Mechanics

CHEVY WILL NOT START NO FUEL AT FUEL RAIL, FU

2000 Chevrolet Suburban

Engine Performance problem
2000 Chevy Suburban V8 Four Wheel Drive Automatic 160000 miles

changed fuel pump and filter
replaced old style sender unit as per recall
to new style I have checked fuel pump relay
and all fuses are good
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Lori McGarry
May 27, 2008.




Check the fuel pressure and comeback with the readings-fuel pump might not be producing fuel pressure that will cause the fuel rail not to have fuel-
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Tiny
Rasmataz
May 28, 2008.
Good morning
thank you for your help.
Yes we checked the fuel press, nothing at the
schrader valve. I now dropped the tank again
and checked voltage at the connectors, pump
and sender unit both have 0 volts. Removed the top
half of the fuel/relay box and checked connections
and for signs of coarosion all look good. I did see
next to the fuel pump relay a small recpt marked
Prime. Will the aid in trouble shooting. Next
I will pull the relay and run batt voltage through
the grey wire and check voltage at the pump
connector so I can rule out a damaged or burned
wire. I have questions re: the security system
is it possible that I am in some type of anti theft mode dissabling the fuel pump.
Thank you again for your help.
If you have any idea what I should check next
please reply
thank you Lori

Tiny
Lori McGarry
May 31, 2008.
I will pull the relay and run batt voltage through
the grey wire and check voltage at the pump
connector so I can rule out a damaged or burned
wire. When you did this -did the fuel pump turn On?

Could be the ATD device

Have you check the ECM B fuse 20amp-see below


http://www.2carpros.com/forum/automotive_pictures/12900_relay_9.jpg


Tiny
Rasmataz
May 31, 2008.

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