1998 Chevrolet Truck Low Fuel Pressure

1998 CHEVROLET TRUCK
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SCOTT50
  • MEMBER
  • 2 POSTS
Hello all I have a 98 chevy 1500 truck and the fuel pump went out. I have just bought a new one but not the assembly just the pump motor. Lastnight I put it in and went to start is and it wouldnt? The fuel filter has less than 1000 miles on it and there was 3/4 tank of gas. I put a fuel pressure gauge on it and turned the key on and it only had 10 psi. I have read that they should have between 60 to 66 psi. Would it be safe to say the new pump I bought is junk? Thank you for any help Scott
Jan 10, 2006 at 11:09 AM
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2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
If they sold you just a pump then its probably for a TBI engine. The correct pump for your truck is a complete tank module
Jan 11, 2006 at 7:35 AM
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SCOTT50
  • MEMBER
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I cant figure why you need to buy th hole thing ? My fuel gauge is fine and everything else seems to be .. Thank you for your reply Scott
Jan 11, 2006 at 8:11 AM
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JASON EVANS
  • MEMBER
  • 4 POSTS
it also might be a later model chevy is known for that the pump might be an early model :o
Jan 18, 2006 at 5:59 AM
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Suggested Repair

Replace the pump-only unit with the correct complete fuel-tank module for the 1998 Chevy 1500. A pump sold by itself is likely intended for a TBI engine and is not supplying the required pressure.

Conversation Summary

The owner of a 1998 Chevy 1500 replaced only the fuel-pump motor after the original pump failed. The truck would not start, and a gauge showed about 10 psi instead of the expected 60-66 psi despite a nearly new filter and a mostly full tank. An expert said a pump-only part is probably for a TBI engine and that the correct part is a complete tank module. The owner questioned why the whole assembly was necessary when the fuel gauge and other components seemed fine. Another comment suggested a possible early- versus later-model pump mismatch.

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