89 560SEC blower is running fine and suddenly dies. Checked fuses... all seem good, removed and checked connections on relays, some dirty, cleaned and reinstalled. Still wil not blow.
Thanks in advance to all.
Steve

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?

__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician

[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

__________________
80 240D 440K (sold)
82 300SD 289K (sold)
85 300SD 295K (sold)
84 300D Turbo 188K (sold)
89 560SEC 135K (sold)
88 300SEL 139K (sold)
85 300TDT 146K (sold)
90 560SEL 127K "Black Moose"
89 300SEL 115K "Big Moose"
79 450SEL 145K "Old Moose"
84 380SL 103K
81 380SLC 145K
99 C230Kompressor 105K

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.

__________________
86 560SL
With homebrew first gear start!
85 380SL
Daily Driver Project

http://juliepalooza.8m.com/sl/mercedes.htm

Strife...

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

Steve

__________________
80 240D 440K (sold)
82 300SD 289K (sold)
85 300SD 295K (sold)
84 300D Turbo 188K (sold)
89 560SEC 135K (sold)
88 300SEL 139K (sold)
85 300TDT 146K (sold)
90 560SEL 127K "Black Moose"
89 300SEL 115K "Big Moose"
79 450SEL 145K "Old Moose"
84 380SL 103K
81 380SLC 145K
99 C230Kompressor 105K

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

Steve

__________________
80 240D 440K (sold)
82 300SD 289K (sold)
85 300SD 295K (sold)
84 300D Turbo 188K (sold)
89 560SEC 135K (sold)
88 300SEL 139K (sold)
85 300TDT 146K (sold)
90 560SEL 127K "Black Moose"
89 300SEL 115K "Big Moose"
79 450SEL 145K "Old Moose"
84 380SL 103K
81 380SLC 145K
99 C230Kompressor 105K

DAMN FUSES GET YA EVERY TIME!!


Smokie

Finally, after checking every fuse and relay, etc and soforth the reason the car wouldnt start and there was no power to the fuel pumps was the 2 red wires that connect to the positive side of the battery. The smaller nut thats secures the two wires was loose and not making contact. Tightened up the nut and she started right up. Thanks to everyone who helped with my electrical issues. I now know 10 times what I used to know and that is 1% of what you guys know.

Thanks again

Steve Katz

__________________
80 240D 440K (sold)
82 300SD 289K (sold)
85 300SD 295K (sold)
84 300D Turbo 188K (sold)
89 560SEC 135K (sold)
88 300SEL 139K (sold)
85 300TDT 146K (sold)
90 560SEL 127K "Black Moose"
89 300SEL 115K "Big Moose"
79 450SEL 145K "Old Moose"
84 380SL 103K
81 380SLC 145K
99 C230Kompressor 105K