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Reduced Fuel Efficiency 1994 940 Station Wagon

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
1983 - 1992 740
1982 - 1991 760
1986 - 1991 780
1990 - 1998 940
1990 - 1998 960
1997 - 1998 V90/S90
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RAAKEVIN

Reduced Fuel Efficiency 1994 940 Station Wagon

Post by RAAKEVIN »

I had someone replace both of my fuel pumps and the regulator recently with after market parts from Advance Auto Parts and the car is running fantastic (better than ever). I even replaced the plugs and wires but whereas I was getting about 360 miles on a tank of gas I am now getting about 240 miles and the fuel pressure is perfect. What could be causing this increased loss of fuel efficiency? :(
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