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1991 Cadillac DeVille 4.9L Poor Fuel Economy
Posted to GM Driveability on 10/18/1999

customer came in with a hard cold start problem. found fuel pressure regulator was bad-allowing fuel to drain down overnight. ever since regulator was replaced he says his fuel economy has droppod from @19 to @16. this car has had new injectors and a tune-...

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Message Closed w/FIX

car Vehicle Data

1991 Cadillac DeVille

VIN 1G6CD53B6M
Engine4.9 L / 8 cyl
SymptomsPoor Fuel Economy
OccursAlways
Message Closed w/FIX

car Vehicle Data

1991 Cadillac DeVille

VIN 1G6CD53B6M
Engine4.9 L / 8 cyl
SymptomsPoor Fuel Economy
OccursAlways