I have a 1988 chevy celebrtity
Great car for many years.
But now engine cranks over for
about 5 seconds or so before
it fires up. (almost always when it sits overnite)
I used to hear the fuel system pressurize
when I would turn the ignition key to
the on position (but not crank it over)
Now I do not hear the Humming sound
of the fuel system pressurizing prior to starting.
Once the engine starts, the car runs fine
at idle or even at high speeds.
What part could have failed ?
Thanks for any help
If the fuel pump relay is OK, and the fuel pump still doesn't run when the
key is turned to On, either the ECM is bad, or there is some kind of wiring
problem. Probably you need to get yourself a wiring diagram and a voltmeter,
and figure out if power is getting to the relay coil when it should, and if
not, trace it back and figure out why..
Robert Hancock Saskatoon, SK, Canada
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IMHO, Robert's idea was a good one. Seeing that didn't do it for you,
try hooking a fuel pressure gauge to the rail. 40+ PSI is the norm on
these cars. Pressure should hold with key off. Let us know what the
gauge tells you.
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