Blower motor stops/starts from vibration

[frost04]

Okay, so I think I have read all of the past posts regarding problems with blower motors, resistors, etc. I don't recall reading anything about the blower motor stopping/starting due to vibrations on the road (railroad tracks, potholes). If the blower stops while drivng, I can usually lean over and lightly tap on the dash below the glove box and it will start up again, but when i hit another bump it will stop again. My 04 GT has been doing this for several months now, and it's driving me crazy. I replaced the resistor this past weekend and still have the same problem. I figured it was unlikely to solve the problem, but it was fairly cheap and known for going bad anyway. When I was replacing the resistor, I could tap near or on the motor housing and make it stop or start every time. I did also try to weasel my fingers around to check for any obvious loose connections, but didn't notice any. Does this mean the motor itself is bad or do I have a loose wire somehwere that i couldn't locate??I know this is a long-winded post, but I am at a loss for what to do next. Please help!Thanks,Scott

[joatmon]

some people have had that kind of problem before, some of them fixed it by replacing the blower motor, others fixed it by replacing the brushes in the blower motor.

[frost04]

Thanks! I found some more information about this issue after more searching. I changed the motor and all is well now!

[techren]

Recently had mine out to clean the fan. I tipped it over and a lot of powderized rust fell out. Had I been able to get both the screws out I would have done a proper cleaning. So I imagine my blower motors days are numbered. Glad you got yours replaced OK. Where did you get the replacement from?

[frost04]

I would agree that your motor's days are probably getting numbered now. As you know, all that rust implies moisture having been in there. I have read of others having that problem. After alot of searching and price comparisons, I bought my motor (Delphi brand) from Amazon.com. They had the best price and free shipping at the time.Changing the motor was much easier than I expected.

[marchse]

It may be some connection failure or the problem may be due to some aged components, better check with your mechanic. Power Plant Development