2001 Pontiac Sunfire Car will not start when is is hot

Tiny
LAMONT2010
  • MEMBER
  • 2001 PONTIAC SUNFIRE
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 124,000 MILES
I have replaced the Engine, transmission, Fuel Pump, Fuel Filter, Fuel Relay and injectors, When Driving the car it runs fine with no problems when you stop the car and turn it off why is it that you have to wait 20 mins for the car to start again? Seems like the car is too hot for some odd reason and it has to cool before the car will start again, the check engine light is now lite! Not sure of what else I need to check. Everything is new even o2 sensor. Could someone shed some light on possible causes or the car is going to be driving off a cliff. Lol
Sunday, September 6th, 2009 AT 7:58 AM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
When the problem occurs, have a helper crank the vehicle, while you check for spark at the plugs. If you have the 2.2 litre engine, you can pull a plug wire, stick known good plug in the boot, ground metal part of plug to metal part of engine, watch for spark at tip of plug as engine is being cranked. If you have good spark everywhere, use a gage and check fuel pressure.

If you have the 2.4 checking spark is a little more awkward, can still be done. The autostore sells a cheap spark tester.
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Sunday, September 6th, 2009 AT 11:15 AM

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