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Mend Volvo 850

engines reves hesitates?

My 1994 Volvo 850 automatic will hesitate and engine reves upon acceleration then idle reduces and runs smoothly. What could cause this?

Steve
March 2008
Most likely to be the fuel pump. Fix by replacing.

ShadenFreude
February 2009
you may need a new foo foo valve.

mr magoo
June 2008

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