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1995 Pontiac Bonneville Question: My 95 Pontiac Bonneville Is sucking gas way too fast

 

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mjames4777, 3.8L V6 Supercharged, Saint Cloud, MN, July 28, 2011, 16:08
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It is like 3 mpg

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, July 28, 2011, 21:48
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     Master

    3 MPG is horrible. The engine coolant temperature switch may be reporting the engine is stone cold, making the computer add fuel all the time, a fuel pressure regulator may be leaking, fuel injector may be leaking, air filter restricted, perhaps a mouse has built a nest in the air filter housing restricting air into the engine. It shouldn't be hard to make improvements. 3 MPG will quickly kill the catalytic converter.

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