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Here I go again..... Now it's a voltage problem in my 87 IROC.......

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Old Dec 9, 2002 | 06:31 AM
  #1  
tazmision89's Avatar
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From: Long Island, NY
Here I go again..... Now it's a voltage problem in my 87 IROC.......

The episode of the neutral switch is over but now when I am driving my car and I get to a light, the voltage meter jumps from 14 to 9 to 14 to 9 and then stays at nine till I throw the car in neutral and give it gas. BTW, it does the samething even in neutral when I don't give it gas.

Lights dim inside and outside the car. Never had this problem at all. What do you guys think it is?

Thanks.
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Old Dec 9, 2002 | 10:10 AM
  #2  
Ed Maher's Avatar
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Joined: Sep 1999
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From: Manassas VA
Car: 04 GTO
Engine: LS1
Transmission: M12 T56
So what was the question?

Do you have underdrive pullies? If so, no surprise, of course it doesn't charge worth a damn at idle.

Otherwise, unless you've recently added some high draw accessories, and unless you have a loose/bad wire/connection, i'd say your alternator on it's way out. No surprise there, the alternators that came in our cars are complete junk and die all the time.

You can upgrade to a CS-144 series alternator like came on the B4C cars. It's a large case high output design and is not prone to oveheating like the stock CS-130. Do a search on CS-144 swap or variants to find info in this, you'll need at leasta new alt. bracket to handle the bigger case, i forget if there is anything else. You also *may* be able to swap a CS-130D in, which is the later model open case 130 design that also cools much better, but i don't know if there is anything useful out there on this swap. Or just replace it with a stocker and cross your fingers.
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Old Dec 9, 2002 | 11:41 AM
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tazmision89's Avatar
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From: Long Island, NY
thanks for the info!!!
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