Question about 1999 Chevrolet Suburban

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It seems like fuel problems. i got fuel coming to the top and its good pressure..engine start for about 4 or 5 sec and die ???helpcould it be the regulator?I have installed new

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If you place a fuel gauge at the service port on the fuel rail, you'll see if the initial pressure holds or drops, I had the same problem but my pump stayed on for 5 to 10 min. then quit.

Since you've changed the fuel filter, replace the Fuel Pump Relay, and if problem continues, replace FUEL PUMP.

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Posted on Jul 30, 2010

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The real test is to use a fuel pressure tester. It sounds like the fuel pump is making the initial prime but failing to build pressure. This could be a bad fuel pump or it possible that you have a bad fuel pump relay.
I would test the fuel pressure on the fuel rail first, if you have consistant pressure generally above 25PSI, (check MFG. spec..) then I would consider checking the regulator. If you lose pressure just after the start up then try replacing or swapping the fuel relay and see if this corrects it. If not then chances are your going to have to replace the pump.

Posted on Jul 30, 2010


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