Removing heater blower

Hello,

Here is a guide that will walk you through the steps with instructions and diagrams below to show you how on your car.

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

It's under the dash and will require somework to get to it. On 5.4L and 6.8L engines, perform the following:
DISCONNECT THE BATTERY AND ALLOW THE CAR TO SIT FOR APROX 10 MINUTES BEFORE STARTING.

Disconnect the speed control servo connector.
Remove the bolts and remove the speed control servo.
Disconnect the connector.
Remove the blower motor ventilation tube. WARNING
Carefully remove the blower motor so as not to damage the wheel.
Remove the screws and remove the blower motor. WARNING:
If the wheel is to be reused, clean the corrosion from the shaft end prior to removing the wheel otherwise it may break when removed.
Remove the wheel from the blower motor.
Remove the push clip.
Remove the wheel from the blower motor.
Installation is the reverse of the removal procedure. Tighten the blower motor screws.
Remove the RH lower instrument panel insulator.

For Expedition models:
Remove the RH scuff plate.
Remove the RH lower A-pillar trim panel.
Position the carpet aside.
Remove the blower motor, as follows:
Disconnect the electrical connector and position the wire harness aside.
Remove the screws, then remove the blower motor.
Detach the electrical connector (1), remove the screws (2) and remove the blower motor (3)
Installation is the reverse of the removal procedure

I hope this helps.
Joe
Positive feedback is appreciated.

Check the blower motor fues and relay in the underhood fuse box.
Also, try the blower on HIGH to see if it runs them. Let me know how your checks turn out and I'll be glad to assist further if necessary.

You wrote:

Replied on April 29, 2013

i did and all is good I have power to all parts of ac

Are you getting power to the blower motor (in the normal manner)?
If you have to add power (with the 12V wire that you use), this means that the blower isn't getting power normally. This could be a fuse, blower motor relay, switch or a faulty resistor (although a bad resistor still allows the blower to work on HIGH)
Check for power at the blower terminal of the switch when you turn the blower ON.

You need to check the switch in the dashh also try and power up the motor

First thig to check are the fuses, both in car and under the hood. If OK check for power going to the resistor. If OK replace same, if no power, run a self diagnostic, and post the resulting code. Have the engine temp at least 120 degrees, and the internal cabin temp between 40-90 degrees, then turn the key to on, press FLOOR and OFF at the same time, then within 2 seconds press AUTO, the indicator will have a small slash rotating around, the test takes a minute or two, if any codes are store, they will display shortly! To exit self test, press the BLUE, cooler button this also retains error codes, To erase code and exit, press defrost, choose one of these before you power down the system.

Chances are the blower motor is bad. It is located under the dash on the passanger side of the vehicle. What you need to do is gain access to it and check to see if there is power to it when you turn it on. If there is power, the motor is bad.

Also, check the owner's manual to see if you can identify which fuse is for the blower motor. Check to see if it is blown.

Let me know what you find.

Joe

Check the switch and the blower resistor. Test like this:
TEST F: BLOWER MOTOR OPERATES CONTINUOUSLY IN HIGH SPEED

1. Turn ignition on. Press MAX A/C button. Turn blower speed control to LO position. If blower
speed reduces, system is functioning properly at this time. If blower speed does not reduce, go
to next step.
2. Turn ignition off. Disconnect blower motor speed controller 5-pin harness connector C282.
Turn ignition on. Press OFF button on EATC control panel. Measure voltage between ground
and blower motor speed controller harness connector C282 terminal No. 3 (Tan/Orange wire).
See Fig. 12. If more than zero volts exists, repair short to power in Tan/Orange wire. See
WIRING DIAGRAMS. Recheck system operation. If zero volts exists, go to next step.
3. Turn ignition off. Connect blower motor speed controller connector. Turn ignition on. Press
MAX A/C button. Adjust blower speed to LO position. Without disconnecting blower motor
speed controller connector, connect a jumper wire between ground and (backprobe) blower
speed controller harness connector C282 terminal No. 3 (Tan/Orange wire). See Fig. 12. If
blower motor operation stops or slows noticeably, go to next step. If blower motor operation
did not stop or slow, replace blower motor speed controller. Recheck system operation.
4. Turn ignition off. Disconnect EATC module 13-pin harness connector C281. Turn ignition on.
Connect jumper wire between ground and EATC module harness connector C281 terminal No.
23 (Tan/Orange wire). See Fig. 5. If blower motor operation stops or slows noticeably, replace
EATC module. Recheck system operation. If blower motor operation does not change, repair
open in Tan/Orange wire. See WIRING DIAGRAMS. Recheck system operation.

Sound's like you could have a bad blower motor resistor do you have a multimeter to do some test's.