I am helping a friend with his 77.
The car was bought as a derelict, missing the engine and accessories. An engine with accessories was acquired and rebuilt. The engine compartment wiring harness was uncut and in good condition. Originality was not a consideration so Delco remanufactured alternator and starter were purchased, new battery and battery cables.
The alternator ate two belts and finally burned up. It was replaced on warranty and the second alternator burned up while eating belts. It too was replaced on warranty and the third alternator went bad. I took it to an automotive electric shop to be checked. The regulator had failed high. The shop said they had never seen that before. They took the alternator apart, tested the individual parts and found the regulator and diode trio were both bad. Both were foreign manufacture. I purchased new Delco regulator and diode trio, reassembled the alternator and installed it with a fuse in the charging circuit. It worked properly for several days then started to exhibit symptoms of over charging (blew the fuse).
During all this we spent considerable time trying to trace and diagnose the problem. The starter was replaced with another Delco remanufactured part, the battery and cables were replaced. The ground cable was checked, cleaned and moved to different locations. All fuses were removed and the car was started with a remote starter and jumper wire for ignition. While running with everything disconnected the alternator overcharged. The battery was fully charged with a commercial charger and the alternator overcharged.
Any ideas or suggestions gladly accepted and straws grasped.
Verle
The car was bought as a derelict, missing the engine and accessories. An engine with accessories was acquired and rebuilt. The engine compartment wiring harness was uncut and in good condition. Originality was not a consideration so Delco remanufactured alternator and starter were purchased, new battery and battery cables.
The alternator ate two belts and finally burned up. It was replaced on warranty and the second alternator burned up while eating belts. It too was replaced on warranty and the third alternator went bad. I took it to an automotive electric shop to be checked. The regulator had failed high. The shop said they had never seen that before. They took the alternator apart, tested the individual parts and found the regulator and diode trio were both bad. Both were foreign manufacture. I purchased new Delco regulator and diode trio, reassembled the alternator and installed it with a fuse in the charging circuit. It worked properly for several days then started to exhibit symptoms of over charging (blew the fuse).
During all this we spent considerable time trying to trace and diagnose the problem. The starter was replaced with another Delco remanufactured part, the battery and cables were replaced. The ground cable was checked, cleaned and moved to different locations. All fuses were removed and the car was started with a remote starter and jumper wire for ignition. While running with everything disconnected the alternator overcharged. The battery was fully charged with a commercial charger and the alternator overcharged.
Any ideas or suggestions gladly accepted and straws grasped.
Verle
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