our 5. my truck does something similar. Setting Idle on Chevy 350 TBI. I have less than 1,700 miles on my new '09 Silverado 1500 (4. When driving, it has extremly low power unt. After the first few seconds, its idles rough. 1998 Chevrolet Silverado Stalls When Hitting Brakes When i apply the brake it kills the motor on my 1998 Chevy Silverado 5. Below are the four most common. 3 throttle body clean and idle air control valve replacement. 06 Duramax in limp mode, rough idle, and won't rev over 2k, help! Ok, I have a 2006 Duramax 100% stock(no tuner/mods/etc whatsoever) with 140k miles on it. After reading dozens of forums with multiple ideas I went with the cheapest/easiest first. Home Forums > Chevy Truck Tech Forums > Chevy Silverado Forum (GMC Sierra) > 06 Silverado, rough idle at start up, grey smoke. Bought a can of throttle body cleaner and took off the throttle body (TB). When the car is warmed up, in drive, and stopped somewhere such as a stop light, it has an extremely rough idle. My 1991 Chevy Silverado starts up ok, but has a rough idle until it warms up. It started yesterday. Lights flickering at idle (engine, replacing, Chevrolet, battery) Idle is a little rough but not real bad. (Highs nearly 110 F this week) I don't actually have trouble starting it, and the idle does smooth out within 30 seconds or so. A couple days later the light went off but the issues remain. OBD Code: System: Subsystem: P050D Chevrolet - (ASE) Powertrain Vehicle Speed Control. I have a 05 chevy silverado with the 4. Look for a high engine idle. I've been getting a P050D Cold Start Rough Idle code on my 14 Silverado for a little bit now. Suburban: Rough Idle At Cold Start 2 Answers. Discussion in ' Chevy Silverado Forum (GMC Sierra) ' started by simonger89 , Aug 22, 2017. Mike is when I am in gear like at a stop light. I now have to give it gas to get it started and can then smell raw gas as if it were flooded. I'll see if I can set aside some time to tinker with the Intake Solenoid. I cleaned the injectors in my car and that helped the rough idle, but my fuel mileage went down as well after the cleaning. Started having serious issues and #7 plug started fouling, no codes. [2015 Escalade purchased August 2014] I'm wondering how many of us had this rough engine idle that shakes the whole truck? I had noticed it shortly after I purchased my Escalade, I thought maybe it was cold engine at first, but a week or so later it still had the rough idle when I was stopped at a red light. And then it stalled. After the first few seconds, its idles rough. The CEL has been on duri. When driving, it has extremly low power unt. On any start after the initial cold start in the morning, it is hard starting. I have good fuel pressure with no bleed down. My 2002 Chevy Suburban 2500 idles very rough when starting for the first time in the morning. 4L is a rough idle where we will have high idle for a few seconds when slowing or coming to a stop followed by a drop off to a very low rough idle after stopped for a few seconds sometimes even to the point of stalling out. After about a minute after starting it, it begins running really rough and rich like a cylinder isnt firing. At cold temps, under 40 degrees, I get a rough idle at start up. I have a 2011 Silverado that just went in for a throttle positioning sensor service bulletin. Now when its cold it runs really rough coughing and sputtering. Occasional white or very light blue smoke only on start up. Common reasons include vacuum leaks, carburetor problems, ignition issues, damaged power circuits and dirty fuel injectors. This is a known problem with the LB7 and GM extended the warranty on these injectors to 7 yrs/200,000 miles. 3L has been giving a rough idle on cold start only, no drivability issues. I did a test by unplugging the fuel pump relay and letting it die. Then when I put it in gear, I have to give it gas to keep it running. 4) Remove grounding of the diagnostic (ALDL) connector and start the engine. Engine Idle Is Too Low Or Stalls Dirty Throttle Body. Then you should check all the vacuum hoses - a leaking hose can cause a too-lean mixture and a rough idle. Hi There, There are a number of things that can cause poor fuel mileage and a rough idle. Affected vehicles may exhibit sporadic rough idle and/or a rattle-like noise while driving, with the check engine. If you rev it to 1000 rpm it doesnt misfire or stumble. A couple days later the light went off but the issues remain. Some older cars use a carburetor to process fuel, rather than a fuel injection system. Allow the engine to fully warm up and go into closed loop. His was so bad that he ended up trading it in after only 2 months use. pdf FREE PDF DOWNLOAD There could be some typos (or mistakes) below (html to pdf converter made them): 2004 chevy silverado code p0300 with p0171 and rough idle. What does this code mean anyway? The definition for this this P0171 code is Fuel Trim System Lean (Bank 1). Dealer said they couldn't find anything wrong with it, they kept the car since Wednesday. Its a V6 4. I think the first TSB stands a better chance to at least be a possible cause. Now, I have a really rough idle for about 10 to 15 seconds after a cold start. When the car is warmed up, in drive, and stopped somewhere such as a stop light, it has an extremely rough idle. After the first few seconds, its idles rough. 6 LHU 2007 - 2009 Cadillac SRX, STS, XLR PIP4577M SES light with DTCs P0171 and P0174 - Possible air leaks L52/LL8/LLR/LK5/LLV. 1999-2004 Chevrolet Silverado 2000-2004. It starts up fine with no rough idle then. The engine struggles to keep it above 7-800 RPM. I now have 106K miles on it. An engine that is idling too high may be caused by a faulty idle air control motor valve that has completely failed or that has simply become weak and is not functioning correctly. Silverado 2500HD Crew Cab with available Duramax 6. It started yesterday. If I press the gas and then let up, it will usually stop the problem except in the hottest weather. 3L w/ Rough Idle - Pirate4x4. When its in gear at idle (like a stop light), it struggles to stay above 500 RPM, and will occasionally stall. I've been trying to diagnose this problem for a few weeks now and I'm getting nothing. They claim no codes came up therefore no issue. models 2009-2013 express, silverado, suburban, savana, sierra. Learn about this problem, why it occurs, and how to fix it. 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. Very common symptoms we all have at one time or another with our 5. It seems to run fine but at a slightly higher idle then norm. This article applies to the Chevrolet Silverado GMT800. 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. 3 Auto - 130K miles on it. In this case, let's look at a late-model Chevrolet Silverado pick-up truck, say, a 1988 with 5. 3L Poor Idle Quality, HARD START Posted to GM Driveability on 2/9/2009 8 Replies hello, this truck will start up perfectly on the 1st start of the day,if you let it run 10-15 minutes than shut it off and let it sit for 10-15 minutes it will crank over about 6 or 7 seconds before restarting and than has a low idle. I live in Texas so the engine's not *literally* cold by any means. Re: Cold Start Rough Idle Nov 29 2018, 9:11pm yamazippy wrote: To add to the diagnosis, I let the tank run until the fuel light came on and fueled up this weekend. I am based in Australia. Rough Idle/Hard Start Alright, now more crap is going wrong with the truck. It started doing a rough idle, DD Tech - '00 Silverado 5. There are no obvious fuel leaks, so I am going to try simple things first, such as a new gas cap and fuel filter. If the rough idle / vibration concern is E1. It starts fine when cold. I drive a 2001 chevy silverado 1500 4x4 pick-up. I am based in Australia. If the rough idle occurs only under cold start conditions, a malfunctioning engine coolant temperature (ECT) sensor may be at the root of your problem. Actual rough idle is not normal. NAIOA - 2000-2005 General Impala Discussion - Rough start / idle - crank sensor? - Does anyone have any other ideas what might be causing this? - 2002 Impala LS (3800 V6) 113k miles Most of the time when I start the car, the idle is erratic for the first. Off idle means the engine isn't idling. For awhile I'd be able to avoid it coming on as long as I didn't use the remote start. I got a used 2004 Silverado 1500 with a 5. 3L and it ran good for the test drive. My 1991 Chevy Silverado starts up ok, but has a rough idle until it warms up. pdf FREE PDF DOWNLOAD There could be some typos (or mistakes) below (html to pdf converter made them): 2004 chevy silverado code p0300 with p0171 and rough idle. 2000 Silverado 4x4 5. In gear, with my foot on the brake, the idle would surge from 600-900, maybe a 2 second cycle. The purpose of this article is to highlight some of these common problems and how to fix them, so your mighty "Five-Oh" runs just as good, if not better than it did during the Reagan/Bush Sr. Average failure mileage is 1,500 miles. A couple of times it has even stalled out. 4-liter Triton V8 engines. Exterior; Daytime running lamps; Daytime running lamps; Dual auto composite halogen headlamps; Fog lamps; Heating, Ventilation & Air Conditioning; Air conditioning. 7L has been acting up for a while now. Engine drivability strategy is much different under cold start conditions. 3 liter with 122,000 miles on it. 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. It's been driving absolutely fine until this morning. I have good fuel pressure with no bleed down. After about a minute after starting it, it begins running really rough and rich like a cylinder isnt firing. The colder the weather the rougher the idle. RPM surge, rough idle, engine shake I know that there have been other posts about surging and what not but I think mine is different. SOURCE: 2003 Silverado rough idle, idles good after "check engine" light. Once stopped at a intersection it idles down to 5-600 rpm and dips down to 300 then wants to stall out. It will run normal on occasion but only lasts about 45 seconds or so. Get a different service advisor and return for another rough idle/engine stall diagnostic visit. They claim no codes came up therefore no issue. I really want to get a scanner hooked up and look at the short and long term fuel trim to see where I stand, but I don't have access to one. 2015 CHEVROLET SILVERADO Recalls (7) vehicle experience rough idle and vibration at idle in gear. If the rough idle occurs only under cold start conditions, a malfunctioning engine coolant temperature (ECT) sensor may be at the root of your problem. The engine is the 5. No trouble codes and the rough idle only lasted a few seconds. I've been trying to diagnose this problem for a few weeks now and I'm getting nothing. The engine struggles to keep it above 7-800 RPM. If I shut off the engine, then restart it, it's about a 8-10 seconds before it starts, and idles poorly. 6) Turn the ignition off. I have a 05 chevy silverado with the 4. driving down the road it does fine, never sputters or struggles, but once i stop at a light it starts the rough idle. It also idles rough aftter getting off of the hiway and having to sit a a red light. I'm just looking to get my high idle back which is hilarious because most people on here are trying to get rid of their ridiculously high cold start idle!. Rough idle smoke from exhaust 1 Answer. The symptom is a rough idle and a gasoline smell in from the exhaust. A common symptom of a faulty idle control valve can be a high idle. I drive a 2001 chevy silverado 1500 4x4 pick-up. 3 L GM tech = MW question = I have a 1999 Chevy Silverado that i bought about 2 months ago. 5) Adjust the idle stop screw so the engine idle speed obtains 550rpm in drive (auto trans) or 650rpm in neutral (manual trans). Re: Fixed Problem - Rough Idle and Bogging down I'm trying to figure out the part exactly 215k Colorado changed, I want to try this out for myself also. A couple of times it has even stalled out. The purpose of this article is to highlight some of these common problems and how to fix them, so your mighty "Five-Oh" runs just as good, if not better than it did during the Reagan/Bush Sr. The symptoms include stalling when coming to a stop, or very low idle after starting, or stalling if the throttle is "blipped" (opened and closed quickly). A rough idle will result in intense vibrations forming whenever your vehicle is stopped with the engine running. 3 liter Silverado runs rough until warmed up Make sure and test your O2 sensors to see if they have thrown any codes that are stored in the ECU, if they are not heating up correctly when you first start it, they can cause it to run rough until it is warmed up. This is a BIG high performance, high output engine so a tiny amount of occasional shake at idle is acceptable. If you have the throttle just barely open it will smooth out until it upshifts then it does it again until the rpms build. 08-03-11 01:03 PM - Post# 2121334 Ok the other day the wife was driving the truck and it started idling poorly and dying. A few weeks ago (on 8/15 to be exact), I made a post about sputtering and rough idle. This article applies to the Chevrolet Silverado GMT800. Rough Idle Solved! By ic3man5, January 24, 2016 in 2014-2018 Silverado & Sierra Troubleshooting. Strangely, as the engine warms up, the roughness tends to go away, which seems confusing. my truck does something similar. So after they changed 4 injectors and $1400 still have same problem. When the engine is started cold, regardless of the outside temperature, the idle is rough and there is a noticable power loss. Deaerlship said no codes were set so nothing is wrong. And, mine is a 96 5. To see how frequently Chevrolet Silverado 1500 problems occur, check out our car reliability stats. Had the BB Tune bump the idle up to 600 at 1000 miles and that seemed to eliminate it for the time being. Before you do anything, hit the broken bolt with some penetrating oil, and let it soak in for a few hours. When driving, it has extremly low power unt. Re: white smoke and rough idle the only funny part about this is that everyone i talk to says head gasket but all along ive been saying no and nobody believes me but the bad thing is cummins 08 you described it exactly and that concerns me. The idle speed will return to normal if any of the following conditions occur: There is brake, clutch, or throttle input from the driver. If the coil(s) or distributor fails, the spark may be too cold to ignite all of the fuel in the combustion chamber. 3L and it ran good for the test drive. A rough idle will result in intense vibrations forming whenever your vehicle is stopped with the engine running. Problem is, it's not idling rough. An engine that is idling too high may be caused by a faulty idle air control motor valve that has completely failed or that has simply become weak and is not functioning correctly. Actual rough idle is not normal. I drive a 2001 chevy silverado 1500 4x4 pick-up. There are no obvious fuel leaks, so I am going to try simple things first, such as a new gas cap and fuel filter. The problem only occurs when I shut it off with the key and start it up the next day. Find 2011 Chevrolet Silverado 1500 technical service bulletins here. Idle is most rough, when the engine is first started in the a. Re: Rough idle when truck is cold Hi. I assume this acts like a choke and needs to be closed like this. 5K now and the idle was starting to get rough again. And if you're currently experiencing this issue, I'll give you some tips on how to troubleshoot it. Rapidly fluctuating oil pressure and rough idle Well this problem has been driving me crazy, and my mechanic can't seem to figure it out either. It is lacking power for sure, and it has a very, very low idle consistently, no matter what time or what temp. In dual-pulse mode, the fuel injectors are energized twice during each injection event. 2016 rough idle Discussion in 'Engine & Drivetrain' started by Fred_e81, Nov 19, 2016. It will run normal on occasion but only lasts about 45 seconds or so. It's a typical occurance for that era motor,. The truck was running perfectly in the garage for 35 minutes, revving and idling finepulled it out to do a road test and revved a few times and blam, backfiring, won't idle. Deaerlship said no codes were set so nothing is wrong. Disconnect the battery for a few minutes, then start the Blazer with the air conditioning off, and let it idle and warm up for a least 10 minutes. 3 with 77k on it. Hi, Guest ! Save cars. I recently bought a 2008 Silverado 5. To learn more, see reviews below or submit your. Most often an input sensor has failed or the throttle body has a problem. Took it to the dealership they said that they found no. What causes a rough idle? A rough idle can be caused by many different car faults. Re: ? about battery changing and rough idle I had this happend on my 2000 Tahoe, when I swapped the battery, disconnect the Positive cable for a moment, 5 sec. I live in Texas so the engine's not *literally* cold by any means. Re: Rough idle when truck is cold Hi. Does it start after pouring gas in throttle and keep running fine?. I really want to get a scanner hooked up and look at the short and long term fuel trim to see where I stand, but I don't have access to one. 06 Duramax in limp mode, rough idle, and won't rev over 2k, help! Ok, I have a 2006 Duramax 100% stock(no tuner/mods/etc whatsoever) with 140k miles on it. I called the guy and he's an ass said "sorry, as is" and hung up. I'm just looking to get my high idle back which is hilarious because most people on here are trying to get rid of their ridiculously high cold start idle!. (Highs nearly 110 F this week) I don't actually have trouble starting it, and the idle does smooth out within 30 seconds or so. Its not! That haze is letting you know that one or more injectors are dribbling fuel into the combustion chamber. It will run normal on occasion but only lasts about 45 seconds or so. I have a 99 Silverado Z71, 5. SOURCE: 2003 Silverado rough idle, idles good after "check engine" light. From Rockauto. Could the tune have caused my truck to start idleing rough? It only does it if the the blower is on and it only seems to do it every 6 sec or so like whe. Took it to the dealership they said that they found no. Replaced: coolant temp sensor, tps, map sensor, fuel filter, and o2 sensor. Where is the erg valve located on 1997 Chevy s10? Do you mean the EGR (exhaust gas recirculation) system?. After reading dozens of forums with multiple ideas I went with the cheapest/easiest first. Originally published December 2, 2005 at 12:00 am. It eventually set off the check engine light with cylinder 1 misfire and random cylinder misfire. I have less than 1,700 miles on my new '09 Silverado 1500 (4. Dirty filter might cause rough idle, stall-out. What Causes Cars to Idle Low? According to About. 5) Adjust the idle stop screw so the engine idle speed obtains 550rpm in drive (auto trans) or 650rpm in neutral (manual trans). Also, there is a squeak that sounds like a belt when I first start the truck and sometimes continues, and sometimes doesn't (may or may not be related). A faulty camshaft position sensor is one of them. A few weeks ago (on 8/15 to be exact), I made a post about sputtering and rough idle. I have replaced plugs, fuel filter, pcv valve and air filter recently during a tune up. I'll see if I can set aside some time to tinker with the Intake Solenoid. Research the 2018 Chevrolet Silverado 1500 with our expert reviews and ratings. I really want to get a scanner hooked up and look at the short and long term fuel trim to see where I stand, but I don't have access to one. 8L), and it's starting to give me a fairly rough/jumpy idle when I give it a cold start. Another cause of high idle could be the air intake boot which delivers air into the intake system. I did a test by unplugging the fuel pump relay and letting it die. This is a BIG high performance, high output engine so a tiny amount of occasional shake at idle is acceptable. Lights flickering at idle (engine, replacing, Chevrolet, battery) Idle is a little rough but not real bad. After a total of about $1000 in repair bills the truck is finally running ok. The Chevrolet Silverado is a full-size pickup truck. I recently got my truck tuned by justin @ Blackbear performance. Re: Cold Start Rough Idle Nov 29 2018, 9:11pm yamazippy wrote: To add to the diagnosis, I let the tank run until the fuel light came on and fueled up this weekend. 3 Auto - 130K miles on it. Show example Chevrolet Silverado 1500 HD Car idle is rough Inspection prices Service A rough idling engine can be caused by a number of issues, some of them are serious while others tend to be minor, but the symptoms remain pretty much the same. It is intended to help you map out a troubleshooting plan. HIGH IDLE OPERATION. Home Forums > Chevy Truck Tech Forums > Chevy Silverado Forum (GMC Sierra) > 06 Silverado, rough idle at start up, grey smoke. as opposed to many shops that will simply start. Again, start the engine and compare how it is running at a stop to how it normally runs. Other than this everything seems to be running very smoothly. Answer: Did this just start all of a sudden? It has been sitting for about 8 months and prior to that there was no problems at all. Learn about this problem, why it occurs, and how to fix it. there are no codes to speak of. When driving, it has extremly low power unt. Ever since i bought it has had a hard time starting except for first thing in the morning. The CEL has been on duri. 3L v6 280356 miles Stalls My silverado idles extremely rough and stalls out when i press on the gas i can sometimes keep it running but barely does anyone know what it could be. This second TSB came up when I selcted your truck and engine size but it should be confirmed that it applies to your engine,I am not 100% sure. Affected vehicles may exhibit sporadic rough idle and/or a rattle-like noise while driving, with the check engine. Put in gear and it begins to rough idle at 700 to 500 rpm until the throttle is depressed. 3 silverado won't stay running rough idle. What are common reasons my Chevrolet Silverado 1500 has a rough idle? While there are a variety of reasons your Chevrolet Silverado 1500 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. Common reasons include vacuum leaks, carburetor problems, ignition issues, damaged power circuits and dirty fuel injectors. I've experienced the rough idle at stop lights since I bought in 2012 with 27K miles on it. 1999 Chevrolet Silverado 1500 5. Since then, it has become worse, and now there is the additional symptom of a STRONG fuel odor. as opposed to many shops that will simply start. i replaced the spark plugs and the pcv valve. Rough idle and low power 10 Answers. Problem with my 1999 Chevy Silverado 1500 5. 4) Remove grounding of the diagnostic (ALDL) connector and start the engine.

Silverado Rough Idle At Start