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I got this car for my daughter about 8 months ago,it rode and drove fine for 3 months, when she got it home that night ,it wouldn't start again. I checked plugs,which seemed alright,went through connections,nothing loose/broken.1 month later it started right up and idled fine.drove it about 10 blocks and it stalled in the middle of the street,pushed it to the side,tried starting it,but it wouldn't,came back to it bout half hour later and it started right up and I drove it home,checked codes,got only default. the car doesn't need a key to start it/turn it over.Is there a relation here? could the ignition switch connection vibrate loose and cause stall? What steps should I take to find problem?
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This problem
is commonly caused by a dirty automatic idle speed control valve and
throttle valve. Buy a can of throttle valve cleaner (do not use
carburetor spray cleaner!) from NAPA or Carquest (made by CRC
chemicals) and spray it into the air intake while the engine is
running, use up about 1/2 the can, engine will try to stall hold the
speed up, shut it down and let it soak for 30 minutes, restart and
blow out the remaining fluid, shut it down and disconnect the
negative battery cable for 5 Min's to reset the base idle control
Sounds like you have one of two problems. either a clogged fuel filter( the easy one), or a fuel pump problem. The fuel pump problem could be as simple as a blown fuse, bad wire connection, or it could be a bad pump.
Hope this helps.
the pcm may have a cracked board, i had an 88 cavalier z24 with the same problem, replced the ecu and it ran fine, the problem is that the boards inside the pcm crack and lose connection, the next time it acts up open the glove box and try tapping on the pcm, if the car responds at all, the pcm is bad
if u put a bulb across the contacts thhe bulb will light when cranked to show there is power there thr it on each 1 , if no light then there is no power or signal to the injectors
change the saffty nutrol switch i take it front wheel drive if so right where the tran line up u will see a plug on the tran either 5 or 7 wire some time or or less wire
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