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1998 Pontiac Sunfire Rough idle, check engine & ets lig

Tiny
STEVENPONTIAC
  • MEMBER
  • 1998 PONTIAC SUNFIRE
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 171,000 MILES
Hi, I have a 98 sunfire GT which I changed the air filter and drive belt on yesterday. Started it up ran great, went to start it later on that evening and it idled very rough and started chugging. I gave it a bit of gas for just a few seconds and once I let off it held the higher rpm on its own for maybe 5 seconds then drop down to normal idle rpm and the check engine light came on as well as the ETS light. I had to drive only a short distance to get the car home but during the drive the transmission was shifting a lot harder then normal. Any help would be greatly appreciated. Thank you!
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Friday, April 2nd, 2010 AT 12:42 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,164 POSTS
If the check engine light came on, there will be a trouble code stored in the computer. Have it scanned to identify where the problem is coming from. Most will do it for free. I can't say for sure, but my first guess is that the MAF sensor came disconnected when you replaced the air filter. Check it out and let me know what you find.

Joe
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Wednesday, April 28th, 2010 AT 1:46 PM

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