850R unstable fast idle, revs high drops as IAC unplugged
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850R unstable fast idle, revs high drops as IAC unplugged
Help please:
My 850R (Auto) failed the MOT as the tester was unable to maintain a "fast idle".
When the engine is running it idles at around 1100 rpm, but it is impossible to get it maintain steady revs with the accelerator pressed. It gradually rises to where you need it then carries on revving up until around 3500. If the IAC is unplugged the revs drop to around 800rpm and it is possible to increase them gradually to where you need them.
Things I have tried:
What should I do next and how?
My 850R (Auto) failed the MOT as the tester was unable to maintain a "fast idle".
When the engine is running it idles at around 1100 rpm, but it is impossible to get it maintain steady revs with the accelerator pressed. It gradually rises to where you need it then carries on revving up until around 3500. If the IAC is unplugged the revs drop to around 800rpm and it is possible to increase them gradually to where you need them.
Things I have tried:
What should I do next and how?
Thread Starter
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Junior Member
Joined: Oct 2010
Posts: 2
Likes: 0
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Royalty
Volvo 850
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Apr 11, 2008 08:43 AM
