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S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
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Revs rising & falling at idle - never happened beforeViews : 977 Replies : 15Users Viewing This Thread : |
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Jun 17th, 2019, 10:30 | #11 |
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Last Online: Feb 4th, 2021 14:56
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Location: london
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S40 revs up and down at idel
Just a FYI - I have a S40 X reg auto petrol.
I had revs going up and down at idle - I could feel it through the steering wheel. On investigation I found one of my vacuum hoses had come disconnected from the air filter (- goodness knows how as its well supported/connected) - shoved it back in and hey presto - back to normal running. Im just saying its worth checking your vac hoses first before starting to dismantle things. Mine was the one from the rear of the air filter. |
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