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equality72521 equality72521 is offline
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Join Date: Jul 2006
Location: Brandon, FL
Posts: 4,840
There is a manifold pressure switch on the back of the manifold behind the recirculation valve. When .8 bar is reached this switch opens the ground circuit cutting the fuel pumps so you don't exceed .8 bar. Failure of this switch will result in a pegged boost gauge needle. It sounds like the AC circuit is interfering with this operation.
Mark 1979 930 Euro ***GONE AND DON'T MISS IT AT ALL***

"Worrying about depreciation on your car and keeping mileage down is like not ****ing your girlfriend so her next boyfriend finds her more appealing"

Last edited by equality72521; 04-21-2007 at 07:10 PM..
Old 04-21-2007, 07:07 PM
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