Dysfunctional Heater Blower
 

My heater blower has been putzing out on me... seems to happen only when I use the auto switch control. If I use only the slow or fast setting buttons, the blower keeps working. After some time operating on the auto setting, however, the blower stops blowing. If I turn off the car and wait for about 10 minutes, the blower starts back up again on ignition.

Any ideas on this? What should I check? My guess is that there's a relay on the fritz. Where's the relay located? What's the part called? How much is to replace?

What kind of car is it?

Heater / blower reguator?

Push button control unit ?

Heater Blower Problem
 

It's a 92 300E. I don't think the push-buttons are at fault...

Blower
 

I had a problem like that before and I replaced the regulator, it works great now

Heater Blower Dysfunction
 

Hey Giorriso,

Thanks for the reply! I think I'm going to replace the blower too, because it's making a lot of squeeking noises lately. Is the regulator located below the blower? How much did you pay for the regulator? Is it something done easily enough, especially if I replace the blower at the same time?

Hope I'm not too late Todd....
 

If you haven't already......here's an idea for you. The brushes in the blower moter may be worn down. Mine are/were and temp fixed by shimming behind the brushes. I have to get new ones this next week due to my blower stopped working again but for a while it ran like a new one. Brushes are simple to replace if you have a soldering iron.

Heater Blower Motor Replacement
 

Thanks, Bruce B.

Just to close this thread... I bit the bullet and had the dealer (Keeler, Albany NY) do the work. They replaced the blower motor (part A 000 830 82 08 – $313) and they also replaced the Blower Regulator Switch (part A 124 820 27 10 – $288). The labor ($89/hr) came to around $400.

All I can say is OUCH.

Thanks to all who replied. If I had more patience and time, I would have gone at this myself.... or at least bought the parts online and brought them to the dealer.