82 generator light on dim
Thread Starter
Instructor
Joined: Jun 2000
Posts: 118
Likes: 0
From: Goose Creek, S.C., U.S.A.
82 generator light on dim
I have an 82 and the generator light is stay on. It is not full brightness. When you turn the key to the on position without cranking it comes on full bright. But, when you start the car it stays on dim. The battery is getting 14.5 volts when the engine is running and the battery is not going dead. Any help would be appreciated.
Thanks
Thanks
Racer
Joined: Jan 2001
Posts: 405
Likes: 0
From: Fresno
Re: 82 generator light on dim (waterhead)
Mine did this when I first got the car. Shortly there after the alternator began to overcharge the battery, 18 volts. If I were you I would change the alternator I believe it should be putting out closer to 15.5 volts with the engine running. Remember its internally regulated.-TK
Safety Car
Joined: Jan 2001
Posts: 4,660
Likes: 3
From: South Central Louisiana
St. Jude Contributor
Re: 82 generator light on dim (BadjerJim)
I disagree, charging voltage max is between 14 and 15. My old nissan pickup did this to me. It was a loose ground. Bring your alternator and have it checked, but I think its good.
[Modified by 71,454,4spd, 9:45 PM 10/29/2001]
[Modified by 71,454,4spd, 9:45 PM 10/29/2001]
Instructor
Joined: Nov 2000
Posts: 179
Likes: 2
From: Detroit Area
Re: 82 generator light on dim (71,454,4spd)
Mine turned out to be a bad diode pack. The battery was still staying charged, but for how long? It cost about $20 for the part. Some people said I should have just got a rebuild, but I wanted to stay original.
Racer
Joined: Jan 2000
Posts: 252
Likes: 1
From: Pembroke Ontario
Re: 82 generator light on dim (Indynick)
Mine was also dim on my 80 ,I put in new alt with no change. I went to the local GM dealer and got a copy of a service order that said this was normal and to put a filter in front of the bulb to block the light. I have not done this yet. My car has done this for 2 years with no battery or charging problems
Cole
1980 454 4spd Convertible
Cole
1980 454 4spd Convertible
