40 amp ignition fuse keeps blowing
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Posted on Jan 02, 2017
SOURCE: ignition switch fuse terminal is blowing red 40 amp fuse when i try to replace it
A fuse that is consistently blowing is telling you that there is a short in that system. Don't attempt to bridge it or use a larger amp fuse or you will have a major problem. You will need to start tracing wiring to destinations to find the short. If while moving harnesses around problem ceases to exist, look at nearby items where you are working and try to locate what was grounding. Sometimes people will stop if short disappears, leaving open the possibility of it happening again.
If you are not comfortable working with wiring, then leave it to professionals who do this every day. It's not really difficult but requires patience and a good bit of knowledge to do this right!
Posted on Apr 18, 2009
SOURCE: blowing ignition a fuse
I believe you mean a 40 amp fuse? Wow! that's a dead short somewhere on a large wire. Could be difficult, or hopefully easy to find. There's always the smoke test option: Solder a jumper wire across the top of the fuse, making the circuit essentially un-fused and look for the smoke. Not the best method, but quick. Warning: if you do this, depending on where the short is, you could melt down the wire harness or possibly start a fire. Try this at your own risk! IT'S A "LAST RESORT" THING, WHEN YOU'VE TRIED EVERYTHING ELSE AND FAILED! Good luck.
Posted on May 25, 2009
SOURCE: 40 amp spade fuse in the engine compartment fuse box
look for a short in the harness
Posted on Aug 23, 2009
SOURCE: 40 amp ignition fuse keeps blowing
ok. fuse to WHAT ? 40 maxi fuse takes a lot to blow.
Posted on Jan 06, 2011
Get yourself a set of factory wiring diagrams,
otherwise your wasting your time
You have no idea what you working on, without
reference material
Helm.Com
Posted on Jun 21, 2012
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