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Old February 8th, 2011, 11:57 PM
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Andrew J. Hutton
1993 Defender 110 200TDI
Join Date: Oct 2007
Location: Ottawa, Ontario, Canada
Posts: 735
Alternator Failure.

About 90 miles west of SLC my alternator appears to have failed and I want to confirm the diagnosis. Basically my amp died and I plugged in the voltage meter again and it was at about 9.5V (ouch) turning off all the electrical draws and it charged the dual batteries but at about .1V/10 minutes and then it got dark and when I turned on the headlights the overall voltage dropped .1 every 2-3 minutes or so until I pulled over and let it idle with the headlamps off and it slowly went up. This of course resulted in driving most of tonight without headlights which wasn't particularly fun.

I'm thinking the alternator is really the only thing it could be. Any other ideas?

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Old February 9th, 2011, 07:37 AM
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1983 110 200tdi 3 door soft top
Join Date: Sep 2010
Location: Fords, NJ
Posts: 1,870
Check the alt connections too

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Old February 9th, 2011, 09:58 AM
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Uncle Douglas
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Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,060
tdi usually needs some rpm to charge-idle is almost nothing. Stock alternator ?
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