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1989 Oldsmobile 98 Regency Brougham 3.8L Poor Fuel Economy
Posted to GM Driveability on 9/12/2004 7 Replies

Even thought there is no knock signal shown while scanning during operation, the knock retard jumps to 9 degrees as soon as the throttle is opened and stays there. Even though there was no knock signal we tested by isolating the sensor from the block. The reta...

7 Replies Received (View Replies)

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car Vehicle Data

1989 Oldsmobile 98 Regency Brougham

VIN 1G3CW54C1K
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / SFI
EmissionsOBD1 FED
SymptomsPoor Fuel Economy
OccursAlways
Message Closed

car Vehicle Data

1989 Oldsmobile 98 Regency Brougham

VIN 1G3CW54C1K
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / SFI
EmissionsOBD1 FED
SymptomsPoor Fuel Economy
OccursAlways