does tank need replaced

Asked by May 25, 2015 at 05:50 PM about the 1990 GMC Sierra

Question type: Maintenance & Repair

my pickup shuts down when gas under  quarter tank has to sit for five minutes more or
less acts if no gas present prior to the wait ,can pump excelarator some times a short
start but cuts back off .....

2 Answers

6,775

possibly a restricted fuel filter or a weak pump, need check the fuel pressure at the throttle body

77,845

It is possible that the fuel pump is overheating cause, anything under a 1/4 tank the pump is no longer covered by fuel so it has lost some cooling ability, add on some age and the pump is worn and runs warmer than it normally would. I would recommend replacing the fuel pump assembly and the filters, then do not let the fuel level drop below a 1/4 tank, that way the fuel pump will always be covered by fuel so it can maintain it's cool.

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