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Idle problems
Posted by Vlad (more from Vlad) on Sat, 21 Sep 2002 17:27:56
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Hello everyone,
Let me give you the follow up on my previous post from last week about idle drop problem. Original post is a way down now so here is a link if interested.
http://www.saabnet.com/tsn/bb/9000/index.html?bID=130677
First of all, big thanks to Ari. Your post was very helpful to understand how it works. Finally today I got a chance to spend some time in troubleshooting. What I got is that Oxygen sensor gives the same voltage: 0.57 - 0.58V no matter what. Whenever engine idles with no load or has loaded with A/C, cooling fan, headlights or even while in process of idle drop.
Idle is newer raising only drops down and when almost stall slowly comes back to normal. Another thing is on the cold start idle drop is almost unnoticeable, but getting worst when engine gets hot. At the same time as engine gets hot 'check engine' light goes off and then disappears on a high speeds. Probably after Oxygen sensor cools down by incoming airflow.
After all this seems like nothing left to do but change Oxygen sensor or I’m wrong somewhere?
I did double check electrical connectors, especially earth points, vacuum lines. IACV is clean. On board voltage is 13.45V and accurate on many points, even on the Oxygen sensor.
Thanks,
Vlad
posted by 149.99.11...
Posts in this Thread:
- Idle problems, Vlad, Sat, 21 Sep 2002 17:27:56 <-- Viewing This Message
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