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Help My 15 Amp EFI Fuse Keeps Popping - How do i stop this

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Old 07-05-2009, 11:21 AM
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Red face Help My 15 Amp EFI Fuse Keeps Popping - How do i stop this

my truck is currently not working because my efi fuse keeps popping

i dont know what to start to check if this is happening

also one fuse was lasting 2 weeks until it would pop

this morning i used 3 to try to get her to fire but they all kept popping

so what should i check for a short somewher?
Old 07-05-2009, 11:40 AM
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Any recent problems, upgrades, floods, damage or accidents?
Old 07-05-2009, 12:15 PM
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i did do the relay rear window fix before the problem happened (i dont think this is the prob) still didnt fix my rear window

also when this first happened i took it in to the dealership and they replace the fuse and fixed the bad connection at efi harness

do you think the connection is bad again in the efi harness

i have to research the efi harness because i dont even know where its located
Old 07-05-2009, 12:23 PM
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check out your o2 sensor wires. make sure it hasent started burning to the exhaust. most likely thats your problem
Old 07-05-2009, 12:30 PM
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^^ yes. Also, check that the e-brake under the dash hasn't worn through the harness.
Old 07-05-2009, 12:54 PM
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Originally Posted by simpsons721

also when this first happened i took it in to the dealership and they replace the fuse and fixed the bad connection at efi harness

do you think the connection is bad again in the efi harness

Sounds like the first place I'd look.
Old 07-05-2009, 04:02 PM
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I've heard of a bad fuel pump doing this.
Old 07-05-2009, 04:35 PM
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could it have been when i replaced my relats for the rear window
Old 07-05-2009, 05:10 PM
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i had this issue mine was shorting near the fuel injectors
Old 07-05-2009, 05:29 PM
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Originally Posted by simpsons721
could it have been when i replaced my relats for the rear window
Considering it's a completely seperate circuit, I'd say no. Unless you did some crazy wild messy wiring job and cut into the wrong wires somewhere.....

I'd look at the obvious first. You say there was a bad connection at the harness at one time and it was fixed once before. Is there a reason you don't want to check that out??
Old 07-05-2009, 05:31 PM
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i had this problem it was my o2 sensor wires burning on the exhaust in front of the cat
I just cut all the bad burnt wires off and spliced the good parts back together

Last edited by swapped89; 07-05-2009 at 05:32 PM.
Old 07-05-2009, 05:36 PM
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ya the reason i dont want to check it out right now is because my car is in the mountains stuck where no service is and to tow it home will probably cost 150

so hopefully i can get a ride there tommorow to try and fix it

thanks for the help guys just trying to gather all the info possible
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