Replacing Voltage Regulator - 1993 2.3 - Mercedes-Benz Forum
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#1 (permalink) Old 06-02-2009, 02:12 PM
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Replacing Voltage Regulator - 1993 2.3

Hey guys....quick question. Do I need to remove & unplug this black cover on the alternator back to replace the voltage regulator? Or is the voltage regulator not in my line of sight from above where I'm standing?

Here is a pic of what I'm looking at when I'm looking from above. Any help is appreciated. I'm looking to complete this task within the next couple of hours when the engine cools.


Mike

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#2 (permalink) Old 06-02-2009, 05:33 PM
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Mercedes Voltage Regulator Install

jack the car up of you need room and crawl under!

Last edited by jsbarks; 06-02-2009 at 05:37 PM.
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#3 (permalink) Old 06-03-2009, 05:42 PM
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How did you make out on replacing the voltage regulator on your 93?
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#4 (permalink) Old 06-04-2009, 12:17 PM
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I didn't. I decided to put it off for another day.

Mike

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#5 (permalink) Old 06-04-2009, 03:33 PM
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Thanks for getting back. I knew you you change the regulator in the older alternators, but did'nt know if it could be done on a 93, with that black plastic cover. I'm at 200,800 and probably due for a regulator.
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#6 (permalink) Old 06-10-2009, 04:08 PM
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I got nervous with my mileage so I replaced my regulator. I dropped the alternator to make the job easier. The black cover has to come off to get to the regulator. Just take your time removing the cover so you don't break the tabs. I put a new belt on while everything was apart. My 200,000 mile regulator had one contact (brush) that was definetly short. I also dis-connected the battery before I started. Gota keep this junk runnin!
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#7 (permalink) Old 06-13-2009, 08:06 PM
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Ended up taking my car to a reputable shop since I didn't have much time to perform this task due to work & whatnot.

The shop replaced the alternator & voltage regulator. All is fine for about 3 days, then this afternoon, while I was driving on the freeway going about 65MPH with the A/C on (it was about 100F in Dallas today) the ABS light faintly comes on. As soon as I turn it off, the light goes off. I could only endure the heat for about a minute, so I turn on the A/C again and within several seconds, the ABS light comes on again.

I park, do my errands, and come back out to a dead car. I have to get it jumped before I'm on the road again. Any idea what this problem may be??

Mike

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1996 Mercedes E320
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#8 (permalink) Old 06-14-2009, 05:17 PM
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Your going to have to run it by that shop so they can check out the alternator. Does'nt sound like its charging. I mounted a small digital voltage guage in my ash tray years back. Mines charging identical to the old regulator.
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#9 (permalink) Old 06-16-2009, 06:43 PM
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"Charging System Failure"

Took it to 2 shops, they tested the battery and alternator....both told me the same thing. They didn't exactly know what the problem was and I was not prepared to leave it at the shop to get it fixed. Has anyone else had a similar problem occur?? What does "Charging System Failure" mean?? I already have a new alternator and relatively new battery. Both tested fine.

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#10 (permalink) Old 06-16-2009, 08:08 PM
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what symptoms was yoiur car having again to make you think a charging issue?
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