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Chevy Suburban/Tahoe Rough Idle and Stalling

198 messages,  Last post on Feb 14, 2013 at 5:02 PM

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What is this discussion about? Chevrolet Suburban, Chevrolet Tahoe, Chevrolet Silverado 2500, Engine, SUV

    

Messages Page 2 of 21

#6 of 198 Re: 01 Chevy Suburban rough idle/stahling [navalavi8or] by gmlorraine

Mar 12, 2007 (8:02 am)

Replying to: navalavi8or (Jan 23, 2007 10:02 am)
I have a 2001 Chevy Suburban. It sounds like the same problems I was having. I replaced my intake manifold gasket it had cracks. Have it checked out for vacuum leaks. They can smoke the engine for leaks. The gasket is made of rubber. So when it is cold it contracts to normal. Which creates a vacuum leak. When the truck is warmed or hot the gasket expands. Have it checked for vacuum leaks in the morning after the truck has sat. don't test for vacuum leaks when car is hot. hope this works

#8 of 198 Engine dies when backing up or scootching forward by plaser

Mar 12, 2007 (1:31 am)

I've had this 1989 GMC Suburban for a couple of years. The engine was relplaced right after we bought the vehicle.The only parts that were not replaced by new parts were the distibuter,ignition modules or anything else on the throttle body. If I am not in gear I can lightly press on the accellerator(ACC) and it won't try to stall but if I put it in gear and try to do the same, like if I'm backing out of a stall or trying scootch foward a little it will try to die out. I have to throttle the accellerator peddle a little to keep it from dying. It started about a year ago and really hasn't gotten worse. Also if I was driving for like 40 minutes or so and I came to a stop on the freeway or something it would try to die out again and I would again throttle the ACC. After I did a really good tune up the stalling on the freeway deal went away but I'm still having issues. The truck doesn't give me any other issues, runs great otherwise and purrs like a kitten when idling. A couple mechanics couldn't find any codes and both said the timing was correct. Like I said it only does it when in gear. Any help would be greatly appreciated. At the very least a suggestion on where to start to replace something.I am also noticing when I try to start the truck it takes a little longer than it used to,it needs more turn over time then it starts up. Before I could just hit the ignition and it would fire right up, kinda like I lose fuel pressure in the line.

#10 of 198 93 Suburban Stalling at lights by fryall4

Mar 22, 2007 (11:35 am)

I have a 93 Chevy Suburban 4X4. 5.7, AT, A/C, all power. Problem is after warm up and stopping at a light the truck will stall. It starts up quickly and runs perfectly off idle. I have replaced the fuel filter, Idle air control valve, plugs, cap nd rotor with no solution. I have been researching and think the problem may be the Torque Converter Clutch lock up solenoid (TCC). There is a way to test this, but I don't know how. I don't have the $ to take it in, I just dropped $1400 on a blown up rear end. Does anyone else know how to test this solenoid on a 4L60E? Or maybe what the problem might be? Fry-

#12 of 198 '02 Suburban 1500 Rough Idle When Cold by burblover

Apr 11, 2007 (9:09 am)

I have an '02 Surburban that has a rough idle on cold start. Typically, the temps have to be 40 degrees or below for this to occur. It never happens during the warm spring, summer and fall months. I replaced the fuel filter last fall and was told at that time by the local dealer that my burb has a flex-fuel motor and that this was a bit rare for this year model. At times, the check engine light will activate during the rough idle. Sometimes the light flashes and goes off after a half hour or so, and sometimes it will come on and stay on for as much as a day or two. The burb always runs fine after warming up, even if the light stays on. I have attempted to have the code pulled when the check engine light comes on, but the last two times, nothing shows up. Anyone have advice for me? The truck runs great 85% of the time.

#13 of 198 Stalls after starting and misses by ksmock

Apr 17, 2007 (7:33 pm)

I have a 1997 sub with a 7.4 liter and the check engine light is on. Every time I start the engine it shuts off unless I rev the engine. If I try to just rev the engine once after starting the engine will continue to miss or shut i off until it gets cleared out. Somtimes the engine will even sputter right after I start driving. I have hooked up a scanner and it gave me 3 differnt possibilties mass air flow, pcv valve, or leaking fuel injectors. I have replaced the PCV vale. But before I go any farther and buy parts I dont need does anyone have an idea what is wrong?
PS
After the engine clears out the thing runs great but my gas millage is horrible.

#14 of 198 99 chevy tahoe: Stalling at stops or whenever at idle by angielacy

Aug 13, 2007 (7:16 am)

Replying to: fryall4 (Mar 22, 2007 11:35 am)
 I have a 99 tahoe it is stalling when i come to a stop or at an idle, and sometimes when i am driving down the road it will not take any gas for a minute then it will go. The main confusion is it only does this when the temp outside is 85 degrees or higher. When it is cooler out it runs like a brand new truck!!! I have replaced the IAC valve, plugs and wires, cap and rotor button. none of these has made a bit of difference. ANY HELP would be greatly appreciated.

#15 of 198 Stalling while coming to a stop or idling by bc13

Aug 24, 2007 (6:52 am)

I was having the same problem with my 2000 suburban. Had a tune-up but that did not correct the problem (needed the tune-up anyway, so no loss there). The solution (atleast for now) was reflashing (??? or reprograming?) the ECM (computer). It seems to have corrected the problem and its running pretty well now.

Messages Page 2 of 21

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