Hey there gang-

My A/C blower seems to be working at a diminished capacity- (not blowing as HARD as it used to) I have all discernable speeds from low to hi, my recirc buttin is ON, all vents are open with no blockage and my blower motor is free of any debris, its just that the force at which it comes from the vents is not as high as it used to be. I spoje to my INDIE and he said its most likely NOT a blower problem, but a "capacitor" problem.

I've done some research and found 3 possible parts, but want confirmation on what each one does AND if there may be consensual confirmation on his diagnosis-
PART: (pics included)

1. Blower Motor Transistor
2. Blower Motor Transistor Resistor
3. Blower Motor Relay

Thanks as usual for all of your help as the hot/humid summer months fast approach TAMPA!!!

 

Transistor.

 

Thanks Savannah! (knew you'd be there for me!) hahaha

 

OKAY- for clarification pusrposes, I did a bit more digging and found that my first pic is for a REAR a/c blower and the second one (transistor resistor) is for the front blower. Hope that helps anyone else.

 

Here's some info from the RAVE - may not be any of these. Normal is speeds 1-30 if blower relay and transistor are good. Last speed takes just the power relay.

The ATC ECU operates a blower relay, power transistor and power relay to run the blower at one of 31 stepped speeds. All speed steps are available in the automatic modes of blower control. In the manual mode, speed steps 3, 10, 16, 22 and 31 are used to provide slow, three intermediate and fast blower speeds. The ATC ECU energises the blower relay and modulates the power transistor to operate the blower for speed steps 1 to 30. For speed step 31, the ATC ECU energises the power relay, which switches the earth side of the blower motor direct to earth, bypassing the

power transistor.

So if all speeds are working, these guys may be in the clear. Do you have any pollen filters on that model that might be gunked solid? Did you drop the blower fan and inspect?

 

Is it noisy at all? It couls also be that the brush on the motor is going bad. You probably will not be able to find a replacement but you may be able to turn it around and us the longer end. I did this with my RR and it worked perfect and I did not need to replace the blower motors just yet. Just another thought to look at.