Fred Blackstone
Body Damage is Cool
Reged: 01/20/00
Posts: 1817
Loc: Higlands Ranch, CO
|
Re: battery problems
09/20/04 01:53 AM
|
|
|
On the 94 cherokee, the alternator has an internal regulator, I have no experience with the Grande. There should be no fuseable link in the wire from the alternator, the 94 4.0L should have a power distribution center next to the battery, the maxi fuses in the pdc are labeled, there should be two 50 amp maxi fuses, primary and secondary, that need to be visibly checked for continuity (melted or blown fuse).
The conditions you have described could be caused by blown fuses, or the alternator going belly-up on your rig. Be certain that the serpentine belt is properly tightened, and there are no obvious noises from the alternator.
with the engine off, and key in the off position, disconnect the negative battery cable and use a test light between the negative battery post and the negative battery cable clamp.
If the test light does not come on, use a voltmeter to check the battery volatage which should be about 12 volts. Reconnect the battery cable, and check the battery voltage with the engine running, the voltage should be between 14 and 15 volts, if not, good chance it's the alternator.
If the test light comes on, there is a short (drain) in the electrical system. Disconnect the alternator wiring harness, if the test light goes out, the alternator needs to be replaced. If the light stays on, pull each fuse until the test light goes out to identify which component is shorted/draining.
On some alternators, you can test the alternator directly using the test hole, but that can cause problems if you don't know what you're doing.
--------------------
94 YJ, SOA, 2-1/2 Alcans, ARB-front, Detroit-Rear, 4.56:1 gears, Oasis Trailhead compressor, 4:1 Terra Lo, 37x12.50x15 SSR's, 8000 lb Ramsey, & etc.
|
|
Previous
Index
Next
Flat
Edit
Reply
Quote
