Old Volvo idling revs.

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Mon 10 Jan 2005 19:36
Old Volvo idling revs. - thallium81
The car: Volvo 940 TDIC auto estate 1992

The problem: Until recently the cold start idling revs.(1000rpm) would gradually decrease to normal revs as the engine warmed so that by the time the temp. gauge was off the bottom engine speed was down to normal idling (740rpm). Now though the revs remain at the higher speed until the temp. gauge reads normal operating temperature, and even then sometimes requires a blip on the accelerator for revs. to subside to normal.

The remedy: I think the problem lies with the 'cold start device' but I am ignorant as to how this thing is constructed and how it operates. Would some kind contributor to this forum enlighten me so I can decide to attempt a repair or replace the item. Assuming of course that my diagnosis is correct, 60/40 against in my opinion. I live in hopes.
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Tue 11 Jan 2005 19:22
Old Volvo idling revs. - Cliff Pope
It doesn't look as if you are going to get your answer here. I'd try volvoclub.org.uk or brickboard.com. There are lots of knowledgeable Volvo nuts there.
If your car were petrol I'd know like a shot what the problem was, but I am unfamiliar with diesel.
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Tue 11 Jan 2005 20:12
Old Volvo idling revs. - thallium81
Thank you for your reply Cliff Pope, I shall try the 'Volvo nuts' as you suggest. I'm really a Subaru nut but I use the old oil burner for rough and tumble work.
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