1998 Saturn Station Wagon idle issue

1998 SATURN STATION WAGON
109,000 MILES • 1.9L • 4 CYL • FWD • AUTOMATIC
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RSTEPH128
  • MEMBER
  • 1 POST
When car is warmed up.I put the car in park.It will idle for 10mins. Idle jumps to 1500 To 2000rpms. I shut the car off and it idles at 1000rpm for the same then jumps to 1500 to 2000 rpms. The car never does this in gear though.
Feb 11, 2015 at 8:21 AM
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SATURNTECH9
  • ✓Experienced Mechanic
  • 30,869 POSTS
Do you have the sw1 or sw2 model? Are your bumpers black or are they painted to match the car? I would suspect the coolant temp sensor being bad are there any codes in the computer? Also if it never happens in gear i wouldn't suspect a vacuum leak.
Feb 11, 2015 at 11:22 AM
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