1991 Chevy Cavalier engine stalls

Tiny
2CARPROS-ARCHIVES
  • MEMBER
  • 1991 CHEVROLET CAVALIER
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
1991 Chevy Cavalier mileage: lots. Car starts and runs fine in cold weather, but after driving for about five minutes, the engine stalls. It will crank but will not restart until the engine is cold again. Possible solutions greatly appreciated. Thanks very much.
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Friday, November 19th, 2010 AT 11:45 PM

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Tiny
2CARPROS-ARCHIVES
  • MEMBER
When your car is cold, the computer is in open loop. As you engine warms up, the computer switches over to closed loop. In open loop, the computer has a set value for each of the sensors. In closed loop, it reads the sensors and makes adjustments. Obviously when your car is in closed loop one or several sensors are not working properly. An independent auto service center can scan your computer for fault or error codes. The information should pinpoint the malfunctioning components.
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Friday, November 19th, 2010 AT 11:47 PM
Tiny
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  • MEMBER
Do below:

http://www.2carpros.com/articles/car-cranks-but-wont-start

Next time it refuses to start don't wait for it to make up its mind-do below immediately to determine if its fuel or spark problem

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if so, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,cap and rotor,distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing
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Friday, November 19th, 2010 AT 11:48 PM

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