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Pontiac Sunfire Transmission Problems



  • I have a 2005 Pontiac Sunfire with a 4 speed automatic transmission and a 2.2l ecotec. The car is used for 1/3 mile dirt track racing. I'm having a very big problem I burnt up a tranny at the begining of the season and changed it. Now the car runs fine during the heat races and shifts fine (i put the tranny in second not in drive) however when i race the feature after about 10 laps the car stops shifting it feels as though the car is slipping. But if you let the car cool off and start it later it will shift just fine. One other thing is that the speedometer goes off when this happens. I've tried a new computer and also unplugging the gauge cluster I don't know what to do anymore.
  • sounds alot of you are are experiencing catalytic converter problems
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