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#1
10-14-2010, 11:35 PM
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So is my alternator dead?
Driving today to work in my 1987 300D the red battery light came on, coming from work car still started fine but on the way home ABS light came on and radio died. The lights became dim...when I got home I could not start the car already. Belt seems to be fine but the alternator is soaked in oil from the rubber turbo boot-blow by
 . Before I order the alternator anything else to consider? Thanks! Just got underneath the car cleaned the plug in connectors, started up, same deal- red battery light, when RPM go up the red battery light dims.
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1987 300D 2005 E320 CDI Last edited by BLACKCDI; 10-15-2010 at 12:34 AM. 
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#2
10-15-2010, 01:31 AM
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You need to fix the oil leak first !!
It may be that the oil has got on the brushes & stopped contact. It may be that the oil has killed a couple of diodes or the voltage reg. If the oil leak is that bad you may just destroy a new alt in a short time.
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Grumpy Old Diesel Owners Club group I no longer question authority, I annoy authority. More effect, less effort....  1967 230-6 auto parts car. rust bucket. 1980 300D now parts car 800k miles 1984 300D 500k miles  1987 250td 160k miles English import  2001 jeep turbo diesel 130k miles  1998 jeep tdi ~ followed me home. Needs a turbo. 1968 Ford F750 truck. 6-354 diesel conversion. Other toys ~J.D.,Cat & GM ~ mainly earth moving
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#3
10-15-2010, 09:17 AM
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Might try a regulator first.
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 Gone to the dark side - Jeff
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#4
10-15-2010, 09:20 AM
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big can of brake spray...
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 560SL convertible 1987 190D 2.5-5SPEED!!!  1987 300TD 2005 Dodge Sprinter 2500 158"WB 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#5
10-15-2010, 09:30 AM
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try a new voltage regulator before you condemn the alternator. They can be had fairly cheap if you shop around and it won't take more than five minutes to install.
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#6
10-15-2010, 09:24 PM
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Thanks guys, just fixed the problem..took out the regulator it was covered in gunk, cleaned it with carb cleaner. The brushes were almost non existant, I polished them with some steel wool and cleaned contacts. Put it back in and my charging problem is fixed! I have a new voltage regulator on order now.
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1987 300D 2005 E320 CDI Last edited by BLACKCDI; 10-16-2010 at 12:41 PM.
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#7
10-15-2010, 10:49 PM
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Always good to hear when it is a simple fix.
__________________
I'm not a doctor, but I'll have a look.  '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]
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