Question about Chevrolet Blazer

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I keep blowing fuses from my fuel pump every time I turn the ignition on what could be the problem. Its a 1994 s-10 Blazer with vortec 4.3

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OK, the fuel pump could be shorted out, or the wires to the fuel pump could be shorted causing the fuse to blow every time you turn the ignition on.

Posted on Jul 04, 2010

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Our fuel pump stopped working on our 98 Chevy Blazer V6 4.3L Vortec Engine, so we bought a new one. A couple days later (before replacing the fuel pump) it started up and ran but ran crappy. So we did


what did you do (replace it) if you still have a miss you may need to tune it up / make sure the fuel pump you bought is for the right psi for your blazer

Mar 27, 2013 | 1998 Chevrolet Blazer

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95 chevy blazer keep blowing the ecm fuse


If it "keeps" blowing the ECM fuse, it is because you "KEEP" replacing the fuse without diagnosing and repairing the reason the fuse is blown.

Please review these articles:

Where's The Fuse?

What Else Could Be Wrong?

What To Expect From An Online Car Expert

Jun 04, 2011 | 1995 Chevrolet Blazer

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L999 Chevy Cavalier keeps blowing fuses and won't start


you have a SERIOUS electrical problem. - '.
BUT which fuses keep blowing - that is where we need to start.
1. is it the ignition circuit. - - does starter motor turn over when you trun the key.
2. is it the starter relay circuit.
3. is it the starter motor circuit.
4. is it the computer circuit. - - do you have fuel pumping to the engine and cylinders.
5. none of the above. - - do you have spark at the spark plugs.

Apr 14, 2011 | 1999 Chevrolet Cavalier

1 Answer

Mycar wont start ichanged the fuelpump fuse and it keeps blowing its a 2003 pontiac grandam it turns over just wont start


REMOVE FUEL PUMP RELAY.REPLACE FUSE IF STILL BLOWS SHORT IN PCM TO IGNITION CIRCUIT.IF FUSE DONT BLOW I AM LOOKING AT A BAD FUEL PUMP RELAY OR FAULTY FUEL PUMP.

Jul 10, 2010 | 2003 Pontiac Grand Am

1 Answer

Ikeep blowing the ecm fuse as soon as i turn on the ignition and when i hoo up the positve cable to the battery i get a big spark


CHECK FOR IGNITION WIRES SHORT TO GROUND.I HAVE SEEN A BAD FUEL PUMP BLOW ECM FUSE.REMOVE THE FUEL PUMP FUSE DISABLE FUEL PUMP AND SEE IF FUSE KEEP BLOWING.

Sep 01, 2009 | 1994 Chevrolet Cavalier

1 Answer

1999 chevy blazer wont start


THE FUEL PUMP IS BAD.

if your losing fuel pressure after the pump runs the drain back valve in the pump has failed.

and i doubt that you are seeing enough fuel pressure to run a vortec engine.

low fuel pressure equals a non running vortec

Apr 11, 2009 | 1999 Chevrolet Blazer

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