Question about 2000 Volvo S40

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Revving the tank was almost empty so i filled it up and now the revs are going crazy. it wil only go 25mph and the brake wont work effictively. When in neutral the revs go up very high atomaticly. please advice. thanks paul

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Could be a bad throttle position sensor.. try this... follow the air inlet to your intake... on the side you should see a cable going around a curved bracket... on the side of that (your throttle body) should be either a black or a grey sensor... kinda looks like a P shape... with your car off... unplug it... start your car and see if it idles better.... i wouldn't advise driving it unplugged if it works... it just stops bad information from going to your computer and while unplugged your CPU runs off base programs... if your idle smooths out then simply replace your TPS :D

Posted on Sep 17, 2008

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