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1995 Saturn SW1 Idle too high

Tiny
MARCYW
  • MEMBER
  • 1995 SATURN SW1
  • 4 CYL
  • 2WD
  • MANUAL
  • 196 MILES
I have a 95 Saturn SS1 Wagon with 195,000 on it and have kept it to a tee!

All of a sudden it is idling high especially when I clutch to put the brake on. Goes to 2,000- 3,000 rpms and when it sits at just normal idle, it idles at 1-1/2. Just too high.

Any ideas? Thanks.

Marcy Wood
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Friday, January 29th, 2010 AT 5:36 AM

2 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
If idle is normally 800-900 rpm and it is idleing at say 1200, it would be a malfunction in the IAC (idle air control valve) or circuit.

But an idle of 3,000rpm is either a vacuum leak or possibly a binding throttle plate.

Was there an abnormal event that caused this, like a backfire or something?
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Friday, January 29th, 2010 AT 5:48 AM
Tiny
MARCYW
  • MEMBER
  • 4 POSTS
There was not a backfire but it did start to happen after a possible overfill of oil. Not a drastic overfill, just a bit. Thanks Marcy
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Friday, January 29th, 2010 AT 7:35 AM

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