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SAAB 93 high revs idle

Tiny
ASTILLI
  • MEMBER
  • 1998 SAAB 9-3
  • 4 CYL
  • MANUAL
  • 160,000 MILES
Saab9-3 1998. Idle revs slowly build from 1000 to 2000 within 10 seconds of starting cold. When warm it is staying at 2000. New idle control valve and I have cleaned plugs and changed oil. Any ideas where else I can look?
Saturday, June 11th, 2011 AT 5:01 PM

3 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
You have any computer trouble codes?I would also look to make sure the throttle body plate is closing fully and clean not carboned up. Also I would check for a vacuum leak.
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Saturday, June 11th, 2011 AT 11:51 PM
Tiny
ASTILLI
  • MEMBER
  • 2 POSTS
Hi
There is no computer codes at all. I have today cleaned the throttle plate and house as there was a lot of build up, I have also checked all air inlets and outports and having no joy. Think it's time I took it to a garage?
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Monday, June 13th, 2011 AT 4:51 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Thats up to you if you want to take it to a garage. The best way to check for vacuum leaks is to get some carb spray and spray around the intake gasket all the vacuum hoses and the connections anywhere vacuum travels or is present. If the rpms go up down or the engine stumbles or dies while your spraying you found your leak.
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Monday, June 13th, 2011 AT 5:55 PM

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