Question about Saturn SL

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1997 Saturn SL-1 idles fast

After changing battery, 1997 Saturn SL-1 idles at 2,500 RPM

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  • 15 Answers

The ECM maybe stuck, disconnect the battery and wait 5 mins then reconnect.

Other things that normal cause high rpm at idle:

  • PCV hose to throttle body has a leak
  • vacuum line to brake has a leak.
  • the throttle plate maybe dirty and is open partly
  • the IAC is bad. Which is on the throttle body.
  • the throttle plate sensor is bad, just unplug it and see if the rpm goes down. If it does, replace the sensor.
  • the egr value maybe stuck
  • bad front o2 sensor
  • bad coolant senor. You should have this replace since the original sensor where plastic tip and crack. The new ones has a brass tip. the transmission and air( IAT) have the same sensor part.

Posted on Jun 04, 2014

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Posted on Jan 02, 2017

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  • 20 Answers

SOURCE: 1997 SATURN SL 4 DR.. HIGH IDEL DURING AND BETWEEN SHIFTS

Pull the engine coolant temp sensor, I know it sounds funny but do it if your looking at the engine it is located on the right side of the head.. chances are the ceramic tip on the sensor is cracked.. 15 dollar fix or so should take away from the high idle.. let me know how it works

Posted on Jan 16, 2009

  • 1 Answer

SOURCE: 2001 Saturn SL No. 1 Cylinder Mis-fire

Solved my problem: After more internet searching and consulting with my mechanic we determined it was the intake manifold gasket folding over into the #1 cylinder. This is common on Saturn engines. The gasket folds over leaving a leak in the vacuum system which causes the car to run lean. Check for a leak by spraying carburator cleaner around the #1 cylinder intake and you will hear the idle change if there is a leak. I had gasket replaced for $450 and car runs like new. My car is a 2000 saturn SL 1 with 60000 miles on it. Hope this helps someone.

Posted on Mar 18, 2009

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  • 77 Answers

SOURCE: Saturn SL 2002 High Idle

Intake manifold gasket. Leaking where intake meets head.

Posted on May 07, 2009

  • 186 Answers

SOURCE: solution for 1998 saturn sl

Hello DTC P0341 & P0133 very common saturn Codes.You need to check condition of Plugs & wires,If not New Replace All Plugs & Wires,also I would replace the #1#4 Coil for the P0341.For the P0133 Reaplce your front O2 sensor with an OEM sensor,not an aftermarket.

Posted on May 11, 2009

  • 68 Answers

SOURCE: 1997 Saturn SL: Replaced battery & alternator,

how long is it before battery goes dead ???? check your trunck light ...i had a problem like that .and found out the trunk light was staying on so i removed it the problem was solved

Posted on Mar 20, 2010

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1 Answer

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When you first crank my Saturn SL1 it idles at 3000 rpm then drops down to 2000 rpm.I've changed the idle sensor & the throdle sensor but it does the same thing. joetaravella@aol.com


that is because the reason the vehicle is idling so high is because there is a vaccum leak somewhere and it is sucking in cold air

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I have a 2002 Saturn SL also. I bought it


check the throttle position sensor and adjust idle control.

Oct 02, 2009 | 2002 Saturn Sl

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Saturn SL 2002 High Idle


Intake manifold gasket. Leaking where intake meets head.

May 07, 2009 | 2002 Saturn Sl

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2001 Saturn SL No. 1 Cylinder Mis-fire


Solved my problem: After more internet searching and consulting with my mechanic we determined it was the intake manifold gasket folding over into the #1 cylinder. This is common on Saturn engines. The gasket folds over leaving a leak in the vacuum system which causes the car to run lean. Check for a leak by spraying carburator cleaner around the #1 cylinder intake and you will hear the idle change if there is a leak. I had gasket replaced for $450 and car runs like new. My car is a 2000 saturn SL 1 with 60000 miles on it. Hope this helps someone.

Dec 30, 2008 | 2001 Saturn S-Series

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