2nd Gen Non-Engine/Transmission A/C- Heater Blower Easy trouble shooting / fix

[kentdiesel]

On my 1998 12V the Blower Fan would work great somtimes, other times it would not would at all or graduately slow down and stop after a couple hours of use. After reading lots of posts on what it could be it turned out to be the blower motor.
When it wouldn't run I would open the passenger door, reach under the glove box and give the motor a hit with the palm of my hand, It would instanty start working correctly. Replaced motor with new one from AutoZone, $46.00 and problem solved and passengers stopped lauging at me.

So, if your having A/C-Heater Blower trouble maybe this post will help.
Kent

 

[GAmes]

For less money you can get an OEM from any salvage yard. Many years of 1500s-3500s will work.

 

[pgleavitt]

I've been told that about the same time your fan goes south, the porceline resister(2 screws hold it near motor with electrical plug attached) is not far behind. My fan would run on high speed and then barely at all. The porceline part had a crack in it.

 

[kentdiesel]

For less money you can get an OEM from any salvage yard. Many years of 1500s-3500s will work.

Salvage yard for a blower motor?? , ROTFLMAO. Your salvage yard situation has to be alot different than mine. For me, I would of spent a least half an hour calling around and then I would of got: bring yours and we"ll try to match it up. After driving 30-45 min they wouldn't have one or the one they dug out of there pile would look far worst than mine(humitity here = rust and corrsion). I'd be lucky if it was less than a new one and there wouldn't be any return on a electrical part. Also, they act like there doing you a favor by letting you in the door and talking to you. That"s the salvage yard situation here, absolute last resort. Alot of them have went out of business, wonder why?

2nd option: Drive 5 min to Auto parts store, get new one with warranty , have problem solved in less than 40 min.

The reason I started this post is to help people find there problem, not where to get parts.

 

[GAmes]

Your salvage yard situation has to be alot different than mine.

2nd option: Drive 5 min to Auto parts store, get new one with warranty , have problem solved in less than 40 min.

The reason I started this post is to help people find there problem, not where to get parts.

Obviously. I guess I should have specified u-pull-it yards.

The yard closest to me will provide a warranty on electrical parts for a couple dollars, so a motor and resistor will cost $12 instead of $10.

The reason I posted was to provide another source for parts. I like OEM better than the Chinese made stuff normally found at parts stores.

 

[Lazy-Boy]

Regarding the failure of these blower motors, could a weak air flow be a symptom of a bad motor? Mine's never quit altogether but it doesn't seem to push much air through anymore. It's been that way for years and I've just lived with it.
Maybe I'll try changing the motor to see if I get more air flow. But since it's never quit altogether, that may be a waste of time.

And I thought that I had read somewhere here that there is a screen that is buried deep in the dash that could get clogged too. Maybe it was to keep debris out or something. Or it's just for the A/C??? I can't remember now.
Anyone familiar with any type of screen or filter in the duct work of this year model that could be hampering air flow?

Thanks

 

[GAmes]

I suspect that the squirrel cage that the motor spins is full of debris and the heater core is clogged with debris as well. If you remove the motor the fan (squirrel cage) is easy to clean. The heater core, a bit of work. I duct tape a small hose to the end of my shop vac hose in order to reach to the bottom of the plenum through the hole where the fan mounts, and vacuum as much dirt, leaves, etc out as I can. Then I spray some simple green onto the core and let it soak. I flush it with low volume, low pressure water. If you don't over power it the drain for the A/C will accommodate the water. If the core is really dirty you might have to soak it with something like simple green and flush more than once. Don't use acidic cleaners like purple power, they will attack the solder of the core.