Battery not charging - JeepForum.com

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post #1 of 19 Old 07-14-2014, 07:58 AM Thread Starter
Treybox
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Battery not charging

My jeep battery is not charging it know the common problem could be the alternator but I'm asking if my 1989 jeep Wagoneer has a voltage regulator or any fuses in the wiring that I need to know about. Thanks

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post #2 of 19 Old 08-07-2014, 07:00 AM
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Moved to XJ Cherokee Forum.
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post #3 of 19 Old 08-07-2014, 07:35 AM
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No fuses.

http://www.cherokeeforum.com/f2/batt...or-test-78125/

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post #4 of 19 Old 08-14-2014, 09:27 AM
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On the later jeeps the Voltage regulator is part of the PCM. I think on 89's it's actually part of the alt. That's probably on the forum somewhere. Check NAXJA if not. Definitely have the alt tested, and at more than one place. The last one I had that went out tested good 6-7 times at 4 different parts stores. That send me on a wild goose chase in which I replaced most of my charging system before giving up and replacing the alt. Lo and behold everything has been happy since. (happier actually, since I had done a complete upgrade of the charging system I used a 160 amp durango alt).

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post #5 of 19 Old 08-14-2014, 01:13 PM
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Was that durango alt a direct bolt on bluejunior? Oh and have battery tested too sometimes a bad battery won't take charge also check all your wires to alt and battery, hot and ground or maybe upgrade it with some 4 gauge welding wire from homedepot or any hardware store. If neither of those then hit junkyard for a cheap alt if you wanna save money
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post #6 of 19 Old 08-14-2014, 01:32 PM
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Quote:
Originally Posted by JeepinInJackson View Post
Was that durango alt a direct bolt on bluejunior? Oh and have battery tested too sometimes a bad battery won't take charge also check all your wires to alt and battery, hot and ground or maybe upgrade it with some 4 gauge welding wire from homedepot or any hardware store. If neither of those then hit junkyard for a cheap alt if you wanna save money
I had to grind a little on the alternator bracket and the block for clearance, but the bolt patterns and wiring were identical. Just like the ZJ 136 amp swap, except more power. Mine came from an '03 Durango with the 5.9. I know it has to be a 5.9 durango, I think the year range was 99-03. Older ones work too, you just have to do some minor splicing to adapt the wiring (the circuit diagram would look the same, the connections are just laid out differently, so you need to take the alt AND the harnes from the donor vehicle, then cut off the cherokee pigtail and splice the wires together). Worth noting that I had replaced all my grounds and my major positive leads (except the starter) with two gauge while trying to diagnose/fix my own no-charging issue.

That was for my '01 though. I can't remember how the voltage is regulated on the 80's models. The 97-up ones are regulated by the PCM, I think the earlier 90's models are too but I never researched them or the 80's ones since I've never known anyone that had one.

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post #7 of 19 Old 08-14-2014, 03:24 PM
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Guys, guys, guys....

Totally different alternators and charging systems.

What works on a 2001 doesn't work on an 89.

The 89 has an AC Delco CS-130 alternator. They're as common as belly buttons and can be found in higher outputs.

That said, be aware that the cabling and grounding system on the 89 sucks big time and more can be reaped by improving that system instead, or along with, a higher output alternator.

Jackson, click on the link in my signature and work on Post 1, including the upgrades.

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post #8 of 19 Old 08-14-2014, 04:05 PM
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Cruiser54-I'm gonna redo all the grounds and positive wires with 2 gauge welding wire and getting me an optima battery. I just want a 160 or higher alt that is it is almost a direct fit, not much modification needed. I will be running a 1600 watt sound system, a light bar, and I'll have an electric wench in the future so just keeping my eye open for information such as the alt upgrade. If you know of a vehicle that has one I could grab from a junkyard please let me know. Thanks guys.
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post #9 of 19 Old 08-14-2014, 04:07 PM
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There are bolt-on high output CS-130 alternators. Gonna have to hunt one down.

If you own a Renix Jeep, you'll want to check this out.

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post #10 of 19 Old 08-14-2014, 04:27 PM
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Well thanks for the pointer in the right direction... Hey since your pretty knowledgable about this subject can you tell me if regulator is built in to the alt?
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post #11 of 19 Old 08-14-2014, 04:32 PM
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Quote:
Originally Posted by JeepinInJackson View Post
Well thanks for the pointer in the right direction... Hey since your pretty knowledgable about this subject can you tell me if regulator is built in to the alt?
Yes, it is.

Got an alternator/generator/starter rebuild shop in your neck of the woods?

If so, go see them about your idea/project/mod.

If you own a Renix Jeep, you'll want to check this out.

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post #12 of 19 Old 08-14-2014, 07:16 PM
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Yep got one about 30 minutes or so away and will do thanks a lot you gave me a start in right direction anyways!
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post #13 of 19 Old 08-14-2014, 07:40 PM
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Quote:
Originally Posted by JeepinInJackson View Post
Yep got one about 30 minutes or so away and will do thanks a lot you gave me a start in right direction anyways!
A "start" in the right direction? Is that a pun?

If you own a Renix Jeep, you'll want to check this out.

An index to over 30 write-ups can be found in the link below

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post #14 of 19 Old 08-15-2014, 09:35 AM
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Not intentionally lol this time
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post #15 of 19 Old 08-15-2014, 05:31 PM
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Quote:
Originally Posted by JeepinInJackson View Post
Not intentionally lol this time
Let us know what you find. And do the cable upgrades!!

If you own a Renix Jeep, you'll want to check this out.

An index to over 30 write-ups can be found in the link below

www.cruiser54.com

My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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