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 |
Spoke |
Aug 12 2018, 09:04 PM
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#2
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Jerry Group: Members Posts: 6,978 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
I wouldn't put in a new alternator until you know what is wrong with the charging system. Like Mark said, check all grounds and battery connections.
Charge the battery, remove the VR, short DF to D+ at the VR connector. This will put the alternator in maximum charge condition. Start the car and measure the battery voltage. If it is more than 15V, then the alternator is ok. Don't do this test too long as it applies maximum stress on the alternator and battery. If you don't see 15V or so, the VR may be suspect. I know the feeling of a Porsche riding on a flatbed. This ride from Pittsburgh to Allentown a couple of weeks ago cost me a cool $1000. |
bdstone914 |
Aug 13 2018, 08:10 AM
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#3
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bdstone914 Group: Members Posts: 4,522 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
I wouldn't put in a new alternator until you know what is wrong with the charging system. Like Mark said, check all grounds and battery connections. Charge the battery, remove the VR, short DF to D+ at the VR connector. This will put the alternator in maximum charge condition. Start the car and measure the battery voltage. If it is more than 15V, then the alternator is ok. Don't do this test too long as it applies maximum stress on the alternator and battery. If you don't see 15V or so, the VR may be suspect. I know the feeling of a Porsche riding on a flatbed. This ride from Pittsburgh to Allentown a couple of weeks ago cost me a cool $1000. AAA Extended plan cost about $160 a years and well worth it. You get two tows per year up to 200 miles each . Did that after a 25 mile tow cost $125 with towing "insurance". But I see that is is closer to 300 miles from Pittsburgh to Allentown. |
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