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. |
Amphicar770 |
Aug 13 2018, 06:09 AM
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#3
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Senior Member Group: Members Posts: 1,191 Joined: 20-April 10 From: PA, USA Member No.: 11,639 Region Association: MidAtlantic Region |
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. Ouch! If you drive older cars, AAA Platinum is a must have. My Jaguar got a free flatbed ride from Virginia to North of Philly about a year ago. |
Unobtanium-inc |
Aug 13 2018, 06:47 AM
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#4
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Advanced Member Group: Members Posts: 2,210 Joined: 29-November 06 From: New York Member No.: 7,276 Region Association: None |
[/quote] Ouch! If you drive older cars, AAA Platinum is a must have. My Jaguar got a free flatbed ride from Virginia to North of Philly about a year ago. [/quote] Yes, AAA is a must if you're driving an old car. Plus you save at hotels and stuff. |
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