Hi Guys,

1988 Toy 2WD DLX, 22R with 5-spd. 200,000ish miles
Yesterday I stopped to put gas in it. When I started backup the two lights came on together at idle. I revved the engine slightly and they went out, at idl they came back on. I left and as I started cruising they went out and was ok to home about 4 miles away. This morning I started it and it was good, I stopped by O'reily' Auto Parts and when I went outside with them to check it the lights came back on. The employee with the tester said that the Alt was only showing 33~AMPs so I revved a bit the light went off and it read 44~ amps. I drove home and the lights stayed on the whole way. I pulled the Alt and went buy a new one and installed. When I first started it back up the lights were back on, I shut it down and re-started and they have been on ever since. They are FAINT but on. I saw the thread about the relay on the Pass side but I can not locate it. I do have a green box with a connector with a bunch of wires going to it that the box has emission control on that when I unplug the engine will run but not idle. I have looked a the charge fuse, With engine off I have 12.8 volts and running I have 14.3 so I think that the Alt is good, I think my old one was too but with so many miles it didn't hurt to replace I guess !!Engine fuse and tapped the dash board. Does anyone have pic of this relay ?
any other tips appreciated.

Thanks,
22R88

 

search "alternator brushes" .. this is your problem .. to a "T"


.

 

Thanks for the reply.
Even with a brand new alternator you think it is the brushes ?
I will research it though
Thanks,
22R88

 

After much research last night, I went after it this AM. I started it and let it idle while feeling around the B plug and wiring and going watch the light. After a bit I noticed that the lights were bright so I figured I was on to something. I felt around some more and when I pushed the electrical connector on the rear of the ALT it snapped in place the idle changed a bit and the light were off. Seems OK now. I hear everyone about the aftermarket alt, but O'reilly list theirs as a Nippondenso reman so I am going to hope for the best. Thanks for your help and advice.

22R88

 

i had that issue, was the brushes in the alternator, cheaper way of fixing it instead of a whole alternator... my 2c...

 

Mine does the same thing. I think it's something in the cluster but have not researched it yet