Blower dies
 

blower fan headaches
 

Based on my recent problems with blowers and fans, first check blower motor leads to direct 12 volt battery hookup. This will tell you if the motor is still working. Go from there. I found both motors on 77 450sl (aux fan and blower) were gone, and replaced with junkyard parts that are presently working fine. (thanks to all the help out there especially arthur. Regards, Abe G

The blower cnnection is easily accessible by removing the underpanel right side of dash. Either verify with a voltmeter or substitute 12v

There are no relays involved. The controller is pretty good on the 126 and hardly ever goes bad. Did you check the strip fuse?

Blower dead
 

[B]Checked strip fuse, (next to fuse box and plugs into a socket like a relay, has 2 30A fuses), checked all fuses for power thru, still no power to fan motor. Used volt/ohm meter and have the lesser voltage at fan connection but no 12V. Did blue wire ground scenario, no fan. Everything now says switch to me. How do I remove and troubleshoot switch. Where does the voltage to fan speed switch come from? I hear everyting energizing when climate control is turned on, no fan. Everything everyone has come up with so far has been in great detail and really makes the troubleshooting easy. Wiring direct to battery and running ground to blue wire connection blower blows great. HELP ITS HOTTT!
Thanks
Steve

On a 107, this can be caused by the ignition switch. Don't know if this is wired similarly but might be worth a look. Jiggling the key on mine caused the blower to go on and off until the electrical portion of the switch was replaced.

Strife...

Thanks, I wiggled that puppy all over with no change. Thanks

Steve

Strip fuse
 

It was the stip fuse after all. Couldnt see the break. Many thanks to all

Steve :) :) :) :) :)

DAMN FUSES GET YA EVERY TIME!! :mad: :mad: :mad: :mad: :mad: :mad:


Smokie

Done Deal