Idling, throttle surging issues

Idling, throttle surging issues - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com

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Idling, throttle surging issues Posted by JMJ in NC [Email] (more from JMJ in NC) on Mon, 2 Nov 2009 07:18:45

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I've had a few issues with my 2002 9-3SE 5-door with manual transmission, 82K. Occasionally, it will have a rough idle at start-up, but it will smooth out in a few seconds.

Other times, the idle RPM will vary a bit, almost like the AC compressor is cycling on & off (which it's probably not).

On the highway (65- 75mph), it feels like the throttle is surging and backing off, even while the cruise control is on.

I'm getting close to the 90K service, so I could wait a bit longer and take it in early. Oil changed at 5k intervals with full synthetic. Major 30K and 60K services at a Saab service center. This car has been virtually problem-free since we got it in 2005 at 14k (can't say the same for my 2002 9-5 Aero SW - 32K - 90K).

I'm guessing AIC needs a cleaning, possibly fuel filter needs a change.

Feedback welcome - JMJ

posted by 66.83.106...

Posts in this Thread:

Idling, throttle surging issues, JMJ in NC, Mon, 2 Nov 2009 07:18:45 <-- Viewing This Message
- Cleaned TB, no change, JMJ in NC, Mon, 9 Nov 2009 09:06:48
- You don't have an AIC, BlaaSaab, Mon, 2 Nov 2009 12:36:57
  - Thanks - I'll check it out (n/m), JMJ in NC, Mon, 2 Nov 2009 13:36:38
- Re: Idling, throttle surging issues, Bruce, Mon, 2 Nov 2009 09:43:15
- Also, no CEL or codes through OBDII - nm, JMJ in NC, Mon, 2 Nov 2009 07:26:46

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