Voltage Regulator?

rolaes62 · 10-28-2009, 11:29 PM

Hello all,

I think my voltage regulator is going out, Is it possible to just change out the regulator or do I need to buy a new alternator? I've done some baseline troubleshooting and everything is pointing towards the voltage regulator. (I won't go into details).

Any inputs would be appreciated.

Thanks in advance,

Rusty

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MarcusF · 10-29-2009, 03:59 PM

Yes. The regulator is a normal wear part and can be replaced. This may be of assistance.

rolaes62 · 10-29-2009, 05:56 PM

Cool,

Thanks Marcus. I thought it was possible, But I wanted to make sure and ask you experts. You guys haven't steered me wrong yet.

Regards,

Rusty

Wow thanks for the article!

gregory13lil · 10-29-2009, 07:06 PM

MARCUS ALWAYS HAS THE ANSWERS!!!

Greg

MarcusF · 10-30-2009, 12:34 AM

I have some answers, but WILLIAMS707 (what's the 707 stand for?) has THE answers!

LED Wedge T10 Park Lights

VIPclk320 · 10-30-2009, 12:37 AM

I think i may have the same problem. when i'm behind a red light and i press on my window switches even if the window is already down my car shakes a bit, is this what the problem is? thanks marcus in advanced.

928Benz · 10-30-2009, 03:03 PM

I too may be experiencing simlar issue. When stopped at red light, my interior dash lights seem to dim and car seems to want to stall out. I usually prevent this by holding the brake and giving a little bit of gas to keep the rpms up. If i try to roll windows up or down, the dash lights also dim. Do you think voltage regulator is suspect for these symptoms? Thanks in advance for your input.

onlinealias · 10-30-2009, 06:24 PM

Quote:

Originally Posted by 928Benz

I too may be experiencing simlar issue. When stopped at red light, my interior dash lights seem to dim and car seems to want to stall out. I usually prevent this by holding the brake and giving a little bit of gas to keep the rpms up. If i try to roll windows up or down, the dash lights also dim. Do you think voltage regulator is suspect for these symptoms? Thanks in advance for your input.

In your case, it is probably just the battery...I would start there, then move on to the voltage regulator.

MarcusF · 10-31-2009, 01:38 AM

VIP and 928, using option number 24 of the AC diagnostics will tell you how much voltage you've got at various times. That's one way of determining if the voltage regulator is worn out. If it drops to 12.anything (while running), that's low for my car - and the ECU will do wacky things with low voltage.

A rough idle may be motor mounts. Those are normal wear items.

10-29-2009, 03:59 PM	#2
MarcusF MBWorld Fanatic! Join Date: Apr 2005 Location: SCV SoCal Posts: 1,705 Drives: FIA approved Pumas	Yes. The regulator is a normal wear part and can be replaced. This may be of assistance. __________________ Mercedes-Benz spec page Signal to Noise

10-29-2009, 07:06 PM	#4
gregory13lil MBWorld Fanatic! Join Date: May 2006 Location: Fort Hood, TX Posts: 1,287 Drives: 2000 CLK430	MARCUS ALWAYS HAS THE ANSWERS!!! Greg __________________

10-30-2009, 12:34 AM	#5
MarcusF MBWorld Fanatic! Join Date: Apr 2005 Location: SCV SoCal Posts: 1,705 Drives: FIA approved Pumas	I have some answers, but WILLIAMS707 (what's the 707 stand for?) has THE answers! LED Wedge T10 Park Lights __________________ Mercedes-Benz spec page Signal to Noise

10-30-2009, 12:37 AM	#6
VIPclk320 Super Member Join Date: Apr 2005 Posts: 506	I think i may have the same problem. when i'm behind a red light and i press on my window switches even if the window is already down my car shakes a bit, is this what the problem is? thanks marcus in advanced. __________________

10-31-2009, 01:38 AM	#9
MarcusF MBWorld Fanatic! Join Date: Apr 2005 Location: SCV SoCal Posts: 1,705 Drives: FIA approved Pumas	VIP and 928, using option number 24 of the AC diagnostics will tell you how much voltage you've got at various times. That's one way of determining if the voltage regulator is worn out. If it drops to 12.anything (while running), that's low for my car - and the ECU will do wacky things with low voltage. A rough idle may be motor mounts. Those are normal wear items. __________________ Mercedes-Benz spec page Signal to Noise Last edited by MarcusF; 10-31-2009 at 01:41 AM.

10-29-2009, 05:56 PM	#3
rolaes62 Junior Member Join Date: Feb 2008 Location: Coolidge, AZ Posts: 40 Drives: 2001 C320, 1999 clk320, 1997 E320, 1993 300e & 2005 F150 Supercrew	Cool, Thanks Marcus. I thought it was possible, But I wanted to make sure and ask you experts. You guys haven't steered me wrong yet. Regards, Rusty Wow thanks for the article!

10-30-2009, 03:03 PM	#7
928Benz Junior Member Join Date: Oct 2005 Posts: 38	I too may be experiencing simlar issue. When stopped at red light, my interior dash lights seem to dim and car seems to want to stall out. I usually prevent this by holding the brake and giving a little bit of gas to keep the rpms up. If i try to roll windows up or down, the dash lights also dim. Do you think voltage regulator is suspect for these symptoms? Thanks in advance for your input.

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