Pre 84 Trucks 1st gen pickups

'82 pickup voltage/charging problem

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Old 04-15-2011, 02:08 PM
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'82 pickup voltage/charging problem

I have been having quite a problem trying to figure out why my charging system in my 1982 toyota pickup is not working correctly.


I've already had a problem with my battery slowly discharging and having it die on me twice. After running my truck in idle and even revving it a bit when i test it with a meter the battery is at most gotten to 11.97 volts and will slowly drain over time. Thus not getting to the 13.8-14.8 criteria


I have replaced my external regulator today and still no help dissappointingly. I also replaced my alternator probably a good 3 months ago and quite hesitant in pulling that stupid thing off till its the last resort and i try all my other solutions. All my fuses are good, and i know my battery is fine since i have taken it out and checked it with a meter over time to see if it was bad or not.


Im just about to make sure all my connections are solid and not corroded and figure i would hopefully get some advice from a more experienced person then myself (first yota i've owned). I can some pictures of any certain area if you feel it will help.


BTW i have the 22r engine if that matters at all. Thanks again for your time and looking forward to any possible help

Last edited by gunbarrar; 04-15-2011 at 02:13 PM.
Old 04-15-2011, 04:04 PM
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Did the charging system work after installing the new alt and then quit again ? Did you have a load test done on the battery or just check it with a volt/ohm meter ?
Old 04-15-2011, 04:15 PM
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Yes the charging system had worked fine on up to about 3 days ago so a good solid 3 months. I was using my truck to drive to work in the snow and it would sit generally for a solid 8 hours and countless nights without being checked on and would start right up when i needed it. As far as a load test do you mean if i would run accessories while running the truck? i just checked my volts before i did a 5 minute drive and it was 12.23 and i went out, used my lights, turned on my radio, and put brights on for a couple minutes and came back and checked it and it lowered to 12.03. Definitely not fixed since i had changed out the old regulator today. Any better things i could do for a load test or is that what you meant? Thanks for your reply

Also, is there a way to check my alternator output without actually taking it off? I'm sure this has already been asked but i can't seem to find a direct answer and it would save me a great deal amount of effort.

Last edited by gunbarrar; 04-15-2011 at 04:33 PM.
Old 04-15-2011, 05:02 PM
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Take your battery to AutoZone or similar auto parts store and get it "load tested". It sounds fried to me.
Old 04-15-2011, 06:43 PM
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Is it possible for my battery to be fried even if it will stay at the exact voltage it was since the last time i had driven it? for example it is staying at 12.03 since my last post, so its not charging, but i can also get it fully charged off a wall charger and slap it back in and it will, over time, be drained the more i drive it. Thanks for your input aswell
Old 04-15-2011, 07:56 PM
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sounds like a "sticky" brush holder in the alt ..


.
Old 04-15-2011, 08:46 PM
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Ah well seems ive checked out pretty much everything else it seems i will have to end up checking out the alternator as much as i didnt want to. haha. Will let you guys know the outcome tomorrow and post some pics up of my truck.
Old 04-16-2011, 03:49 PM
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So it resulted in being the alternator, what do ya know! the good thing is it was quite fast taking it out and running it on a bench test at the nearest napa store, picked up a new one with a lifetime warranty for 45 bucks, and put it in within the hour it was running like a champ! thanks again for all your guys input. Now its time for my small projects, new paintjob, power steering, and some minor enterior work. other than that i am very satisfied. was going to take pictures today but im in oregon and it is straight downpouring so ill save that for another day. Also glad i found this forum and its great wealth of knowledge.
Old 04-18-2011, 09:49 AM
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Name:  P1000180.jpg
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As i promised. not to bad for my first yota, although the antique eggshell white paint is the hardest to find in any hardware store anywhere for some reason . grrr
Old 04-18-2011, 09:54 AM
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is "enterior" both interior and exterior?

nice truck!
Old 04-18-2011, 10:05 AM
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haha, yeah thanks for the ensight. I have had no luck finding the paint to touch up the outside, and cannot even have a place order the kind i need, so im figuring on renting an electric sander, and repainting the truck. Only to find out when is the best time since afterall it seems to rain 4 days outta the week here.
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