CHEVY cellbrity starts but won;t idle without foot on gas---okay after 3 minutes. stop motor and restart after sitting 15 minutes-- same thing all over again. runs perfect atfer 3 minute warm up

1.let car sit overnight. 2. Start engine, put A/C on high, let it idle for 20-25 minutes, 2, then drive car uninterrupted for 60mph for 10 minutes, 3. slow down to 25 mph for 4 minutes, come to a complete stop with foot on brake let it idle for 2 minutes, 4. drive again at 30 mph for 8 minutes, come to a complete stop let it idle with foot on brake for 3 minutes. 4. Drive at 40 mph (turn off overdrive) for 6 minutes. 5. Drive at 20mph for 3 minutes at a time, each time coming to a complete stop with foot on brake for 2 minutes. Do this 4 times. Let the car cool overnight and repeat entire process. Then check status of systems with a code scanner.

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My brother has a Ford F150 that does this the problem turned out to be a bad mass air sensor (little black box with plug in on it located next to the air box on the air intake pipe

put foot flat to floor DONT pump the accelerater pedal turn on ignition turn over engine as soon as it starts take foot off pedal happy motoring..

ok i have a 1998 durango with the 5.2L 318 engine. had trouble with a bad cell in my battery. I went out bought an optima red top battery for it 800cca. put it in and had same trouble. No start without putting foot on gas. wouldn't stay running without holding foot on gas. CPU has to relearn it's programming once you unplug it for long periods of time. mine was without power for about 2-3 weeks till i got new battery. Start with this.. first check under air filter make sure a squirrel hasn't made a mess under your air filter and it's clogging the air intake. Then pull off the lid to your injector cover ( the screw down lid coming from the air box ( with air filter in it) to "carb") make sure all your cables move freely. put that all back together and close hood. Start truck with foot slightly on gas pedal to get started. keep it at about 1k to 1500 rpm for about 1-2 minutes. Rev motor to about 2500rpm and let it die out if it will. Get out lock doors with key fob if you have it. if not make sure to lock doors. ( trust me it worked for me) let sit for 5 minutes. come back out and unlock door and relock door 3 times with fob ( if you have it ) or key if you don't have a fob. Then unlock it with the key and enter vehicle. Start truck as before and keep it around 1k to 1500 rpm again for about 30 seconds rev it up and should keep running. Mine did. I think the iac was stuck from sitting and has now since loosened up.
Good luck hope ti works for you.

sounds like you need to replace the temp sensor

The choke function is not working on a cold engine.
1 clean throttle body and IAC motor air pathways.
2. Check for engine codes, you are looking for a code that relatws to the wngine temperature sensor.

i had a problem like this with my jeep. ended up being a bad ground strap. try replacing or cleaning them up.

put a OBD II code reader on it see if it has stored any codes if not replace the TPS sensor and the MAF sensor do the replacements at different times so you don't buy one or the other for nothing

You don't want to start throwing money at this thing without knowing what the problem really is; Yes, it could be a module or a coil, but it probably isn't. Electronic parts don't usually suffer from idleness, fuel systems do. The first clue is that it sat for 7 months and then ran for fifteen seconds. The fix's you try first for are the cheap ones. I would suspect a fuel problem; gas doesn't like to sit around for 7 months. Does the van have a carb or is it fuel injected? Carbs can varnish up from gas sitting in them; spraying carb cleaner in and around them will often loosen things up, in a worst case it'll have to come off the motor and be rebuilt. If the gas tank was low on gas for that seven months you'll probably have a lot of condensation in it. Water doesn't burn, so that'll keep it from starting and running, a couple of cans of Heet (isopropyl achohol) will usually fix that. If there's dirt in the system, the fuel filter will probably need to be changed. If those things don't help, you'll find it much less frustrating and usually cheaper to tow it to a reputable shop. They'll fix it right the first time.

Have u tried a tranny sevice? The fluid and seal r bad it is exspanind as it heats! Try a tranny service i reccomend every 60,000 miles!