Now I’m overcharging, My car is murdering voltage regulators |
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Now I’m overcharging, My car is murdering voltage regulators |
VaccaRabite |
Sep 18 2018, 12:05 PM
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#1
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En Garde! Group: Admin Posts: 13,445 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
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I’ve been driving my car all over for the past week or so. Last weekend I noted that it was hard to start, and it stalled while pulling away in 1st once. Weird. Didn’t worry about it and finished my drive. Got home and I checked voltage at the battery and I was making 18 volts, my VR had seemed to fail and I was pushing max voltage at the battery. Geeze, no wonder the car was hard to start with the alternator at max effort. So, I’ve done the ground thing and they are all clean and good. In my undercharging thread I ran a 10ga wire from the alternator case to the body ground point near the relay board in the engine bay. I’ve also checked all my collection of voltage regulators and all 5 of them, be they mechanical or solid state are now allowing the alternator to go full bore all the time. This is with both the brand new battery and the PC680 gell cell race battery. What do I look for now? Could I have broken the VRs by pulling them off the running car while chasing issues with the alternator last time? Or is this a car thing and I need to fix something else. The car is essentially acting like I have D+ and DF jumped with D- left empty. Zach |
Dr Evil |
Sep 19 2018, 11:27 AM
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#2
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Send me your transmission! Group: Members Posts: 23,000 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region |
Electrically, the only way this could happen is if the VR is allowing for max voltage at DF which then caused the alternator to juice out max amps. Something that would cause this would be a ground in the feed to the VR indicating that the system was in need (maximum need). But your bulb is working and it couldnt if there was a ground. This happened after a new board? Did I understand that correctly?
I always thought that when VR fried they went to low volts on the DF? |
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