97 dirty d

about once a week ill blow the fuse to the starter and the truck wont start. simply change the fuse and it is all good but it is really starting to become a pain. im not good with electrical at all, id greatly appreciate if anyone had any input on where to start looking at all. i checked under the fuse box for any corroded wires or anything out of place but everything looked good. any help would be appreciated! thanks!

1991Jeep_Man

It has to be a wiring issue somewhere. Now don't quote me on this, but I think it could also be the starter solenoid. If I remember correctly, the solenoid is what controls the current and power to the starter, and if it is drawing too much then that would cause fuses to blow.

XJ5150

Is 30amp the correct rating for that circuit? If so, has the circuit been modified? If not, have your starter and solenoid checked... sounds like that's what it might be... resistance caused by a failing electrical part causes heat and can overdraw the circuit.

2Evil4U

I had the exact same problem on my 97. Checked everything and nothing was frayed, or obviously miswired.

I had changed the starter four months prior to the fuses starting to blow and it works fine. It does turn over a little slowly, though, IMHO, but it's doen that from the installation, nothing changed when the fuses started failing. That could be causing a few more amps to be drawn. Strange thing is it never seems to blow in the middle of starting the truck. The truck will start normally, and the next time I try to start it, nothing.

I ended up putting a 40A fuse in place of the 30A and it's been fine for the last several months.

97 dirty d

thanks for all the help! ill start off by trying a 40 amp, see how that works. If not i guess ill go from there

freegdr

this is not good to do the fues is blowing because there is to much of a draw occuring a bigger fuse could lead to a fire i would check the starter first, but thats just me

NCMetalMechanic

is your jeep like everyone elses? by that i mean is it leaking oil from everywhere? if the starter has had oil dripping on it for a long time, the oil can get into the starter solenoid and cause all sorts of problems with current draw, causing you to either blow the fuse, OR slow crank speed

2Evil4U

No leaks on mine and new, dry starter.

And, yeah, upsizing the fuse was a decent joke at work, since I'm the site reliability engineer, but the wires I saw are more than capable of handling 40 amps for the limited amount of time the engine is actually being cranked.