87yoda87

I just switched out a 1983 22r into my 1987 4x4. I removed the stock 87 22r. I got everything hooked up the truck will start and run, but the alternator is not charging the battery.(Alternator is brand new) I had to cut the plug that goes to the alternator from the chassis, and I tried splicing the wires but if I unhook the battery the truck dies! I have the main wire coming off the alternator bolt, and then 3 small wires. I have tried splicing them almost every possible way but truck still dies when I take the battery off. I have tried to look at the book, but it seems like I did everything right, is there something else to check? The fuses all looked good.

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abecedarian

should've kept the 87 alternator and wiring.

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abecedarian

engine swaps should be only long block swaps. everything bolted to the original engine should be carried over to the new engine.

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87yoda87

is there anyway to get around this without installing the 87 alternator and bracket?

DeathCougar

No. The 83 is externally regulated, the 87 is internally regulated.

Use the 87 parts.

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Swansen

just curious, but why are you against the 87 alternator ??

gsb15

deathcouger is right, the 87 alternator has the voltage regulator attached, where as in an 83 its on the drivers side inner fender. the alternator should always match the harness, even the early ones that we externally regulated are wired differnt in differnt years

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1979 short box. $500 special

Robrt32

AC Delco 1 wire unit........easy and cheap fix

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1992 ext.cab truck 2 wheel drive..22 RE

87yoda87

would that be like a chevy alternator? Does the 1 wire just go to the battery and thats all the wires you have to worry about? What about it fitting the mounting brackets? I have an 87 alternator, but I think I will have to pull the motor back out to get the brackets for the 87 on.

abecedarian

search the fora here. I wrote up a bit about wiring the alternator and which wire goes where. Not exactly a 1 wire install, but all the details.

saved you the probs-
http://www.yotatech.com/f116/alterna.../#post50851269
using the 87 alt.

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87yoda87

well the brackets look to hard to take off and to put back on without pulling the engine out. I think I will try to use the 87 alt and just build a new bracket using the 83 stock brackets.

DeathCougar

Too hard?

You swapped an engine, but 4 bolts is too harD?!

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Swansen

Do you mean hard, as in they might stripe or are rusted on?? or do you actually mean they look like they are to hard to get off because of where they are?? Ether way, its probably not actually that bad. Actually, i think they are the same brackets on the 22RE, and i've had those off, they are not that bad.

??????

87yoda87

no they look like they are hard to get to, and I think you have to take several other things off to get the bracket off.I dont have the truck here with me, I am trying to remember though.

X-Tool Pimp

MOD EDIT: (Lysmachia) BANNED!

X-TOOL posted 60 bannable images. Way tooo much crap.... I coulda banned all posts but I wanted everyone to see what a jerk he was. 60 posts of the same Image... I hand cleaned this one.

Come on Guys! We ALL OWN YOTA's Who cares? Let's leave the fighting to the hummer guys!

87yoda87

What is all that about????????

DeathCougar

he posted many pictures of a middle finger with "F" yotatech in the middle of it. Posted in any thread he could get in. Big dramafest last night brought to you by the Rock Winers 4x4 club.

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87yoda87

what does people do to install the 1 wire chevy alternator? Do you have to fab your own brackets?

87yoda87

OK, I finally got around and installed the 87 alternator and mounting brackets and returned the truck back to stock on that part of it. I respliced the wires back to the original plug for the 87 alternator. I started the truck and removed the battery cable and the truck dies. The alternator seemed to work when I bought the truck but not 100% sure. Also, the 87 alternator has been setting out in the weather for about 2 months and has been rained on and wet. Do you think the alternator is just bad or.....? All the fuses in the black fuse box are good. Any other ideas?

87yoda87

I bought a brand new alternator today and put it on the truck. I started the truck up, and let it run for a minute. The charge light on the dash wont go off, and when the truck is running and I pull the positive cable off the battery the truck dies. What else could it be?

Swansen

I'm not sure how thoroughly you followed the wires to and from the alternator, but check all of them, and make sure they are all good, and have good connections. I guess it is possible that water got in somewhere and as soon as current was run through it, it shorted out. That said, i would invest in a multimeter, they are like $10, that way you could figure out for sure if its the alternator or not.

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88 PU, 22RE, custom bed, other random things, in the process of being restored, more or less, and driven daily..... My PU

91toybeater

I'm suprised no one has told you yet. It's an alternator, not a generator. You need the battery hooked up to excite the windings to create electricity. It will not run with the battery disconnected. At the same time, if you disconnect the battery while the engine is running, you'll most likely burn up your new alternator.
You need to get your wiring back in order, put in a new or at least, tested and confirmed operational, alternator and quit pulling the battery cable while it's running.
Good luck.

abecedarian

actually, it will run off the alternator once the engine has started.
it has two connections to the battery- one for the windings, the other for the regulator. once the engine has started and the alternator is producing current, it will self-excite the field windings and regulator. and that's one reason it's not recommended to do so- it can cause the system voltage to climb too high.


87yoda87- there are a couple of fuses for the alternator so make sure they are all good- in particular the 'charge' fuse, which I believe is a 7.5 amp

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gray94toyopu

im having about the same problem in my 94 toyota pick up. When ever i turn some thing on real quick like the bright light or fan motor it makes my truck skip. when i turn the turn signal or some thing on the truck will skip to the turn signal.I took the truck up to the alternator shop and he said there was nothing wrong with altenator.Does any one have any ideas that could be causing it. i done put new wires plugs distrubture cap and button. new batterie new terminals and none of it helped.