Quote:
Originally Posted by percy
Questions
How to work out whether alternator or regulator has failed ?
Should replacement alternator have integral regulator?
Or can I get a Bosch reman alternator, and pair it with a Marchal regulator (Pelican Parts)
Thanks in advance
|
Percy... I had same odd tach readings when my alt was dying. And same ability to charge battery and start car but to no lasting avail. Way to diagnosis alternator vs voltage regulator = volt reg basically stops alt from OVERCHARGING system. So, if system is not charging sufficiently to over charge... it's alternator problem. If system is overcharging... it's voltage regulator not doing its' job.
Lack of charging could possibly be ground strap connecting engine/trans to chassis coming loose. It's a long shot but worth checking before anything else. Not 100% sure where strap is on your '88. Typically it's on right side of trans connected to bulkhead of car next to where shifter linkage enters/exits car.
Replaced my alt with this BOSCH rebuilt alt for $300 (after handing over my core.) Voltage reg is internal to this--VALEO. Will suggest return of old core and buy of new part is more economical to do locally as compared to shipping these parts due to weight. When alt was out of fan housing, had fan housing lathed so alt would fit into/out of housing with perfect slip fit.
ORANGE TAG WARNING NOTICE: when installing alt, battery should be disconnected and battery should be fully charged or alt may be damaged.
