2001 chev express. Installed new t-stat, now it will not stay running. It will start just fine, but after 1 or 2 seconds, it will die. See detailed question for more information

I would need more information to give you a good answer. I need to know how long will it stay running a few seconds an hour what is it. I had a 2000 blazer that would start fine everyday and i would 10 minutes and it died sometimes i drove an hour and it died. I parked it and everytime i started it would run about 10-15 minutes and die. after it would die i would check fuel pressure which was good and spark. Well turns out there's no spark so i changed coil ,plugs, wires, rotor. I finally changed the crankshaft positioning sensor and that tuned out to be the problem so good luck.

Any codes?

CAR NO START PROBLEMS:-----

It can be the issue with weak battery or faulty battery or if battery is ok,then its faulty starter causing the issue.

From start to end troubleshooting these problem i suggest you to click the link below and follow its procedure:-----

What to Do When Car Turns Over But Won't Start?

http://technoanswers.blogspot.com/2012/11/what-to-do-when-car-turns-over-but-wont.html

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Car starting issues?

http://technoanswers.blogspot.in/2012/02/car-starting-issues.html

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Car Starting Problems

http://whoisbyme.blogspot.in/2012/06/car-starting-problems.html

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1991 Toyota Trecel: Engine Starts fine but dies when gets Warm?

http://whatisbyme.blogspot.in/2012/05/1991-toyota-trecel-engine-starts-fine.html

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1994 Toyota Pickup: Starts fine but dies in few seconds?

http://howtobyme.blogspot.in/2012/05/1994-toyota-pickup-starts-fine-but-dies.html

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1999 Chrysler Cirrus: 8 IGN Fuel Starter Fuse Blows?

http://whatisbyme.blogspot.in/2012/06/1999-chrysler-cirrus-8-ign-fuel-starter.html

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2001 Toyota Camry: No start After replacing Battery?

http://whatisbyme.blogspot.in/2012/05/2001-toyota-camry-no-start-after.html

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1989 Toyota Pickup Truck: Turns over but not start? http://whatisbyme.blogspot.in/2012/05/1989-toyota-pickup-truck-turns-over-but.html

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Car dead and will not Start? http://whatisbyme.blogspot.in/2012/05/car-dead-and-will-not-start.html

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1995 Lexus LS400: Running Hot?

http://whatisbyme.blogspot.in/2012/05/1995-lexus-ls400-running-hot.html

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2001 Toyota Prius will not start? http://whatisbyme.blogspot.in/2012/05/2001-toyota-prius-will-not-start.html

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1996 Jeep Grand Cherokee: Engine will not start? http://repairhelpcenter.blogspot.in/2012/06/1996-jeep-grand-cherokee-engine-will.html ------------- Mitsubishi will not start

http://www.howtorepairguide.com

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These will help.

Thanks.

you didn't say if it was hot on the temp gauge? no matter, it sounds like you have a stuck t-stat. when the engine is cold, a mechanical valve keeps the water from coming out of the engine block until warmed up, then opens and lts the cooler water in. this cools down the engine and the colder temp of the water shuts the valve again. this happens constantly while the engine runs, and if your t-stat is stuck, the engine heats up the water in the block, but with nowhere to go, simply overheats the motor. a good repair book will locate the thermostat housing for you and should you the repair procedure. (i assume you have checked the water in the rad. low water will give you same symptoms). good luck.

Sounds like the fuel supply through is inadequate. That is a Want-to-be fuel injection system that uses a relay to enrichen the gas mixture.

Solution could be a container of fuel system cleaner, and a spray or two of carb cleaner in the injector.

Other causes could be:
Failure of the "choke" to richen the gas mixture
Vacuum line leakage.
Fuel filter becoming clogged

it needs a new bcm,body control module,thats why everything is freaking out and the car is not starting,must go to dealer say $400

Does it start and die after 1-2 seconds or just cranks and never fires? Did it run before you installed the computer or are you trying to cure a no start problem?

It sounds like a bad fuel pump.

hi i have a 1997 chevy tahoe that starts but won't stay running i have changed fuel pump, fuel filter,relay ,spark plugs, and just changed rotor and dis. cap ready need some help to figure this out please.

Have you Checked the Fuel Filter????