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Old 07-21-2012, 03:58 PM   #1
TAX3DtoD3ATH
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Member#: 310120
Join Date: Feb 2012
Chapter/Region: NWIC
Location: federal way
Vehicle:
1988 gl wagon
silver

Default altanator issues with a 88 gl wagon 1.8 non ac

so iv been going thru alts in this damn thing like crazy. the first one spiked, and the two following worked for a day. if looked at all the connections and wires, fuses and what not and all looks good and normal, so my question is does anyone have any ideas on what might be wrong? im in spanaway off canyon at mclendons. could really use some help!
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Old 07-21-2012, 04:42 PM   #2
Cougar4
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Member#: 53443
Join Date: Jan 2004
Location: Anchorage, AK
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2001 LL Bean Outback
Winestone

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I'm sorry but I can't meet you since I'm in Anchorage, AK, off of Muldoon. You are out of my service area. LOL

I suggest you check to see if the battery is ok. There may be a problem with it that is causing the alternator to put out full current all the time. There may also be a problem with the sense wire on the back side of the alternator. You can't just look at things and be sure they are ok, you have to do testing to make sure electrical systems are working as they should be. If things are working correctly both wires on the back side should be close to the battery voltage while the alternator is working. When you replace the bad one have the current output of the new one checked to make sure it isn't putting out full output current.
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Old 07-21-2012, 04:57 PM   #3
TAX3DtoD3ATH
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Member#: 310120
Join Date: Feb 2012
Chapter/Region: NWIC
Location: federal way
Vehicle:
1988 gl wagon
silver

Default

yeah that would be an expensive gas bill. yeah i just had my cowork.pick me up with the company flat bed so im on my way to run tests. when i did the visual check i was looking for fried wires and stuff but found nothing. so idk but ill let ya know what i find out from the tests.
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Old 07-21-2012, 05:17 PM   #4
Cougar4
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Well a visual check to start off with is certainly a good thing to do alright, especially if you don't have any test tools with you at the time.

Technicians are standing by.
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Old 07-21-2012, 06:48 PM   #5
TAX3DtoD3ATH
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Join Date: Feb 2012
Chapter/Region: NWIC
Location: federal way
Vehicle:
1988 gl wagon
silver

Default

so i found that my battery is fried. i pulled the caps off and hooked to a jump box/charging system tester and the alt's output range failed. i dont have a meter so i have no idea what the output is at but it failed. but i still dont understand how a dead battery could kill a alt in a matter of an hour or two of operation ya know
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Old 07-21-2012, 06:49 PM   #6
TAX3DtoD3ATH
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Member#: 310120
Join Date: Feb 2012
Chapter/Region: NWIC
Location: federal way
Vehicle:
1988 gl wagon
silver

Default

lol o and my battery doesnt bubble and only holds a charge for about 15 mins. pretty much long enough to let the car sit for a few mins then start it again.
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Old 07-22-2012, 04:22 AM   #7
Cougar4
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A bad battery can have a shorted cell which would make the alternator charge at full output all the time. Whenever a alternator is replaced it is usually a good idea to replace the battery also unless it is fairly new and tests ok. It sounds like your battery may have high internal resistance since it won't take a charge.
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Old 07-22-2012, 06:12 PM   #8
TAX3DtoD3ATH
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Member#: 310120
Join Date: Feb 2012
Chapter/Region: NWIC
Location: federal way
Vehicle:
1988 gl wagon
silver

Default

so i got the new alt in, im still using the old battery. i added water to it. i charged it yesterday day and it held a charge. i just started my car with it with out getting jumped. i still dont have a meter to check the output of everything. but all seems well thus far. i think i may get a new battery asap tho still but do you think it will be all right?
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Old 07-22-2012, 08:07 PM   #9
Cougar4
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Winestone

Default

I recommend you charge the battery with a battery charger since it is low on charge. Using the alternator to do that puts undo strain on it. The battery may very well be damaged and I wouldn't trust running the new alternator with it at least until it has been tested proven to be good. Either the previous alternator caused the water to boil out and may have damaged the battery also or there is a internal problem with the battery. You don't want to have another problem due to a bad battery.
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