The alternator replacement thread, Fixed! |
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The alternator replacement thread, Fixed! |
VaccaRabite |
Aug 12 2018, 07:07 PM
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#1
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En Garde! Group: Admin Posts: 13,444 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Waiting on the side of the road for a flatbed to take me home.
Engine ran great. Charging system not so much. Driving along. Lights started going dim. Car started bucking. Only 5 miles to home but it wasn’t going to make it, and no shoulders to pull over safe on the little farm roads. So I pulled into a spot I knew of and shut it down and parked it and now I wait. McMark had said earlier he wasn’t sure about the charging system. But the alt light was not on and no issues before now. So. What’s the alternator I need to buy? Maybe a new VR as well? I guess I should test the battery and make sure it’s okay too. Zach |
VaccaRabite |
Sep 8 2018, 05:17 PM
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#2
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En Garde! Group: Admin Posts: 13,444 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Goddamn happy dance.
14 volts at idle. 14 volts at 4K rpm. Using either of the single piece solid state VRs. Using the pig tailed solid state VR showed 13.5v. And the mechanical VR I got from Bruce was dancing from 13.5 to 14V. It was a grounding issue. I went back through the grounds, recleaned them, and added a 10 gauge wire from the alternator case to the chassis ground under the relay board. (I was doing that as you posted Spoke). Damn, that was a tough one. Still don’t know why the grounding issue was happening, as the meter said I was golden. But, clearly, the meter was wrong. Zach |
ClayPerrine |
Sep 9 2018, 05:34 AM
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#3
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Life's been good to me so far..... Group: Admin Posts: 15,465 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
Goddamn happy dance. 14 volts at idle. 14 volts at 4K rpm. Using either of the single piece solid state VRs. Using the pig tailed solid state VR showed 13.5v. And the mechanical VR I got from Bruce was dancing from 13.5 to 14V. It was a grounding issue. I went back through the grounds, recleaned them, and added a 10 gauge wire from the alternator case to the chassis ground under the relay board. (I was doing that as you posted Spoke). Damn, that was a tough one. Still don’t know why the grounding issue was happening, as the meter said I was golden. But, clearly, the meter was wrong. Zach That's great!!! I never really thought about it before, but adding a heavy brown wire to the alternator harness and running it back to the ground point at the relay board is a really good idea. (IMG:style_emoticons/default/idea.gif) |
bdstone914 |
Sep 9 2018, 08:53 AM
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#4
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bdstone914 Group: Members Posts: 4,522 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
Zach,
Are your alternator mounting brackets painted of plated ? I have heard that painted brackets interfere with the grounding. Is that using the alternator and VR I sold you? Bruce @vaccarabite |
VaccaRabite |
Sep 9 2018, 02:50 PM
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#5
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En Garde! Group: Admin Posts: 13,444 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Zach, Are your alternator mounting brackets painted of plated ? I have heard that painted brackets interfere with the grounding. Is that using the alternator and VR I sold you? Bruce @vaccarabite I’m fairly sure this was the issue. All the tins and my fan shroud were powder coated. The studs were taped off, but the slider part of the shroud wasn’t. So I’m guessing there was resistance there. What is confusing is how my meter was showing no resistance. Granted, I was measuring this with the engine off, and maybe that was the problem. It would start showing a little resistance, maybe an ohm, but then would quickly go to 0.000 resistance. And now I have a collection of spare voltage regulators if I ever need them. Lol. Zach |
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