Question about 1998 Saturn SC

1 Answer

1998 Saturn SC2 has been frequently stalling out.

How do I replace the idle air valve?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

First remove the throttle body. Then locate the Idle Air Control Valve and the 2 TAMPER-PROOF TORX screws that attach it. Soak with WD-40 (or equivalent) and use the correct size TAMPER-PROOF TORX bit on your ratchet and remove the screws (make sure not to drop them--they are NOT magnetic). Mind the large O-ring that seals the IAC to the throttle body; don't damage it because you will need it for the new IAC* (* if you don't buy GM replacement parts). While you have the IAC out, spray the **** out of the throttle body and clean the throttle plate with carb spray, a rag, and a old toothbrush(I'm serious--EVERY GOOD MECHANIC HAS ONE). This will break up the carbon and gunk collected over the years and mileage. Once you have a nice, clean, DRY throttle body (*dry is important because carb spray will expand the O-ring on the IAC and it will split or break the seal--which causes poor idle*) lube the O-ring with some White-Lithium grease (spray some on your finger tip and apply) and firmly press the new IAC into place and reinstall the screws. Reinstall the throttlebody and reconnect the hoses and wires. Crank the vehicle and let idle for at least 10 minutes so that the computer can relearn the new IAC positioning. (this is because the old, faulty IAC was sending poor signal to the computer and the new one must be seen to take orders from the computer)
HOPE THIS DOES THE TRICK, SINCE YOU DID NOT ASK HOW TO DIAGNOSE THE PROBLEM.
Mr. Goodwrench

Posted on Feb 01, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Does My Fuelpump need replaced? my 95 saturn sc2 has an idle that kicks up high then down low enough to almost die and recently has died but starts right back up this has happened since replacing the idle...


Nope it is an idle airspeed issue or an EGR valve issue. What was the reason that you replaced the Idle Air motor? Did you use the control number that is listed on the original one?

Feb 06, 2013 | Cars & Trucks

1 Answer

1993 saturn sc2 wile driving car shuts off like you turned off key then it is hard to restart


could be faulty fuel pump or stopped up fuel filter.if you are getting fuel,the idle air control valve stop working, or you have faulty crankshaft sensor and a camshaft sensor,need to code scan vechicle first to see what sensor is faulty.

Apr 03, 2011 | 1993 Saturn SC2

1 Answer

1993 Saturn sc2 stutters and backfires accerlerating


Check to see it th chain guides are worn. this can cause a retarded or advance on timing. Also do a compression check if you can, this will show that the valves are opening and closing on time. Run some injection cleaner through it first as a sticky injector could also be an issue.

Aug 02, 2009 | 1993 Saturn SC2

1 Answer

I have a 2006 Saturn Ion, the code P0506 was displayed on the code reader with the message Low idle speed. Please help, I don't know what that is, or how I should go about fixing it.


The engine idle speed is controlled by the computer through the Idle Air Control (IAC) valve mounted on the throttle body. The valve may be faulty. Hope this helps and best wishes.

Jul 24, 2009 | 1993 Saturn SC2

4 Answers

98 Saturn SL2 - Stalling issues


I had a problem with starts on my 98 sc2, did it twice only, but it would start up, shake a bit then shut down like it wasn't getting fuel, or a wrong mixture. Replaced the coolant temperature sensor and starts / idles like new now... goodluck

Jun 22, 2009 | 1998 Saturn SL

6 Answers

1999 Saturn


I had this same problem on a different car. It was the idle air control valve. I replaced it and the problem was gone. Hope this helps

Oct 22, 2008 | 1993 Saturn SC2

Not finding what you are looking for?
1998 Saturn SC Logo

Related Topics:

243 people viewed this question

Ask a Question

Usually answered in minutes!

Top Saturn Experts

yadayada
yadayada

Level 3 Expert

61249 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Saturn Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...