Question about 1991 Cadillac Seville
91 Sevelle is operated using an electric fuel pump that is located inside of the fuel tank. Either the pump needs to be replaced, or, you have other problems and the computer is telling the fuel pump not to turn on.
I would suggest that you test the voltage going to the pump as well as the pressure on the lines using a fuel pump tester made for a Fuel Injected Vehicle.
If you attempt to spray a small amount of carb cleaner or WD40 into the throttle body and it tries to start when you crank it, you need a new fuel pump. You can spray a small amount of gasoline into the throttle body, reinstall the intake hose & try to start, sometimes the car will run until the fumes are gone. Use caution to prevent fires due to fuel getting onto areas other than inside the iintake/throttle body. Vent until fumes are gone if you accidently spill fuel to prevent possible fire caused by backfiring.
The fuel tank has to be removed to remove the fuel pump assembly, pumps are available as OEM or aftermarket pumps alone, or complete pump assembly. It is easier for those inexperienced to replace the entire assembly.
Posted on May 15, 2010
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Posted on Jan 02, 2017
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