Tach (Electrofan???) Problem
Wonder if anyone of u can help.
I was under the hood one day with the engine running, when I noticed some wires burning.
It turned out to be the wires from the main fan temp sensor, I believe (it is on the engine with 2 prongs).
I swapped out the sensor (USD10) and checked the wiring loom.
I stripped the wires all the way back coz they were burnt internally, up to the point where the wires were good. The I cut off the burnt/shorted portion and spliced some new wires.
Now, fuse #10 blows upon turning of the ignition key switch to position 2. Even with the wires disconnected from the sensor, the fuse still blows.
I lost my tach coz they work off the same fuse.
Is there a relay/switch that could be responsible for this problem?
It seems that the electromagnetic fan is not coming on. It is just freewheeling.
1991 190e 1.8