Blower eater!!

[gbusby]

I am trying to help out a friend who has a 92 E350 that eats blowers for dinner. We are currently replacing the 5th bad blower. Granted the van is 14 years old but I have never replaced a blower twice in a vehicle let alone replace 5 of them. Would it be worth bypassing the electrical system and wiring a new switch to the blower??

[butch h]

What fails on the blower?Is it electrical,or mechanical?

[gbusby]

Electrical failure, the motor burns out.

[rhandwor]

I would start by monitoring the voltage, resistance in the line will drop voltage. This will cause the motor to overheat.

[butch h]

I believe these motors are powered through a diode/resister switch that allows them to run on lower voltage (blower speed).You might have a poor/intermittent ground,or a mechanical (obstruction/drag) problem.

[mrmechanic]

test