I am trying to finish up the work to get my no heat problem solved on my 1994 XJ6 but it seems that one of my heater blend door motors is dead.
This is the one that operates the upper blend door so I imagine the years of having the defrost flaps blocking the movement of the upper blend door burnt out the motor.
I have attached a couple photos of the motor so everyone here can see what I am talking about.
Does anyone here have a spare working blend door motor?


blend door motor showing the side with the drive dog sticking out

blend door motor showing the back side of the motor

 

The motors are pretty much the same for the XJ40s (and XJ-S) except for the red electrical connector. There are different ones but you can always splice yours onto the wires?

 

I found another heater blend door motor in my stock of parts but the wiring connector was different. I decided to take my original non-functional blend door motor apart to check the stuff inside.
It turns out the actual electrical part of the motor did work just fine but two of the plastic gears inside the casing had a broken/missing tooth so I would guess this was because of the jammed blend door.
So I took the plastic gears out of the replacement motor assembly and swapped them over to the original unit and reassembled the original one.
I have to get some of the small screws that hold the unit onto the side of the heater box so I can remount it.

 

Like I said, just the connectors are different.