fuse blows when key on
06-14-2013, 12:17 AM
5th Wheeling
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Join Date: Apr 2003
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fuse blows when key on
97 F150 4.2 auto with Simple trans pan gasket change because it was leaking and now the ign fuse blows everytime i turn the key to the on position.
Ran fine before now what? can't pull code with reader with key on or off.
06-14-2013, 01:00 AM
Join Date: Sep 2006
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What is the fuse # that blows? #30?
The PCM can't diagnose primary power feeds directly so would be of no value looking for code.
06-17-2013, 09:41 AM
5th Wheeling
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Think its #25 its the main fuse for the ign. 30 amp
pops the second the key hits on.
traced the harness for rodent or scraping and found nothing.
06-17-2013, 10:56 AM
Join Date: Jan 2004
Location: St Louis
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Go back and look again. Also, tell us WHICH fuse box it's in.
07-05-2013, 11:39 AM
5th Wheeling
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Join Date: Apr 2003
Posts: 49
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update
After much tracing of wire looms and plugs, It came down to bad slide switch
for the ign system. Contacts inside switch were cooked.
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