Alternator problems

[92coupegtx]

Ok after a lot of searching and finding nothing I have decided to post it up. I have a 92 coupe with a red top. Ok the problem I am having is that the alternator works fine untill the engine gets up to temp then it will cut in and out, then just stop working period. I have checked all my grounds, wiring, battery and had my alternator bench tested everything checks fine. I have an hks turbo timer and that is how I'm watching the volts.
Modified by 92coupegtx at 4:55 PM 8/21/2009

[stockbee]

Hey there, sorry to hear about your alt. troubles, as I've had some lately as well.

If your battery light and your E-brake light coming on when your voltage goes haywire? And how much of a variance does your HKS equipment showing you have?

Mine was going anywhere in between 10.7 and 13.3 which is not enough voltage for everything else in the car and the coil packs at WOT. Mine was cutting out, which yours probably is too.

I know you said you bench tested it and it checked out fine. but you could at least try another one and see if it doesn't solve the problem, and if not that would at least rule that possibility out.

IF it's bad you can surely find a KA alternator to put on. You'll have to swap the pulley from the SR and put it on the KA one and drill out the top of the KA alternator for the larger SR bolt to slide through, some say you need a washer but I didn't use one on the '93 80 amp I used.

Either way, I'm using it and have been for a week now and I've got no more voltage issues, now if I can get my idle to settle itself since I've installled this boost controller.....

Good luck.

[92coupegtx]

When I first start the car it is putting out right around 14 volts then when it starts acting up it drops to about 10.8~11 volts the. It will randomly start working again but only put out 13.5 or less then eventually it will only read 9 vdc. When I go WOT yes the battery light and brake light come on. The alt was bench test as said in the first post I had it rebuilt for a just in case thing cause it sat for 2 years not that I knew it was bad just wanted to be sure it was good. Thank you for your input and I will post the resualts when I get them.

[stockbee]

okay, good luck. No problem for the response, sometimes it's hard to get them.