resistor to blower?

if tapping it caused it to work again then its either failing or the wiring to it is loose or damaged, either way something will need replaced because it will only get worse.

Heater problem
1999 Lincoln Town Car V8 Two Wheel Drive alot miles

these are limos and we are going threw blower motors on a 1999,2000, and a 2001...replaced them with after market ones and it seems as if we are not getting the right speed out of them...do these cars have blower resistors?? thanks

if you have manual heating, then yes they have resistors.

if you have auto heating, then they have a power amplifier control unit

[do these go bad and how do you replace them?
easy?? thanks

[quote:2d153e603e="buddycraigg"]if you have manual heating, then yes they have resistors.

if you have auto heating, then they have a power amplifier control unit[/quote:2d153e603e]

you didn't answer my question so i dont know how to respond.

how can you tell if has auto heat....these have auto options and manual...??? comfuse

The blower motor was intermittant . now it doesn't work on heat or A/C. I assumed the motor was bad , but I jumped it to the battery first and it works fine.
I checked the power lead to the blower and find 5 v on high setting. When I have someone press the control for slower fan speed, the volts drop about 1 volt each time. I can't find a book for my year Towncar. I do have a manual for 87 to 97. It talks about checking the blower motor resistors and shows a picture, on the older ones being on the fire wall. I couldn't find any.
Could the probem be in the control module on the dash? Or.. could I have a loose connection? Either in a wiring connection or onto the control module itself?
Would that be likley to cause a voltage drop to 5 volts and why it was intermittant?

if the heater control head has an AUTO option, and you can just set it to whatever temp you want, then it has auto heat.

Hi Tom Richardson, Welcome to 2carpros and TY for the donation Your probable causes here could be the blower motor speed controller or the electronic automatic temperature control module behind center of dash

well if has auto heat and the blower is only blowing partially ...new blower 2nd this year...what would keep it from running full speed? thanks for all your help this has been a nightmare MARK

Thanks Rasmataz!
I still haven't resolved the problem on the blower motor issue. I did replace the electronic temperature contriol module in the center of the dash, to no avail!
Where do I find the blower motor speed controller?
Also, bear in mind. I get a 5 Volt reading from the pigtail that goes to the blower motor when the fan is on high, as the temp is selected lower, the voltage drops about 1 volt each time. The blower runs fine when jumped to the battery.
Also, is there a blower motor resistor in this year vehicle?
Before it quit entirely, the blower was intermittent.
Thanks for your help!
PS I imagine the intermittant running of the blower could be that it ran somewhat on the lower voltage sometimes.

we have now determined that you do have auto heat in these cars.

so we know which troubleshooting flowchart to follow.
but it's 1am here. and i'm going to bed.

I'll start digging back in to this around 9 PM tomorrow.

The blower motor speed controller is in right rear of engine compartment on evaporator. Note: the speed controller takes the place of the blower resistor. Notes REMOVAL

Disconnect the wire harness connector. Drain the cooling system below the heater hoses.

Disconnect the heater hose.

4 Remove the screws and remove the blower motor speed Control. https://www.2carpros.com/kpages/auto_repair_manuals_alldata.htm

thanks late here as well and i will check back ...hope you have a good day! MARK

Thanks
Question before I start.
does the blower motor speed controll sit in an air plenum? or is it in the coolant?
So... Is it necessary for the coolant to be drained down to change the ms control?

test K part 1
turn ignition to run position (engine off)
Press MAX AC button.
Adjust EATC panel blower speed to midway between high and low speed.
Verify the the motor is blowing.
ADjust EATC panel plower speed setting to high.
If the motor speed increases with the setting changes, the system is operation normally. if blower speed does not change properly, we'll do the next test.

That is what alldata auto references for removal procedures I've never done one on this vehicle-sorry

any news???

Heater problem
1999 Lincoln Town Car V8 Two Wheel Drive

About a week after I got my car I hit some bumps and my fan went out, kicked back in and then out again. The blower motor was tested when taken out of the car and it worked fine. The car produces AC/Heat just fine but will not blow it out on eather setting (bi-level, dash vents, etc.) or speed, totally dead. I have been told the blower motor resistor is a very common problem. I just want to ask anybody on here!!

Even with the blower motor having tested out good after the problem occured. I did put another one in after everything went south on me, this is why I thought it was ok. I have also heard a possible bad ground wire.

Could be a bad ground or blower motor relay problem or the blower control switch

I have been hearing possible bad swich too. AS long as its not a bad ground wire I think i can do it! I don't have the know how to search for a bad ground.

Wile we are at it, where might the swich be located?

Air Conditioning problem
1996 Lincoln Town Car Automatic 110000 miles

The fan on the air conditioning only works on high. the air is cold but only high fan control. How could I do this myself. Last years post showed a bmr reply who had a schematic said it was the blower motor resistor- could he email it to me as well.

TEST "K" (BLOWER MOTOR RUNS AT HIGH SPEED IN ALL SETTINGS) 1. Check Blower Motor Medium Speed Operation Start engine. Select MAX A/C. Set blower motor thumbwheel midway between highest and lowest speed settings. If blower motor operates at medium speed, go to TEST "A". If blower motor does not operate at medium speed, go to next step. 2. Check Voltage At Blower Speed Controller Turn ignition off. Unplug blower speed controller connector. Start engine. Select MAX A/C. Set blower motor thumbwheel to lowest speed setting. While moving thumbwheel back and forth between highest and lowest speed, measure voltage between terminals No. 3 (RED/Pink wire) and No. 1 (Black wire) of blower speed controller connector. 3. If voltage is zero volts at highest speed setting and 1-2 volts at all other settings, go to next step. If voltage is more than 2 volts at all speed settings, replace EATC module and check system operation. If voltage is zero volts at all speed settings, go to step 5). If none of these conditions applies, recheck voltage, and then return to step 1). 4. Check Voltage At Any Speed Setting Except High Set blower motor thumbwheel at any speed setting except high. Measure voltage between terminals No. 1 (Black wire) and No. 2 (Purple/White wire) of blower speed controller. If voltage is zero volts, replace blower speed controller. Check system operation. If voltage is not zero volts, replace EATC module. Check system operation. 5. Check Voltage At Red/Pink Wire Terminal Of EATC Module Turn ignition off. Reconnect blower speed controller connector. Start engine. Select MAX A/C. Rotate blower motor thumbwheel to medium speed setting. Measure voltage between ground and terminal No. 7 (RED/Pink wire) of EATC module connector (backprobe terminal). 6. If voltage is 1-2 volts, repair RED/Pink wire between blower motor speed controller and EATC module. If voltage is zero volts, replace EATC module. Check system operation. If neither condition applies, recheck voltage, and then return to step 1). The blower motor speed controller is on the evap case under the hood right rear corner near hood hinge.

The blower on my air conditioning only works on high speed, any other setting doesn't work. Is this a problem with the control unit, or the blower? Will I need to replace, or is it repairable?

It is most likely your A/C - Heater Blower Motor Speed Controller It is located under the hood on the passenger side on evaporator case and it looks like this. Please let us know if you need anything else to get the problem fixed.