2012 Suburban Rough Idle

But in eco mode with no load it idles rough. Starts strong, but then idle is always rough and up and down when the engine is cold. How your engine idles is a good indicator of its overall health; addressing the problem sooner rather than later and checking all potential causes is important. Again, start the engine and compare how it is running at a stop to how it normally runs. It was the cam position sensor located on the front of the engine near the CPAS. A clogged cat will not cause the symptoms the OP is having, instead it will give poor acceleration etc. Possible cylinder head or valve damage on the GM 2. Not to say it can't happen but generally speaking the idle is rough because airflow is disrupted. Heres the thing under load its runs fine, on eco mode with choke part way on it runs fine. I have changed the plugs and Swapped that coil / wire but still get a misfire. Any tuner can and will do it. Chevrolet Cruze Owner Manual - 2012 Black plate (4,1) iv Introduction Using this Manual To quickly locate information about the vehicle, use the Index in the back of the manual. I have a ’68 383 Road Runner, I bought it as a non-running car and it had a considerable cam in it when I got it—I think it is the Purple cam with 0. 3 in my father’s S10 and a balance-shaft 4. Otherwise the valve adjustment could fix it if it's way out of spec, my motor idled very rough due to bent exhaust valves, but as you said, off idle if felt nice and smooth if not low on power. 3s from 99-05 range. Conclusions. The 2012 Chevrolet Equinox has 39 NHTSA complaints for the electrical system at 54,643 miles average. Offered up today for your internet leeching consumption is a collection of (studio) outtakes from Samhain's "Magnum Opus" album, November Coming Fire. which still had a rough. Tahoe & Suburban - 2008 burb ltz rough idle - I have a 2008 Suburban ltz. So the past couple months I've noticed my truck has a really rough idle in the mornings when it is cold out, to the point where it has even died before. When I had the top-end rebuilt in October, there was stil a rough-idle condition that the shop could not track down. I guess they forgot I previously had a 2016 Tahoe. Putin: Russian and Turkish troops will take joint control over a vast swath of formerly Kurdish-held territory in northern Syria, in a move that cements the rapid expansion of Russian influence in Syria at the expense of the United States and its Kurdish former allies. A second “rough idle” TSB PIP3146C explains how a valve train issue can cause loss of compression for a very short time. Find Air Intake Parts For Sale Online. I've heard people (not me) refer to the Comp XE268 cam as having a fairly smooth idle. I have a 2016 Hyundai Tucson 1. I have read nearly every thread on tbi surging idle, code 44's (lean o2), and everything in between. 150k miles on the truck. Any suggestions or ideas of what's going on? Thanks in advance for any feedback. The first place where I bought it from Bigelow Chevy in Ohio said it is normal for. Re: Fluctuating idle/Fluctuating voltage 01-03-05 07:19 PM - Post# 590567 In response to backup sounds to me like it could be the all to troublesome positive battery side post, if you guys have the original ac delco battery I would definatly check the positive battery terminal to see if it has any type of corrosion or possible leakage they are notoriuos for leaking or even busting the seal. Heres the thing under load its runs fine, on eco mode with choke part way on it runs fine. Special Deals for the Ranger. It's generally located on the throttle body and in the case of my 2000 Dodge Ram 5. I took it to the dealer and the took the carb off cleaned it and still same problem. Danger, Warnings, and Cautions Warning messages found on vehicle. I have a 2001 Chevy Suburban 2500, 2WD w/ 6. It did however idle rough at times and almost stall then the idle would jump to about 1k-1200 rpm. I have a 2005 Nissan Sentra with 74,000 miles on it, and it has had trouble starting for 2 or 3 years. will the ECU/IAC "learn" over many weeks, or will in never re-adjust, until you do what you are saying to do The problem I have, after the car warms up, you can hear, and see on the tach, it doing a periodic "bounce" down from 900 rpm, or whatever it's supossed to be idling at all the time when warm. It is because rough idle when warm can either be caused by one faulty component or through series of problems. com! 2015 tahoe woes P050D cold start / rough idle Also including Oldsmobile, Geo, Hummer, and Saturn (North American brands). I’ve had a rough idle problem with the Chevy 350 engine in the van and haven’t been able to solve the problem for over a year now. Also please check out the statistics and reliability analysis of Chevrolet Sonic based on all problems reported for the So. The GMC Yukon Denali is a full-size SUV. While there are a variety of reasons your Chevrolet Suburban 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. Offered up today for your internet leeching consumption is a collection of (studio) outtakes from Samhain's "Magnum Opus" album, November Coming Fire. Today out ran fine for about 15 mins and decided to start running rough while in idle and also running a bit rough while going 2600rpm. How your engine idles is a good indicator of its overall health; addressing the problem sooner rather than later and checking all potential causes is important. If you let off the gas it dies. Data-driven analysis of used cars for sale, and specifically the market for Chevrolet Suburban 2500 models. This sounds as if you have a low idle condition. The LT on both the Tahoe and Suburban gets standard heated seats, and a new All-Star Edition includes heated power mirrors, polished wheels, heavy-duty trailering and chrome trim. It might take a day or two of driving in traffic before the engine will settle down again. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not. Roof carriers may have been attached with the wrong retaining nuts, resulting in holes or tears in the roof rail air bags if they deploy. Fuel Pressure Reg? 2012 #2. Rough idle can be a gray area, and sometimes the root of the problem isn't the engine itself, but the. Harsh Shift and Rough Idle Conditions A harsh shift and rough idle may be felt on some 2014-2017 Corvette, Silverado, Sierra; 2015-2017 Escalade, Suburban, Tahoe, Yukon; 2016-2017 CTS-V, and Camaro models. Although my opinion (supported by others too) is that the idle speed needs to be re-learned, the system should still be capable of maintaining an idle speed. - Answered by a verified Chevy Mechanic. for the last month and a half I have experienced rough idle. ' To answer your question, rough idle in eco mode is a known issue with this engine and manufacturer (not all owners report this problem, mind you). but now ever since it. So far as the rough idle goes, (I cant say about the speedo) I'm going to hazard a guess you have a problem with the Idle Air Control Valve or some call it Idle Air Motor. Top It could certainly make your idle rough or at least add to it. Order Now!. Slight Rough Idle. Order Now!. I have a 95 Park Avenue, not the supercharged one, it's my wifes daily driver. After the first few seconds, its idles rough. Special Deals for the Ranger. Chevrolet Sonic owners have reported 9 problems related to car stall (under the engine and engine cooling category). which still had a rough. I have a 2016 Hyundai Tucson 1. and that they could do something to fix a rough idle. The cause is often a problem in the idle air control system. Idle is rough and low power (for a Q that is). seemed to have fixed it or at least made it better. Either way this is without taking the FPR into account, I was measuring at the inlet, fuel line disconnected and plugged into a pressure gauge (dont have the materials to make. " If turning the ignition on causes IAC to engage plunger fully forward, then there is no purpose in doing what he is suggesting. While there are a variety of reasons your Chevrolet Suburban 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. 7mm Platinum Twin-Tip Technology. That's why I "used to " go to them. On cars with carburetors (phased out through the 1980s), the most common problems include the distributor cap and rotor. After riding a while in the 90+ degree heat, then stopping the bike for a few minutes, a startup produces a rough idle around 1000rpm, occasionally dipping below that level. My 2012 shakes as did my 1997 5. They did the sensor rebuild kit repair. com! 2015 tahoe woes P050D cold start / rough idle Also including Oldsmobile, Geo, Hummer, and Saturn (North American brands). We treat our customers like family before and after every sale. i have no trouble codes or check engine light. also hiccup when the throttle suddenly changes position. It may hesitate under load, surge, idle rough or run excessively rich or lean. Engine Stalls, Misfire Code, & Cylinder Misfire The engine may be stalling because it isn’t getting enough throttle opening. I have a 5-speed Tremec TKO 600 in the car. turns out i had the iac on backwards. In this video, we're going to show you how to replace the idle air control valve on this 1996 Chevy Tahoe. The items you'll need for this are a new idle air control valve from 1AAuto. During driving everything is fine. News: We need your help to 1989 R2500 Suburban mild 350 TBI 700r4 10. 3s, but did not see the problem in the 5. When it started, I would turn the key and the car would almost, but not quite, start, and simply turning it off and t…. Thought I had bad gas, never did it before just in morning on cold thirty degree nights, morning start ups, engine would start, high idle at 1000 rpm, then idle down to 700 or 600. After that it’s not a rough motor, it’s better than the 4. Hi everyone, i bough in 2011 a 2010 sierra 4x4 5,3l brand new, at 8000km i reported a rough idle ( almost undetectable) looking at the water in. You're right to assume that something else going on. Just in case it's lack of power causing it cleaning the MAF and FI service would be a good idea, as idling the engine it's already weak and any power reduction can cause a issue. Note: An additive can sometimes, however, cause a rough idle problem. By the time I left my driveway, the car wouldn't idle at all. Get reliability information for the 2012 Kia Sorento from Consumer Reports, which combines extensive survey data and expert technical knowledge. It has the 4 cyl engine with automatic transmission. The IMRC flaps weren't opening correctly. Truck running rough, took it to chevy garage, I spent $1500. iATN Review Newsletter. Again, start the engine and compare how it is running at a stop to how it normally runs. The LT on both the Tahoe and Suburban gets standard heated seats, and a new All-Star Edition includes heated power mirrors, polished wheels, heavy-duty trailering and chrome trim. will the ECU/IAC "learn" over many weeks, or will in never re-adjust, until you do what you are saying to do The problem I have, after the car warms up, you can hear, and see on the tach, it doing a periodic "bounce" down from 900 rpm, or whatever it's supossed to be idling at all the time when warm. Post by Yoshi » Wed Aug 31, 2011. A Suburban 1500 4WD is rated to tow up to 8,000 pounds. ↳ Chevy Suburban ↳ Chevy Trailblazer. What do you think it is? This happens in park neutral and in gear. You're right to assume that something else going on. If engine rpm is higher than expected, by 200 rpm or more, the ECU will set DTC P0507 – Idle Control System RPM Higher than Expected in memory. Fuel Pressure Reg? 2012 #2. Read expert reviews from the sources you trust and articles from around the web on the 2012 Chevrolet Silverado 1500. Idle in non-eco is 'silk smooth. Chevrolet Cruze Owner Manual - 2012 Black plate (4,1) iv Introduction Using this Manual To quickly locate information about the vehicle, use the Index in the back of the manual. 3s, but did not see the problem in the 5. My 2002 Chevy Suburban 2500 idles very rough when starting for the first time in the morning. No engine light on, changed fuel filter and it got alittle better it would idle ok but when useing throddle have to pump to keep up rpm but would hold about 3500rpm steady for 5-6 seconds before having to pump pedal, I have owned my suburban for 11 years with no problem any thoughts on problem. Replied by JS on topic Misfires, Rough Idle, Burnt Oil Smell Not fun Not fun Without being there to have a look on my own I still say my first "guess" is a huge mess in the intake, and hopefully that's all it is. Request a dealer quote or view used cars at MSN Autos. Even if your vehicle is being serviced by the manufacturing dealer it is still great practice to be educated on what is going on with your car. Normally it depends on what kind of car you are driving, and what temperature outside is. The best part is, our Chevrolet Equinox Idle Air Control Valve Connector products start from as little as $21. in/2012/01/1999-ford-f-150-idles-rough-and-quits. Suburban: Rough Idle At Cold Start 2 Answers. Page 3: Rough Idle After Replacing 'Spider' Injector or Fuel Pressure Regulator. com we strive to provide a quick and easy way to help consumers and other field professionals get all the information needed to diagnose engine light concerns. 3s from 99-05 range. Your car should continuously stay at RPM of 500-1000. I too have brand new 2012 Chev Suburban with rough idle. It did however idle rough at times and almost stall then the idle would jump to about 1k-1200 rpm. Run the engine until it reaches normal operating temperature. Chevrolet 2003 Suburban - On 3-8-14 at about 10:00 AM I was less than a mile from home when I was approaching a two way stop sign traveling at about. My Avalanche is a 2008 (31,000 miles) and about 3-4 days ago, I noticed a rough idle. 2012 (Edited) 1999 GMC Suburban k1500, 5. I only use eco mode on the highway once I've reached cruising speed; I've noticed NO discernible difference in mileage with eco on or off for suburban (daily) driving. ↳ Chevy Suburban ↳ Chevy Trailblazer. New Motorbike One Piece Motorcycle Genuine Cowhide Leather Racing Suit Ce Armou For Sale Online. It was even lower when I bought it, sometimes as low as 300 rpm. so the truck runs and drives just fine, but at an idle it jumps up about 200 rpm every 5-10 secconds. New Motorbike One Piece Motorcycle Genuine Cowhide Leather Racing Suit Ce Armou For Sale Online. NOTE: Vacuum readings will vary according to the altitude in different localities. After riding a while in the 90+ degree heat, then stopping the bike for a few minutes, a startup produces a rough idle around 1000rpm, occasionally dipping below that level. If any of these is lacking, the engine may stall. adjustable track available for purchase today on the internet. Follow these steps to complete an Idle Relearn: With vehicle at a complete stop, set the parking brake. That's why I "used to " go to them. When the engine is started cold, regardless of the outside temperature, the idle is rough and there is a noticable power loss. 86k miles is that helps I do not have a check engine light, never gave one either It has an issue where it idles rough when cold, then when the engine is warm it has a dropping idle. Truck Trend Garage: 2012 Chevrolet Silverado 1500 Rough Idle Rough Around the Edges. Idle in non-eco is 'silk smooth. Home › Forum › GMC › 2015 Yukon Denali rough idle issue and general frustration. 2012-09-20 Description Nissan is recalling certain model year 2012 Frontier, Pathfinder, and Xterra two-wheel drive vehicles manufactured from June 19, 2012, through July 12, 2012. com and a T20 Torx bit and ratchet with an extension. What is making my car idle rough when i turn on the air condition?my car idles good when its not on. 3s from 99-05 range. 10 w/ 33s 87 C30 454 TBI Rough Idle and almost stalls out if you stand on it. Late 2012 would do it once in awhile and in 2013 was worse. What do you catigorize as a rough idle? I have a very similar issue. It will stay at about 1200 rpm when I. Check engine light and trouble code P0300 misfire. Rough idle can be a gray area, and sometimes the root of the problem isn't the engine itself, but the. [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. The PCM doesn't like it and lights up the check engine light (CEL). It may also Run rough when warm, slight knock, no codes setting. Harsh Shift and Rough Idle Conditions A harsh shift and rough idle may be felt on some 2014-2017 Corvette, Silverado, Sierra; 2015-2017 Escalade, Suburban, Tahoe, Yukon; 2016-2017 CTS-V, and Camaro models. I have a 2005 H2 SUT with 200,000 miles and over the past couple of months, I have noticed that there is slight hesitation on acceleration and the idle is very rough once the engine is hot or has been running for more than 30 mins. My 2012 shakes as did my 1997 5. 97 Suburban with a 411 swap that has been nothing but problems. If you shop at Amazon. Hello i recently purchased a brand new honda eu2000 inverter generator from a honda dealer. A rough idle or misfire may be noticed on some 2014-2017 Encore, 2011-2015 Cruze, 2016 Cruze Limited, 2012-2017 Sonic and 2013-2017 Trax models equipped with the 1. I went to auto zone to see if it was a misfire but the scanner returned P0014 which could have been multiple things but the guy at the counter said most common is the cam position sensor. It will idle fine around 700 RPM then randomly drop to 500 and it gets rough, then catches itself and idles. My car has an automatic transmission. After a couple weeks I noticed that at idle the engine would stumble and my rpms would drop slightly. I have a 2011 Silverado that just went in for a throttle positioning sensor service bulletin. When it starts idles really rough, and when i put it in gear it dies unless its completely warmed up, check engine light and vtm-4 are on and blinking it says all my cylinders are misfiring, also its smells like antifreeze pretty bad, I need help. On cars with carburetors (phased out through the 1980s), the most common problems include the distributor cap and rotor. When the air control valve for Chevy Silverado is clogged, it likely to lead to an instant, irregular deceleration as you lift your foot off the pedal, causing a backfire through the tailpipe and loading up the engine with surplus fuel. I have a 5-speed Tremec TKO 600 in the car. Has started off this winter bad. , MN (2012 Kia Sorento Unsure 2. Rough Idle Was Always Present and What I Replaced did Not Solve the Issue. for the last month and a half I have experienced rough idle. If required, set the idle adjustment on the carbuetor so that the engine idles smoothly. Add mine to the list, it idles rough once its warmed up. I let it run for a bit longer and seemed to run a bit better but still idling rough. Possible cylinder head or valve damage on the GM 2. If the EGR valve is stuck open or can't seat because of carbon buildup under the valve, it will allow too much exhaust to be sucked back into the intake manifold. This may be a sign of a failing idle air control valve. iATN Review Newsletter. 3 and have a rough idle. I have a 95 Park Avenue, not the supercharged one, it's my wifes daily driver. One thing that has changed is the miss is random at idle and also under 2500 rpm. Sometimes, the computer can tell you what is wrong [instructions]. The vibration analyzer should be used twice: 1st to determine the customer concern is a rough/harsh/stiff ride and 2nd after the repairs to verify the cause is repaired and to identify if other inputs / disturbances are present. The truck has a rough idle we scanned it because the CEL has been on for misfires in cylinder 2. The high idle in drive and park is tough on the engine and murder (in drive) on the already fragile transmission, not to mention the brutal effect it has on U-joints when you shift into drive at. as far as reliability that is good but idles poorly. Here are some: Stalls at idle, stalls when I put the clutch in, stalls when I turn a corner, misfires, surges, no power, cuts out, no power at top revs, runs rough, etc. Advance Auto Parts has 4 different Idle Air Parts for your vehicle, ready for shipping or in-store pick up. Cold stalling problems are the most common because the engine needs a richer fuel mixture to maintain idle speed until it warms up. The motor is out of an 88 1 ton pickup and is in a 89 1/2 ton suburban. driving down the road it does fine, never sputters or struggles, but once i stop at a light it starts the rough idle. Dealer confirms it exists but offers no solution, I am taking them the car the third time about it today- anyone else run into this, or got a fix for it?:confused:. My 2012 shakes as did my 1997 5. 2002 Ford Ranger runs rough at idle but no OBS code? My 2002 Ranger runs rough at idle. Starts strong, but then idle is always rough and up and down when the engine is cold. I have a 5-speed Tremec TKO 600 in the car. but now ever since it. 4L 4-cylinder engine (RPO […] October 3, 2016 —. It's best done if there is a noticable problem, hard starting, rough idle, performance decline, misfire and/or injector balance test indicates injector deposits. How your engine idles is a good indicator of its overall health; addressing the problem sooner rather than later and checking all potential causes is important. which still had a rough. i drive between 100 and 200 miles a day. seemed to have fixed it or at least made it better. All engines are E85-compatible, which means they will run on 85-percent ethanol fuel, and all have Active Fuel Management (AFM) which switches off half the cylinders when the additional power or idle smoothness isn't needed. It will idle up a little, and then drag down so low that I think it is about to die. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. Hopefully someone else has experienced this problem. It's the same part and process on these Tahoes from 1996 to 2000. I have achevy 2500hd that use to idle at about450 -500 rpm and would stall sometimes now after I tuned it up plugs and wires it stalls worse runs strong no missing can't cross wires Was told possible throttle body unit goes and causes low rpm. To see how frequently 2012 Chevrolet Equinox problems occur, check out our car reliability stats. The mix is loud, unbalanced, and awesome. 2000 Outback rough idle, trouble starting after fueling. Oh yeah I have a 2002 Pontiac Grand Am 2. Cold stalling problems are the most common because the engine needs a richer fuel mixture to maintain idle speed until it warms up. I can't speak to the other problems, but my 2012 had all 4 tires and 2 wheels that were "out of round", out of GM spec. Re: Fluctuating idle/Fluctuating voltage 01-03-05 07:19 PM - Post# 590567 In response to backup sounds to me like it could be the all to troublesome positive battery side post, if you guys have the original ac delco battery I would definatly check the positive battery terminal to see if it has any type of corrosion or possible leakage they are notoriuos for leaking or even busting the seal. Shop safely with us online or call 888-844-3393 and buy the quality part your car or truck needs today. Midwestern Councel C Prepared class champion 2012 North Suburban Sports Car Club C Prepared class champion 2012 M20 rough idle. Driving near my home in suburban Boston—not exactly Tea Party territory—I saw a car sporting a Celtic and much of that money is sitting idle today. Thanks for the quick reply. but now ever since it. I also tried some techron in case it was the injector. The Suburban is essentially the Tahoe's longer-wheelbase bigger brother. It runs great at startup, cold, but after about 30 minutes, idles rough. As the other's have said before, the early i5's had this issue. My 2012 shakes as did my 1997 5. Also please check out the statistics and reliability analysis of Chevrolet Sonic based on all problems reported for the So. 9L TD, F1s, NV5600 6-speed in a '93 GMC Suburban. Shop Chevrolet Suburban vehicles for sale in Denver, CO at Cars. It almost sounds like it is cammed because it has a slight lope to it. Chevrolet Cruze Owner Manual - 2012 Black plate (4,1) iv Introduction Using this Manual To quickly locate information about the vehicle, use the Index in the back of the manual. A few days ago I figured out that the EGR was stuck open so I disabled it in the tune and blocked it off by putting a piece of aluminum can between 2 gaskets and reinstalling the valve. What does this code mean anyway? The definition for this this P0171 code is Fuel Trim System Lean (Bank 1). 97 Suburban with a 411 swap that has been nothing but problems. Although my opinion (supported by others too) is that the idle speed needs to be re-learned, the system should still be capable of maintaining an idle speed. Post by Yoshi » Wed Aug 31, 2011. it also seems the longer i sit the worst it gets. The throttle cable is binding and causing the throttle plate to not fully. It will stay at about 1200 rpm when I. My 2012 chevy cruze has a rough idle. The truck has a rough idle we scanned it because the CEL has been on for misfires in cylinder 2. It will eventually learn it on its own, but it may take over a week of driving, during which time you will experience high and low idle speeds and possibly rough idle. It will go from very low rpm's, about 500, and start studdering as if it wants to turn off then rev it. can crappy gas cause rough idle? If this is your first visit, be sure to check out the FAQ by clicking the link above. I also tried some techron in case it was the injector. 5" 14bolt 4. My car has an automatic transmission. 8L Rough Idle? within the Firebird / WS6 forums, part of the Vehicle Specific category; Ok so here's my issue, hopefully one of you can help me. The LT on both the Tahoe and Suburban gets standard heated seats, and a new All-Star Edition includes heated power mirrors, polished wheels, heavy-duty trailering and chrome trim. com! 2015 tahoe woes P050D cold start / rough idle Also including Oldsmobile, Geo, Hummer, and Saturn (North American brands). Cold stalling problems are the most common because the engine needs a richer fuel mixture to maintain idle speed until it warms up. 4mm Iridium and 0. looking for Cadillac 429 rough idle cam. A high idle on any vehicle less than 30 years old is probably due to an incorrect sensor reading (like throttle position sensor). Re: 97 suburban runs rough Sign In Steve; Once you've checked fuel pressures, as Tom suggested and would've been my first test, give us vacuum readings at idle and cruise. com (for anything), use this link to support OBD-Codes. After you replace the computer chip, it will automatically reset itself when you turn the ignition key from the "on" position to the "off" position. I also sprayed carb cleaner around the intake and I did not hear an idle change. Anyways, I found a leaky air hose connection between the manifold and the MAF, once I corrected it, the engine idle smoothed out and now we have heat as designed at idle. It did however idle rough at times and almost stall then the idle would jump to about 1k-1200 rpm. models 2009-2013 express, silverado, suburban, savana, sierra. Request a dealer quote or view used cars at MSN Autos. The best part is, our Chevrolet R2500 Suburban Idle Air Parts products start from as little as $49. A high idle on any vehicle less than 30 years old is probably due to an incorrect sensor reading (like throttle position sensor). I pulled the TB (drive by wire) off and cleaned it really well and it bumped up to about 600-700 for a while but now it's back to 500. Can't find the right GMC Idle Control Valve? AutoPartsWarehouse has the largest online selection of parts in the market at affordable rates. P0300 Diagnostic Trouble Code Discussion for October 2012 Multiple Misfire Detected * Note: This is a professional automotive technician's resource. If required, set the idle adjustment on the carbuetor so that the engine idles smoothly. This can make the engine idle rough, misfire and/or stall. The idle air control valve is a component that interacts. Anyone else deal with this before. Page 2- GM letter - rough idle V8 Engine & Drivetrain. White smoke and/or coolant odor may come from the exhaust for an extended period of time at cold start as well. My car has an automatic transmission. I have brought it in twice under warranty. GM has issued a service bulletin #12-06-01-001 to address a check engine light on (service engine soon light on), a P0300 trouble code and a rough running engine on the vehicles listed below. Not to say it can't happen but generally speaking the idle is rough because airflow is disrupted. They told me thats just how they run. The idle air intake ensures your Silverado maintains a consistent idle, even when it powers vehicle functions. Especially when I am at a stop sign or stop light and depressing the brake. Re: 1988 350 TBI idles funny, stalls when put in gear, and accels rough I rebuilt the FPR with the Autozone kit, which included a new spring and used the new spring. Problem solved! The key was to finally locate the source of OBDII code PO 0171, left bank lean, which I realize was not part of my original question. 00 they told me everything but how to fix it. 1498 Technical Service Bulletins have been issued for the 2012 Chevrolet Suburban. Welcome to the club! They all have a rough idle. Re: 97 suburban runs rough Sign In Steve; Once you've checked fuel pressures, as Tom suggested and would've been my first test, give us vacuum readings at idle and cruise. When it comes to your Chevrolet Equinox, you want parts and products from only trusted brands. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not. chevy forum at Car Dealer Forums; Truck runs great, but recently when the engine comes off the enriching circuit. Unexplained lope at idle. ↳ Chevy Suburban ↳ Chevy Trailblazer. Order your Idle Air Control Valve - 1AISC00030 today at 1AAuto. I have brought it in twice under warranty. Mechanic's Assistant: Is the rough idle intermittent or consistent?. News: We need your help to 1989 R2500 Suburban mild 350 TBI 700r4 10. mine idles a little rough and has since day one no matter what has been replaced on it, etc. It has 175,000 miles on it,1000 miles on intake gasket job, hoped that would the fix rough idle. I took it to the Chevy dealer I used to go to and they gave me the runaround, and told me the rough idle was normal for that vehicle. Accord shakes when idle with AC on, Honda and Acura, 1 replies Car shakes a bit when A/C is turned on, Automotive, 3 replies 02 Elantra shakes at low speed (15-30 mph), Hyundai and Kia, 10 replies front end shakes, Automotive, 13 replies Test drove a 2000 S-10 and it shudders and shakes, Automotive, 15 replies. 0 Vortec with a PO300 random misfire/rough idle issue. As the other's have said before, the early i5's had this issue. as far as reliability that is good but idles poorly. After you replace the computer chip, it will automatically reset itself when you turn the ignition key from the "on" position to the "off" position. I have a 2016 Hyundai Tucson 1. The 2012 Chevrolet Equinox has 39 NHTSA complaints for the electrical system at 54,643 miles average. 2011 Chevy suburban, rough idle when car in gear at 500 rpm, changed plugs, wires, new air filter cleaned throttle body - Answered by a verified Chevy Mechanic. com we strive to provide a quick and easy way to help consumers and other field professionals get all the information needed to diagnose engine light concerns. it's. It will go from very low rpm's, about 500, and start studdering as if it wants to turn off then rev it.