fuel pump continuously running

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1995 chevrolet suburban k2500 v8-7.4L-the fuel pump is continuously running-have check fuses/relay-with relay pulled out vehicle still runs, battery dead over night,check lines there are no leaks. what else can I do and what is making the pump to continue to run all the time?

justme1 in Rawlins WY

Sep 4, 2010

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What are the best Chevrolet repair shops?

RepairPal Certified shops can diagnose and repair your 1995 Chevrolet K2500 Suburban. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

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fuel pump continuously running

What is your question?

justme1 in Rawlins WY

Sep 4, 2010

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Visitoron Sep 30, 2010

the oil pressure sensor on the engine has an additional wire/contact set that is used to switch power to the fuel pump if the relay for the fuel pump fails. These can fail and cause the fuel pump to run all of the time EVEN IF THE IGNITION IS OFF thus running the battery down. Get a new oil pressure switch (OEM part from Chevrolet - not a a cheap part from China-these are known to go bad quick) and replace this switch. Check the RELAY for the fuel pump to make sure that it is working.

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Popular Answer

What are the best Chevrolet repair shops?

RepairPal Certified shops can diagnose and repair your 1995 Chevrolet K2500 Suburban. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.