High idle issue

[bullet]

Found a guy on another saab forum with the exact same problem as mine, he didn't wrote if he got it fixed eventually. I sent him a PM a few days ago, so fingers crossed

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No luck with that guy as he didn't reply.

Meanwhile,

The vacuum lines, IAC and PCV valve are all in good condition and in the correct places and pointing the way they should.
There are no CEL lights on, and never were.
Yesterday, I changed the turbo bypass valve, and the two large diameter rubber hoses coming from the turbo and the ones from the IAC and disconnected the battery for half an hour.

The hissing noise is gone, but the idle issue still remains. With the engine cold it runs like a dream but as soon as it gets warmer the revs shot up to 2000 rpm.

I'll try to find a replacement coolant temp sensor and MAP sensor to see if it makes any difference...

[Shazam]

These are the worst problems. A mechanic would probably be doing the same thing (throwing money at it), but at least you are saving labor costs. Let us know if you are able to find the problem.

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Changed the map sensor and the engine temperature sensor. No change in behaviour

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Problem solved !!!!!


Rather embarrassingly, it was my fault.

There are two screws that hold a metal bracket stuck to the throttle body. That metal bracket holds the accelerator cable and the cruise control cable. I unscrewed them, not knowing that they have a certain position to be put back in. The holes for them allow a certain play and they have to be put back exactly as they were. Obviuosly, I didn't know that and in the manner that I put them togheter, the whole ensemble was tightening the accelerator cable, resulting in the high idle.

Thanks for all the ideas and opinions.

PS Now I got a whole bunch of spare parts )

[fiveiron]

Glad you got it figured out. I'm going to see if this fixes my problems. I have an occasionally high idle, and when I push the clutch in to shift, my rpms keep going up . Have thrown quite a few parts at it so far.

[bullet]

Well, you'll have to take it step by step:

Vacuum hoses, IAC valve, MAP sensor, water temperature sensor and inlet manifold sensor. Have you tried to disconnect the battery for half an hour ? If you did, did it ran fine for a couple of minutes?

[Saabster]

Does anybody know if the 2000 95 has a aic valve ? And if it does where is it , my 2000 95 idles high in park and neutral , and I can't figure it out , am thinking aic valve but I don't know if it even has one.

[Saabster]

Where is the aic valve located on a 2000 Saab 95? Does it even have one?