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Doing about 40 to 60 mph it revs at about2000rph take my foot off and revs drop rapid to about 1000rpm also when standing it surges whe idleing what could be problem

2002 S80 Volvo before buying it only did about 200 miles in 1 year and stood for long periods

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It could very well be the vacuum hoses. If not, check the idling linkage . Also, if it has set for along time, I would change the gas filter and air filter.

Posted on Apr 19, 2017

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Vacuum leak. Check all rubber hoses and joints. Make sure none are cracked or rotten from sitting.

Posted on Apr 19, 2017

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