Question about 2002 Chevrolet Blazer

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Fuel pump not engaging

I can usually hear a small sound when I begin to start my car that indicates my fuel pump kicking on. That sound is absent and my car will turn over, but not start. I have had a problem in the past with this, but it was the wires going into my fuel pump over the gas tank, not being installed properly. After the wires were repaired, my car started fine for a few weeks and now the fuel pump is not working again. I have checked the wires and the relay and they both seem to be operating correctly. Also, my fuel pump is just under a year old. Please advise. Thank You!!

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  • 2,427 Answers

Did you check the fuse for it ??

if the wires and relay are good that's the second part of the circuit..the first part is the one that triggers the relay from the ignition switch.. you will need to check that..

you can also bypass the relay and connect the pump directly to the battery to get the car home or to a shop, just remember to take out the wires after,

the problem I'm thinking is in the ignition switch. it could be the wires or a faulty switch this needs to be checked,, to do this, Pull the cover of the relay, you will notice a coil and 2 contacts.. turn the ignition on, press the contacts together and try starting now, if it starts it means its the ignition switch.

ps don't forget to rate this if you found it helpful as it can be of help to others as well.

Posted on Dec 30, 2012

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Posted on Jan 02, 2017

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SOURCE: 1999 TAHOE z71 STOP AFTER FUELING GAS

take it to a GM dealer and see if the electronic key reader needs to be replaced

Posted on Aug 23, 2008

  • 71 Answers

SOURCE: My 1997 Chevy 4 dr 4x4 has fuel delivery problems.

try replacing your relay first not that expensive and easy to change also some models have a red jumper wire on the relay plug that sends power directly to pump

Posted on Mar 27, 2009

  • 30 Answers

SOURCE: not starting ran out of gas,added gas and still not starting,can hear fuel pump running,smell gas at engine and exhaust.

This could be a couple of things. Since the gas ran low, it probably is sediment in the tank mucking things up. The sediment is probably blocking the pathway and reducing pressure.

Try replacing the fuel filter (always a good thing.) The other typical place is the strainer on the fuel pump inside the tank. try banging on the bottom of the tank to maybe loose the particles from the strainer, otherwise you may have to get inside the gas tank. If you have to do that It may be a good idea to just replace the fuel pump (the fuel pump uses the gas as a coolant and may have overheated.)

Another place to be concerned is the injectors. Rarely they start collecting deposits as well. Try some cleaner in the tank. The next thing is removing the injectors and soaking them in alcohol (again not easy)

Posted on May 28, 2009

longbow243
  • 103 Answers

SOURCE: my suburban is not starting.

Could be a bad fuel pump. There has to be ENOUGH pressure to break the injectors so just because you have fuel doesn't mean you have enough pressure. I would suggest testing it at the service port and see what you have. If you have Central SFI your pressure needs to be 60-66 psi, if it is SFI, your pressure needs to be 56-62 psi. (GM DOC #66129)

Posted on Sep 01, 2009

czaa
  • 4514 Answers

SOURCE: 2001 cavalier! Already chaned gas

yes in this computer age--have you had it scanned and did u look in other repair manuals--may need to do varius multimeter tests on components--really cant assume any part is working till u know it is--did u disconnect the lines in engine area to chec for fuel flow

Posted on Nov 21, 2010

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Sorry forgot to mention, when trying to start with starter running fuel pump won't run


Hi Ed:
I don't know what vehicle you're dealing with, but when you turn the ignition to "on" you should be able to hear the fuel pump (provided it's electric) running. After a few seconds, the sound will change, indicating that the system is pressurized. Even if the fuel pump does not run while the starter is engaged, there should be enough residual pressure to provide start=up fuel.
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