Auto Climate Control Problem
I will second that. I just completed the above TSB and while it fixed some of the sound it did not fix it all. I found another TSB which states that the foam used to seal the defrost vents can fail and fall into the vent doors. This will not allow the vent doors to close all the way which causes an annoying sound when the system turns on and off. Now from what I read this problem can be found on all models. The kicker is you have to remove the entire dash to get to the vent doors. Sounds like I will be living with the little creator in my dash. Don't really care to tear my center console and dash out.
I will second that. I just completed the above TSB and while it fixed some of the sound it did not fix it all. I found another TSB which states that the foam used to seal the defrost vents can fail and fall into the vent doors. This will not allow the vent doors to close all the way which causes an annoying sound when the system turns on and off. Now from what I read this problem can be found on all models. The kicker is you have to remove the entire dash to get to the vent doors. Sounds like I will be living with the little creator in my dash. Don't really care to tear my center console and dash out.
For those of you with this problem here is the TSB fix.
FORD:
2005-2008 F-150LINCOLN:
2006-2008 Mark LT
ISSUE:
Some 2005-2008 F-150 (excludes Heritage) and 2006-2008 Lincoln Mark LT vehicles built after 11/29/2005 may exhibit a grinding noise from the climate control system while changing air distribution modes.
ACTION:
Perform the following Service Procedure to correct the condition.
SERVICE PROCEDURE
WARRANTY STATUS:
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
OPERATIONDESCRIPTIONTIME080809A2005-2008 F-150, 2006-2008 Mark LT
: Remove Distribution Mode Door Cam and Replace Cam Lubricant.0.4 Hr.
DEALER CODING
BASIC PART NO.CONDITION CODE1847141
__________________
FORD:
2005-2008 F-150LINCOLN:
2006-2008 Mark LT
ISSUE:
Some 2005-2008 F-150 (excludes Heritage) and 2006-2008 Lincoln Mark LT vehicles built after 11/29/2005 may exhibit a grinding noise from the climate control system while changing air distribution modes.
ACTION:
Perform the following Service Procedure to correct the condition.
SERVICE PROCEDURE
- <LI itxtvisited="1"><LI itxtvisited="1">Set control head to panel mode.
NOTE:DO NOT ENERGIZE THE MODE DOOR MOTOR WITHOUT IT BEING CONNECTED TO THE UPPER PLENUM.
<LI itxtvisited="1">Leaving the motor plugged in and installed to the cam plate, remove the four bolts that attach the cam plate to the upper plenum. (Figure 1)

Figure 1 - Article 08-8-9
<LI itxtvisited="1">Remove cam plate. <LI itxtvisited="1">Remove cam. <LI itxtvisited="1">Clean all existing lube from cam. <LI itxtvisited="1">Liberally apply Motorcraft® PTFE Lubricant to the cam tracks. (Figure 2)

Figure 2 - Article 08-8-9
<LI itxtvisited="1">Reassemble components in reverse order of removal. - Cycle the control head from panel to defrost mode a few times until the noise is eliminated.
WARRANTY STATUS:
Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.
OPERATIONDESCRIPTIONTIME080809A2005-2008 F-150, 2006-2008 Mark LT
: Remove Distribution Mode Door Cam and Replace Cam Lubricant.0.4 Hr.DEALER CODING
BASIC PART NO.CONDITION CODE1847141
__________________
It's kind of hard to tell where it is from the pics in the service manual. It's says its accessible from the left side under the instrument panel, looks like it is closer to the center.

here is what your looking for. As stated above you will find it under the drivers side dash. It's a pretty easy fix for an annoying problem. My noise seems to have completly went away as I did not hear it all day. Make sure you unplug the wire to the small electic motor and when you pull it off try not to move the two contol arms. This will change your blend doors causing your defrost to come on when you want your vents to come on or vise vs. It will make sense when you tear into it. I moved the arms when I tore it apart and had to make sure they were it the right posistion when I reassembled. Kind of a pain. If your carefull you won't have this problem. I would recomend turning the auto botton to manual and turn the vents on before turning your truck off and starting this process. This will make it easier finding the right posistion if you do move the arms. Hope this makes sense it should once you start let me know if I can help.
Last edited by TaserX; May 1, 2010 at 08:12 AM.
ok guys I read all the posts on this subject and only found one with my problem. 2006 screw Harley Davidson 5.4. Auto climate quit working' the control lights come on but no display and no functions, all fuses are good. Went out last year about this time and dealership replaced a resistor in the driver side fuse box. Its still under warranty so ill be taking it back on monday. All it does is make a whining noise and the whole unit stays warm like its overheating. any ideas?
When I select the automatic function it sends it to the defroster vent instead of the vents on the dash. What could cause that problem? 2003 F-150 Lariat.
How do I test a problem with my electric seats on my F=150?
How do I test a problem with my electric seats on my F=150?

here is what your looking for. As stated above you will find it under the drivers side dash. It's a pretty easy fix for an annoying problem. My noise seems to have completly went away as I did not hear it all day. Make sure you unplug the wire to the small electic motor and when you pull it off try not to move the two contol arms. This will change your blend doors causing your defrost to come on when you want your vents to come on or vise vs. It will make sense when you tear into it. I moved the arms when I tore it apart and had to make sure they were it the right posistion when I reassembled. Kind of a pain. If your carefull you won't have this problem. I would recomend turning the auto botton to manual and turn the vents on before turning your truck off and starting this process. This will make it easier finding the right posistion if you do move the arms. Hope this makes sense it should once you start let me know if I can help.
Sorry I know this is an old post but having the same issue. Where exactly is this? I am not following it and hoping it is a simple fix.




