1997 chevrolet lumina not pumping gas from the gas tank
Replace fuel pump is the answer given by those who don't really know anything or just want to sell pumps. Too many peole just replace there pumps only to find it doesn't solve the problem. You have to diagnose the problem. This could be bad fual pump relay, open in fuel pump circuit, ground problem in fuel pump circuit. Check voltage at connector near fual tank. low voltage here indicates a possible wire or relay problem. Check resistance to chassis ground from ground pin at connector supplying ground to pump. Any resitance over .3 ohms indicates a ground problem. Check resistance across the pump motor, infinite (open) resitance indicates a bad pump. normal pump resistance is usually in the range of 2 to 4 ohms or so (Check manufacturers specs to get your pump motors resistance). If you do pull pump, check operation by putting 12 volts (correct polarity) across the original pump before buying replacement. If you hear (or feel) pump run, problem may be somewhere else (not pump). With a little well thought out diagnistics, you should be able to quickly pinpoint the real problem, even when it just looks like a fule pump problem.
Nov 07, 2009 |
1997 Chevrolet Lumina