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Is there an accessory fuse for the fuel pump besides relay and it is a 1989

(1990 Chevrolet Caprice)
in Springboro, OH on January 18, 2014
1989 caprise classic 5.0 E carberated
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Popular Answer
on April 15, 2014
The prof. is correct but......your question is probably not. Are you getting sporadic or absent fuel pump activation? Check continuity from the oil pressure switch (located above oil filter under engine) back to the harness connector behind rear bumper. This should be a SOLID beige wire as the beige w/ white stripe is from the relay. IMPORTANT!!! Before you go replacing parts (i.e. fuel filter/pump, relays, sending units) check for moisture damage. The caprice classic is notorious for leaking trunks. WATER KILLS ELECTRICAL HARNESS CONNECTORS! In the case of the caprice, two design flaws combine to cause many problems. If your trunk leaks it is usually the rear window trim - silicone seal across the entire bottom. Remove the driver's side inner wall trim in the trunk and inspect/clean/seal the harness connector. You will notice it is not weatherproof (flaw #2), and might have to be replaced/bypassed. A good mechanic is a good investigator and all the fancy tools in the world won't tell you the CAUSE of the problem is really just a bad electrical connection.
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of G. T. Service Center on January 18, 2014
It's an inline fuse 20 amp usually on the firewall engine compartment, this system uses the oil pressure switch to maintain power to the fuel pump. This is not carbureted, it is a 2 injector throttle body fuel injected.
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