E-Class (W124) 1984-1995: E 260, E 300, E 320, E 420, E 500 (Includes CE, T, TD models)

Charging Problems

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Old Aug 6, 2009 | 10:53 AM
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1986 300E
Charging Problems

I have 2 86 300E's and both of them have problems charging. I have been through the alternator and find no problem, but it seems to go only for a few miles and then runs out of juice. Oh by the way the battery is brand new on both cars as well. Any suggestions will be appreciated.
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Old Aug 6, 2009 | 12:02 PM
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appatula's Avatar
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From: Connecticut, New Haven
95' AMG SeeThreeSix
After the car is started, if you take the leads off of the battery (so it is disconnected) does the car still run? Maybe your voltage regulator is shot? Take voltage measurements off the battery with it running, not running, and running without the battery connected and post back.
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Old Aug 10, 2009 | 01:59 PM
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1986 300E
ok here is the deal, i started the car and pulled the batt. terminal off, no go car died rright away. took the other regulator out of my other car and same thing. is the car supposed to run off the alternator alone when batt. disconnected?
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Old Aug 10, 2009 | 04:35 PM
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lots of cars
Car is supposed to run off the alternator. You need a new alternator..
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