F8 Ignition/ Starter fuse keeps blowing!
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Newbie
Joined: Mar 2010
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Model: Cherokee
F8 Ignition/ Starter fuse keeps blowing!
Trying to help my neighbor.
he has a 1999 grand cherokee. the F8 starter/ignition fuse pops immediately when replaced.
i would think a wire is grounding out from the fuse to Starter solenoid??, but was hoping some jeep gurus would have a solution to hopefully a common problem for me?!
thanks
he has a 1999 grand cherokee. the F8 starter/ignition fuse pops immediately when replaced.
i would think a wire is grounding out from the fuse to Starter solenoid??, but was hoping some jeep gurus would have a solution to hopefully a common problem for me?!
thanks
Old fart with a wrench
Joined: Nov 2010
Posts: 14,398
Likes: 740
From: Manlius, east of Syracuse, NY
Year: 2000 XJ Sport & WJ Laredo
Model: Grand Cherokee (WJ)
Engine: 4.0L
If it blows instantly with the key off, I'd suspect the ignition switch itself. Try pulling the connector off the switch and replacing the fuse. If it doesn't blow then, check the harness connector for power. If you have power to the switch, check continuity on all the other wires to ground. If you find one, check it's resistance. If it reads infinity, it's shorted. You're going to need a pin-out diagram of the connector.
Thread Starter
Newbie
Joined: Mar 2010
Posts: 4
Likes: 0
Model: Cherokee
If it blows instantly with the key off, I'd suspect the ignition switch itself. Try pulling the connector off the switch and replacing the fuse. If it doesn't blow then, check the harness connector for power. If you have power to the switch, check continuity on all the other wires to ground. If you find one, check it's resistance. If it reads infinity, it's shorted. You're going to need a pin-out diagram of the connector.
awesome!
thanks for the fast response! i will give it a try!
Old fart with a wrench
Joined: Nov 2010
Posts: 14,398
Likes: 740
From: Manlius, east of Syracuse, NY
Year: 2000 XJ Sport & WJ Laredo
Model: Grand Cherokee (WJ)
Engine: 4.0L
I'm sorry, if it reads O ohms, it's shorted. If it reads infinity your connection to the pin or ground isn't good. My bad!
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