I'm having troubles with my blower motor only working in the highest setting and off. in between settings 1,2,3 are not working. Tomorrow I will go to the library and look at the wiring diagram to find out which relay(s) are stuck. We had a cold snap up here in Seattle and I think the mechanical contacts portion of the FAN BLOWER RELAY(s) is stuck. I'm not sure if there are multiple relay(s) or where they are located.(probably near the interior fuse box). After I locate them, I'll pull them out one by one and jiggle them around to see if I can unfreeze them. They're old 12years+ so I'll probably end up replacing the relay. $40. You may want to check your Fan Blower Relay before dolling out the $100+ for a new Blower Motor, not to mention installing that puppy up against the fire wall. I think it's buried pretty good up in the dash. Your fan motor would not work at all if the fuse was blown. Intermittant failure points to a possible intermittant mechanical failure in a relay $, or worse, mechanical failure in the blower motor $$$. Anyway good luck!
Climate control blower motor was the fix. The part cost 441 dollars.
It could be the blower itself as well. The first thing I would do is find the wattage of the blower (dc, I assume.) and connect the ground. Is there power to the unit?
You will need to replace the blower motor control unit located inside the blower motor housing, this part is not the same as the part on standard explorers, it is not the same blower motor resistor.
What model? This probably has electronic Climate control,therefore there isn't a Blower resistor. The blower is controlled by a Blower Motor Module...its mounted on the HVAC case under the hood near/next to the blower motor.
If your blower motor is either not turning itself off, or randomly turning itself on with the ignition off (and you have auto climate control), the problem is the blower control module. Located directly behind the blower motor, it takes information from the climate control, and is in charge of turning the blower on/off. To replace the blower control module, remove the splash shield under the passenger side dash (there's 3 plastic retainers hold it in place). The blower control module is located behind the blower motor, and is held in with 3 bolts. The 2 rearmost bolts (by the firewall) only need to be loosened, and the front one removed. The entire unit rotates down and can then be replaced.
Has the car got climate control ?
I have an 89 Delta 88 and if you have Electronic Climate Control there is a control module located just right(passenger side) of center at the firewall. It is in the same location as the blower fan resister assembly on a car with standard a/c controls.
on fire wall engine compartment
The blower "switch" is the knob or lever that you turn or move to adjust the fan speed. Located right on the climate control, next to the temperature setting.
Defective Blower Motor Resistor Pack.
Rheostat is shot. Replace it. No, I don't know where it is. No, I don't know how much it costs.
ALL u have to do is change ur blower limit switch is going bad.
RH under hood, between blower and evaporator according to diagram. The blower control module is most likely the culprit. It was on my 87 covette ,easy to replace but cost about $150.00
£75 call me BOb 0044 121 772 9928 Birmingham UK is it the 3 pin type?? 2 types climate control type or non climate control type
The blower motor control unit is located on the back of the blower motor. 1. Check fuse. 2. Turn on heat and check for voltage at blower motor. Found voltage replace blower. 3. Check for supply power from the fuse on the red wire going to the blower control unit. 4. Check for a good ground on the black wire on the control unit. 5. Check for control power on the yellow wire from the climate control unit. When you select a fan speed (or the unit selects a speed in auto mode) a voltage that ranges from .4 - 9 volts is sent down the yellow wire to the blower motor control unit. 6. If all these checks are good than change the blower motor control unit. Hope this helps.
I had the same problem and ended up replacing the blower resistor and the blower motor. Although it could be one or the other .. mine was both.
It sounds as if you have either a power or ground problem at the motor.
Loose wire on blower motor? Broken bower motor resistor? Bad blower motor? Loose fuse in fuse holder? Bad fan switch?
your motor resister is bad or might be called the climate control module
It may only be the resistor pack or the resistor module depending upon your climate control type.
Fuse is blown.
there is an electrical short in the blower motor, making wires overheat. replace blower motor
The blower resistor has failed. The resistor is located behind the glove box.
Your blower motor relay went bad. You may also need to replace either the blower motor or one of the climate control sensors. If your blower motor squeals or makes a scraping sound it is going bad and will damage the blower motor relay. JQ
blower motor resistor thermal limiter is blown. Replace the blower motor resistor.