Question about 2000 Jeep Cherokee
To begin with, did you check the ground system? Make sure that the ground wire that attaches to the block is clean and making good contact (remove it and clean with sandpaper) at both the battery and block itself. Also check any secondary grounds such as the small ones that attach to the fenders and firewall. (generally, I run a 12ga wire from battery (-) terminal and attach it to firewall and both fenders to insure no ground problems.) Make sure that power distribution center is properly grounded as well.This may be through a ground bar attached to fender or through wiring to relays.
As for relays, you need to isolate a particular relay to determine if good/bad. Likely you may not have to go this far if problem does not happen again once everything is grounded properly.
Posted on Mar 03, 2009
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