190e,1989 CCU fried - PeachParts Mercedes-Benz Forum

fastcar · #1 01-23-2009, 10:10 PM

The arrow points to fried area part of my climate issue

fastcar · #2 01-23-2009, 10:25 PM

http://s100.photobucket.com/albums/m12/turbofrank/?action=view&current=Picture003-3-1.jpg

Rick76 · #3 01-24-2009, 03:17 PM

That transistor controls the auxiliary coolant pump. Your aux pump is probably seized and has destroyed this transistor.
You could replace the transistor (BD435) and its driver (BC517) after you replace the pump. Also install a fuse at the pump so this doesn't happen in the future.

fastcar · #4 01-24-2009, 07:44 PM

Aux water pump died and disconnected but not soon enough to save CCU.
Thanks for info on parts .

fastcar · #5 01-26-2009, 01:52 PM

Quote:

Originally Posted by Rick76

That transistor controls the auxiliary coolant pump. Your aux pump is probably seized and has destroyed this transistor.
You could replace the transistor (BD435) and its driver (BC517) after you replace the pump. Also install a fuse at the pump so this doesn't happen in the future.

Who should i order from? I tried Radio Shack no luck online i found Digikey
thanks

Rick76 · #6 01-26-2009, 04:29 PM

Newark.com or Digikey.com have the exact transistors.

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