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1990 Cadillac DeVille 4.5L Poor Idle Quality, Hesitation, Poor Fuel Economy
Posted to GM Driveability on 2/23/2004 3 Replies

I am getting to much fuel pressure when i turn the ignition on. There is also a fuel drop. I have replaced fuel [...], and regulator. I checked the fuel return line for restrictions and did not find any.

3 Replies Received (View Replies)

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Message Closed w/FIX

car Vehicle Data

1990 Cadillac DeVille

VIN IG6CD133XL
Engine4.5 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / mpfi
Emissionsobd1
SymptomsPoor Idle Quality, Hesitation, Poor Fuel Economy
OccursAlways
Message Closed w/FIX

car Vehicle Data

1990 Cadillac DeVille

VIN IG6CD133XL
Engine4.5 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / mpfi
Emissionsobd1
SymptomsPoor Idle Quality, Hesitation, Poor Fuel Economy
OccursAlways