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#1
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My '85 300D has been blowing aux fan fuses. I replaced the fuse (16a) and the fan runs, but now the fan just doesn't come on. I saw the trick with grounding the temp switch wire to make the fan come on, but my question is:
Was the temp switch potentially causing the blown fuse or should I be looking at replacing the fan motor (or relay) to really fix the problem???? Thanks |
#2
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Rusty the switch is only a trigger for the RELAY that controls the motor. THE only thing that should blow the fuse is the MOTOR itself.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#3
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Remove the battery and/or windshield was reservoir and check the wires leading from the fuse bosx to the fan. I had a similar problem in my '76 230 and found out that the wire (down around the headlamp area) was frayed and chewed out (from what I don't know, an animal maybe or just rust) and then I cut out the bad parts, spliced the wire and used butt connectors to re-attach the wire, so it was'nt exposed. This worked fine.
Good luck, AARON ROCHARD 1976 230.4 W115 |
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