Fried alternator on 68?
Hi all,
Not had time to diagnose completely but suspect I fried my alternator. 68, manual, 327, pretty stock with a few minor mods. Vintage air and more recently a mini starter. Was out for a drive and noticed that my vintage air stopped working. Looked and saw the ammeter was at a hard +40. Suspected short, so parked up immediately and checkout things, especially the the mini stater, concerned about wiring on the exhaust etc. all good, no smoke, and after a detailed look decided to try again. Disconnected vintage air, in case problem was there. No luck. Symptoms. Idle 0 amps. Any reving of engine the ammeter would rise accordingly, up to a hard 40A. Back to idle and 0A. Drove home by running up to 60mph (40A), then into neutral to coast at 0A. Not sure if it is a gauge, sense or fried alternator/regulator. Intend tomorrow to put a multi meter onto, batt, sense pin on alternator etc but appreciate any thoughts or diagnosis suggestions. Cheers |
Alt.
It could be the voltage regulator or a diode in the alt. In any event, too much voltage into the battery is dangerous. Check the charging system with a voltmeter. Jerry
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'68s had a separate regulator. Start there.
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Thanks lads,
Looks like the alternator/ regulator combo has been swapped out for an alternator with internal regulator at some stage, I cannot find a regulator anywhere. I found this image on the web, mine looks like the SI type. http://www.camaros.net/forums/showthread.php?t=182477 Also checked the alt volts 15v and ramps up to 18v with revs. With key on had bat v at pins 1&2 on alternator Decided to remove alt and take to auto electrician to check. |
Update,
Had it checked and it is fried. Suspect the addition of a few extra loads, 40 years was enough to push it over the edge. Got a new 90A one installed and all good. In some ways was glad it was the alternator, at least the fix was quick. Others might have been cheaper but am getting a bit over chasing electrical problems. Thanks for the advice guys. |
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