Joe, Just a thought and an idea. #1. Since the 02 sensor/thru the Lambda unit controls mixture by way of the F.V. #2 Then when the throttle switch is engaged it overides the 02 sensor to the lambda/ Frequency Valve to lower the pressure in the lower chamber of the fuel distributor, maby that's where the problem. When the pressure is lowered more gas is available. I have never had the problem, but a Volvo service shop if no De Lorean shop is around could analize the problem. With the right equipment. John Hervey 11004,6935,6568. www.specialTauto.com --- In dmcnews@xxxx, Joe Palatinus <jpalatinus@xxxx> wrote: > I get almost exactly 15 miles to the gallon of gass on my daily driving D.