Hey need a little advice I've got a 91RS 3.1v6 and for no reason I can find an alternator last about 2 weeks. I've checked connections replaced the battery. I'm on alt#3 has any one had a similar problem and whats thier fix.

 

Exciter wire to the voltage regulator not having enough resistance would cause this. The resistance is supposed to be supplied by your battery idiot light and voltage gauge. Is it working? If the wire is connected directly to power it burns out the bridge rectifier (in minutes not weeks though).

 

Quote:

Originally Posted by animute

……I'm on alt#3 has any one had a similar problem and whats thier fix

What is the make and model number of the alternators?

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Happy Racing!

 

Paladium rebuilts from Advance.

 

I've got a couple of manuals (chilton&Haynes neither very good) this is a cs type alt 4 wire #10 black to bat, #12 red from the starter, 14#brown to 20 amp fan fuse circuit, and a#14 black not on any of the wiring diagrams.
With key off : #12red hot
#14brown not
#14black not
with key on : #12 red hot
#14 brown hot
#14 black not
hot = bat voltage not = zero no inbetweens

 

Your voltages are correct.

Try Advances’ Remy NEW alternators.

Lifetime warrantee.

Part number 91303.

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Happy Racing!

 

thanks, don't ask me how I found a couple of wires crmiped flat under the steering column mount the other day and didn't have time to fix them so this am. I cut out the flat spots and barrel spliced 'em and the damn thing started chargin, and I found a motors manual 91-94 GM for 10 bucks.
Thankyou guys again I've only just joined this site but I've found some answers to some naggin' questions

 

ALASS, I am but a fool. It worked, it was charging, I shut it it off, went inside, an hour later started it up to go somewhere and well its got another "new" alternator now.