Fuse problem, car won't start - Pontiac G6 Forum
 
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post #1 of 4 (permalink) Old 12-19-2011, 09:33 PM Thread Starter
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Fuse problem, car won't start

What would cause fuse 44 to continuously blow in a 2007 G6? Went to start the car this am and it would turn over but nothing else. Changed some fuses and they are blowing again and again. Was working fine the night before. Solutions? Thanks
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post #2 of 4 (permalink) Old 12-20-2011, 07:01 PM
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Originally Posted by guedo View Post
What would cause fuse 44 to continuously blow in a 2007 G6? Went to start the car this am and it would turn over but nothing else. Changed some fuses and they are blowing again and again. Was working fine the night before. Solutions? Thanks
Which engine?

44 serves the fuel injectors on a LE5, LZ4 & LZ9

44 serves the even-number cylinder fuel injectors & ignition coils on the LY7

There's a short to ground somewhere on the supply side of the injector circuit. Maybe a squirrel got hungry for some wiring last night. Most cars use negative-triggering fuel injector circuits in which one side of the injectors is tied to a constant 12 volt supply when the ignition is turned on, and the ECM momentarily grounds the other side when a fuel pulse is needed. So if the fuse blows each time the key is turned on, you have a hard short to ground in the harness downstream of the fuse.

Disconnect the injector circuit inline harness connector & try again with a good fuse. If it doesn't blow, the problem is downstream of that connector. If it does, it's upstream. Hope this helps.

Here's the LE5, LZ4 & LZ9 schematic if you're interested:
https://www.g6ownersclub.com/forum/at...1&d=1324449144



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Last edited by greenman; 12-21-2011 at 03:34 PM.
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post #3 of 4 (permalink) Old 12-21-2011, 02:48 PM Thread Starter
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Not quite a squirrel but a mouse. Went to town on a bunch of wires, out a few grand now. Thanks though.
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post #4 of 4 (permalink) Old 12-21-2011, 03:29 PM
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Ouch! Sorry to hear that. That's pretty common really. It's hard to believe they like the taste. Sounds like yours wanted to try them all. Maybe you should consider getting a good hunter-killer cat.




Last edited by greenman; 12-21-2011 at 11:14 PM.
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