1981 Vette choke and battery light - Hot Rod Forum : Hotrodders Bulletin Board
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Old 01-06-2009, 05:41 PM
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1981 Vette choke and battery light

My vette runs good except the battery and choke light stay on.

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Old 01-07-2009, 07:38 AM
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I'd have to dig through my old tech archive but the 1981 Corvette (and other GM stuff of that era) used a choke power relay that was fused separately. If the fuse was blown the relay would not close and the choke would not get the (B+)power it needs to properly open the choke. The engine ambient heat will eventually open the choke a bit as well as the secondary choke pull-off.....so it would probably run ok, a bit rich but still ok. I'd look for an open fuse or a failed choke power relay, these two will cause the "BATT" light to stay on as well.
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Old 01-07-2009, 10:50 AM
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I have searched the web and asked the same question on many blogs. I have come to the conclusion that i need an alternator because of the battery light and the choke gets its power directly from the Alternator because it is an electric choke. I was going to order a chrome one anyway. There is also a choke relay under the dash that is buzzing.
I will let ya know when i receive and install the 85 amp Alternator.
Mike
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Old 01-07-2009, 01:03 PM
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always "check simple first"

tighten the alt belt!!!
if it's slipping it won't charge....

check the volts output with a meter at the alt with the motor running at 1500+
if it is between 13.8 to 14.4 the alt is fine....

you can only come to a conclusion after "testing" to identify the problem source
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