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Posted on Sep 18, 2017
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2000 pontiac sunfire trac off and check engine light both come on and than car stops when i crack it again it cracks right up and lights are not on for a couple of days. i have had fuel pump thermostat and fan replaced and now some is telling me that the problem might be a cracked head gasket please help i have akready spent over 1500 dollars in the last 4 weeks.

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Rj Right

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  • Expert 157 Answers
  • Posted on Dec 17, 2017
Rj Right
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Check the wiring harness near the ECM for corroded wires and or lumps in the wires. I believe the ECM is located under the front passenger fender on this model and is exposed to the elements so will cause problems. You may have to remove the front part of the inner plastic fender to access it or go from underneath. Some newer models the ECM is attached to the top of the engine.

2 Related Answers

Anonymous

  • 56 Answers
  • Posted on Jul 14, 2009

SOURCE: All Engine Gaskets leaking oil. Suspect Brake

Well If you did happen to get Brake fluid in your Engine some how. The gaskets you would need would be the valve cover gasket, head gasket,Header gasket, Waterpump gasked, Front and rear main seals,and Thermostat gasket.

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Steve Jensen

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  • Posted on Jan 21, 2012

SOURCE: I recently got my fuel pump changed in my pontiac sunfire now my trac off light comes on and also my check engine light when both these lights come on the car cuts off and than cranks right back up.

does your cars heater still put out heat or does your car run any hotter than usual? Also check your coolant level do you have to keep adding fluid or is it low now? Check your oil to see if it is a milky off white looking. All signs of a head leak. Low fluid could mean other things so if thats the only sign u have get a compression test to check for sure. Hope I could help.

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