Any time I am on the freeway and I push the accelator pedal to the floor depressing and activating the kickdown switch the same fuse immediately blows. I don't recall offhand the number of the fuse but it is the one that controls the blower along with a bunch of other things.

Replace it and all is normal. Nothing else seems to blow the fuse other than the kickdown switch.

Any ideas?

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2009 ML320 Bluetec
1985 300CD
1981 300TD

Past Mercedes
1979 300TD
1982 300TD
2000 E320 4Matic Wagon
1998 E430
1984 300SD
1980 300SD

Disconnect the kickdown switch and test it.

Also check for wires getting pinched under the accelerator and in the linkages.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Sounds like you've got a short in the kickdown switch or cable.

I know from banging my head against a wall for some time that the kickdown switch is on the same fuse as the blower motor.
Since it only happens when you kick it down, I'd guess you just need to replace the switch itself, which is cheap enough. But it's easy enough (if oyu don't mind reaching under there) to test for resistance on the wiring to the switch. I disconnected mine a while back, and use my hand to manually downshift with the automatic trans selector.

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