Under the dash noise

[Mattsmerc]

I have heard this loud clicking or tapping from under the center part of the dash. It does it when I startup, but not all the time.
Any ideas?

[Logizyme]

HVAC doors?

[fastblackmerc]

Most likely the blend door actuator.

Try running the EATC self-test, it might reset everything and end the noise.

[Mattsmerc]

Ok. Any idea on what needs to be done to repair it?

[RF Overlord]

If running the EATC self-test doesn't clear it, you need to pull the dash to replace the actuator.

[fastblackmerc]

Ok. Any idea on what needs to be done to repair it?


If running the EATC self-test doesn't clear it, you need to pull the dash to replace the actuator.

What Bob said....

It's a 3-4 hour job if done properly and the part from Ford is around $75.00 or less.

If you decide to use an aftermarket parts... Dorman, etc, it will fail sooner than an OEM Ford part and you will be replacing it again.

[fastblackmerc]

Part numbers:

YH-1668

XW7H19E616BA

XW7Z19E616BA

[Mattsmerc]

How do I go about doing the self test?

[fastblackmerc]

google "ford eatc self test"

[Gerry24]

On my 08 MGM LS had same problem... I would just disconnect the battery then the door would reset it self. I would just use the A/C for cold never heat. everytime changed to heat that thump would start.

[Mattsmerc]

Ok found this
http://youtu.be/TV6TVDR0TTA

And the noise is there. So I guess I'm tearing into the dash :(

Gerry24, I pulled the battery cable off trying to get my key fob to work... That's another story. But no luck with the eatc

[Gerry24]

Ok found this
http://youtu.be/TV6TVDR0TTA

And the noise is there. So I guess I'm tearing into the dash :(

Gerry24, I pulled the battery cable off trying to get my key fob to work... That's another story. But no luck with the eatc

Whoa... Just be careful that dashboard is huge... Dont want to make more work for yourself.:beer:

[fastblackmerc]

Ok found this
http://youtu.be/TV6TVDR0TTA

And the noise is there. So I guess I'm tearing into the dash :(

Gerry24, I pulled the battery cable off trying to get my key fob to work... That's another story. But no luck with the eatc

Did you get any codes after the self test?

[Mattsmerc]

Did you get any codes after the self test?

I'm goin to do a video an see what you all think.

[Mattsmerc]

https://youtu.be/UOXUYM9a8e0

That is the noise

[Gerry24]

That's a differnt noise... Not the thump, sounds like something is loose.

[Mattsmerc]

Sounds almost like gear being stripped

[Gerry24]

You're going to have to get in there... where's noise coming from??? left, right,

[Mattsmerc]

Does this look normal?

[Mattsmerc]

You're going to have to get in there... where's noise coming from??? left, right,

sounds like center

[Mattsmerc]

Ok I think I found the problem. There is a gear driven actuator that I can put my hand on and feel the gears slipping.

While I had the EATC out I checked the o rings. A little dry so I used a lite coat of silicone grease


TIP YOUR HEAD TO THE LEFT AN YOU CAN SEE THE GEAR THING BETTER ;)

[RF Overlord]

There is a gear driven actuator that I can put my hand on and feel the gears slipping. If it's got an electrical plug on it, then it's the blend door actuator. All the others are vacuum operated.

[Gerry24]

Does this look normal?

Vacuum hoses look ok to me. When you disconnected them did you hear a whistle??? If you did you have no leaks.

[RF Overlord]

Does this look normal?Yes, there are only 5 vacuum lines...the empty port is supposed to be like that.

[fastblackmerc]

Ok I think I found the problem. There is a gear driven actuator that I can put my hand on and feel the gears slipping.

While I had the EATC out I checked the o rings. A little dry so I used a lite coat of silicone grease


TIP YOUR HEAD TO THE LEFT AN YOU CAN SEE THE GEAR THING BETTER ;)

Have the o-rings been replaced?

Did you get any DTC's after running self test?

You need to replace the blend door actuator.

[fastblackmerc]

Does this look normal?

Normal......

[Mattsmerc]

Have the o-rings been replaced?

Did you get any DTC's after running self test?

You need to replace the blend door actuator.

The o rings are orange. Not the normal on them is it?
The self test showed no codes. So that's good news.
Gerry 24 I pulled apart kinda fast and didn't notice the vacuum whistle.
Now on to the search of info of how to get that actuator out

[Mattsmerc]

Man this is awesome! I found the write up for replacing the actuator. Thank you Juice!!!
http://www.mercurymarauder.net/forums/showthread.php?t=69180

[Gerry24]

Keep us posted!!

[Mattsmerc]

OK!
All fixed. It looks as somebody else was there . They had a good idea too. take the ears on the driver and front portion and nip off the end so you can slide the unit into place. With those screws still in place but a little loose you can slip it in and tighten the one more to the passenger side. Total time: 1.5 hrs

[Gerry24]

Nice.... Back to cruisin...