Last year, I rebrushed the blower motor and added a 80amp bypass which seemed to do the trick ('82 300sd) in getting my A/C to function again. My blower does not work now though will when I power it directly. 80 amp fuse seems fine along with wiring - can anyone offer any ideas why I no longer have fan/blower function. CCU was fine too at the time . . . . any thoughts? Thanks! Getting warm again this weekend!

I hope you mis-typed and you have a 30 amp fuse in there. Can you swap out the CCU with a known good one?

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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

Yes, 30 amp (I think, gulp, might have used an 80 amp as these are the same strip fuse for glow relay, yes -forgot what I used!) I have another CCU and was going to try that next . . . . thanks!

ya... I blinked when I read 80 amp... if it's got an 80 in there, and something bound up... likely the wiring is burned to a crisp...

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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 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Gotta go check now but if I remember correctly, I pulled these fuse boxes from PnP and they were the original 30amp fuses for MB versus 80 -

Sounds to me like you need to go back into the Blower Motor and inspect it and all of the Wireing connections.

I took my Blower Motor apart expecting to find worn Brushes and what I found was a corroded connection where it was crimped onto the wire going to the Brushes (I have a Siemans not a Bosch Blower Motor).

Also there is a square Box with holes in it on the Front Passanger Side Fender Well that is the Resistor for the Blower. That or the Wiring to it could have issues.

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84 300D, 82 Volvo 244Gl Diesel

Thanks, but blower powers up perfectly when energized directly . . . . . ??? Which check resistor wiring next -thanks!