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Old 01-19-2009, 09:39 PM
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Deep3375
 
Join Date: Jan 2009
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Posts: 12
Charging problems

I have a 86 300e I just had the alternator rebuilt and its was fine after I put it on now my anti lock brakes light comes on and the car dies

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Old 01-20-2009, 12:45 AM
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Drone aspiring to Serfdom
 
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Alternator

'Can you get it to run long enough to put a multi-meter on the Battery terminals
to check and see if you're getting 13 to 14.5 volts with the engine On?

If not ,you'll have to take it off (AND back).
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Old 01-20-2009, 02:23 AM
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First suspect is a blown fuse on top of the OVP relay.
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Old 01-20-2009, 07:30 AM
mak mak is offline
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charging voltage

[QUOTE=compress ignite;2084065]'Can you get it to run long enough to put a multi-meter on the Battery terminals
to check and see if you're getting 13 to 14.5 volts with the engine On?


I have around 13,5V on my generator ,but it seems inadequate to cope with the blower.headlights and wipers running ,soon the battery starts to go down .the ABS light coming on , a higher capacity generator?
mak

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Old 01-20-2009, 07:56 PM
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Location: PA
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The OVP was fine and I ran the car without the neg lead and it still ran so I have an issue with the belt tension how do you tighten it
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  #6  
Old 01-21-2009, 01:18 AM
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You are on the right track. Ensure you have the alternator belt tight and are charging 14 volts or so. Also, have a good battery, not marginal, fully charged. On my 88 300E, with a marginal battery, it would start and run if I held the gas for 2000 rpm or so. The ABS light would be on and it would die if I let off the gas. After a period of time it would "click in" with an rpm jump and extinguish the ABS light (OVP relay action ?), and it would be good to go and not die. A new, hot battery and frequent use avoided the condition.

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