QuestionQUESTION: Air conditioning vent fan or blower stopped working.
what could be the problem?
ANSWER: Ok, I need to know a little bit about the symptoms and Car.
Is the car Base/SL/VR-4?
Do you have the electronic climate control (with LCD screen and Auto button?), or the switchable system with switches/knobs/ and buttons?
Does the turning the fan up from off do anything whatsoever?
Do you have heat or no? A/c or no?
Is nothing coming out of the vents whatsoever?
Are the A/C or Re-Circulate lights stuck on or off?
---------- FOLLOW-UP ----------
QUESTION: The car is an SL.
electronic climate control, yes LCD with auto button.
turning the fan up from off does nothing.
heat and A/C appear to be working.
nothing comes out of the vents.
The A/C and Re-Circulate lights are not stuck.
UPDATE, I changed the resistor that fits on the left and
behind the glove box. I turn on the A/C and it comes on only
after I tap the bottom of the blower, low speed only
even after I set it to high on the electronic control.
Could it be the blower motor relay (HI)?
AnswerOk so the resistor has been changed. You say that it does blow a little after you tap on the blower itself? If that is so then its got to be the Blower Motor... or its electrical connection has a bad ground.
I'm looking at the service manual's diagram of the Heater system. Other than the fuse there are only 5 physical possibilities. Heater relay, blower motor, blower motor relay, resistor, and the blower switch. We know the switch is ok, because it changes on the screen when you touch it. The resistor you changed. The fuse is good and the relay is working because if you tap on it it does come on a little bit. I think that the electrical connector on the blower motor may have loosened causing a ground problem or the blower motor itself has failed. Its a tough change kinda, but you can take it apart and make sure the wiring is snug and the ground is ok by probing. If both are ok, you know the Blower motor itself has died. It does happen, unfortunately.
You could test the relay (hi) by swapping it out temporarily with another relay there... I think that the low relay may have the same numbers. Then just give it a try.
