Question about 1994 Pontiac Trans Sport

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Erratic Blower Behavior

I've got a 92 Trans Sport (3.8L) with about 102K miles on her. With the heat on and the fan set on any speed, the blower will cut out momentarily but kick back in after a second or two. Any suggestions as to the root of the problem? I was thinking of replacing the blower motor. Thanks for any help. George Same erratic behavior with minor additions, the blower motor only runs on high setting, anything else and motor does not run. resistors maybe??

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The blower motor resistor can cause eratic behavior and the loss of some speeds and not others. I would check this first before replacing the motor.

Posted on Dec 08, 2008

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