Question about 1991 Geo Tracker

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Fuel I have put a new fuel pump in,But now my vehicle will not start.

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  • Geo Master
  • 20,706 Answers

Old post 1991 a 8valve engine????
it ran before? or not? if not you did the diagnosis wrong, ask?
does it crank? no, then.
if you read the fsm it said disconnect battery first.
forget to put it back?
keyon, CEL lamp glows, it must or you blew up to 3 ECU fuses.
say it cranks,
fuel pressure not 34psi but 0 or 10
you did it wrong.

http://www.fixkick.com/nostart.html

the first test for dead fuel system after proving
that is what
check output of fuel pump relay for 11 to12v cranking
if good the at pump. actual
if no power to pump all old and new pumps are useless
ask how to finish this process..

Posted on Jan 17, 2016

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Posted on Jan 02, 2017

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1 Answer

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What make , model and year vehicle ? It makes a difference . It does start but stops running right away ? Before replacing the pump and regulator did you do a fuel pressure test ? Hooking up a fuel pressure gauge ? Or just guessing that was the problem ? And did your test the electrical circuit of the fuel pump ?

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