HVAC Repair - MEGA Guide
Dec 17, 2010, 06:00 PM
#32
Newbie
Join Date: Dec 2010
Location: Palo Alto, CA
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Is there any detailed step-by-step procedure on how to do that? I cannot believe stupid knob design requires taking half of a car apart...
Dec 18, 2010, 03:00 PM
#33
My fault. I will add this image into the post when I get the chance.
https://www.evolutionm.net/forums/at...m-dsc01545.jpg
(I just included the link so the image wouldn't take up the post space here.)
On the left are the revised gears and on the right are the stock ones. Hope that helps!
https://www.evolutionm.net/forums/at...m-dsc01545.jpg
(I just included the link so the image wouldn't take up the post space here.)
On the left are the revised gears and on the right are the stock ones. Hope that helps!
Dec 24, 2010, 05:19 PM
#35
Newbie
Join Date: Dec 2010
Location: Palo Alto, CA
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Hey guys,
Do you know the size of the screws that secure the air filter? I didn't have a filter in my car, so I had to cut the black rectangular part out and install a new one. However, I cannot secure the filter properly - using duct tape as a temporary solution. What is the thread and what length screws should I get?
Thanks!
Do you know the size of the screws that secure the air filter? I didn't have a filter in my car, so I had to cut the black rectangular part out and install a new one. However, I cannot secure the filter properly - using duct tape as a temporary solution. What is the thread and what length screws should I get?
Thanks!
Jan 6, 2011, 06:37 PM
#36
Hey guys. I have the new gears but it was still hard to turn. Then yesterday while I was doing other stuff I decided to try out someone's advice (read it somewhere on this board) and loosen the screw behind the temp control knob. It worked! Then thing is much smoother to turn now. Theres still some stick but its entirely liveable. Now I'm not afraid to let other people touch my temp knob 
. I loosened my screw about a full turn from tight but I didn't spend anymore than 5mins figuring out how much to loosen it.
. I loosened my screw about a full turn from tight but I didn't spend anymore than 5mins figuring out how much to loosen it.
The following users liked this post:
03_OZRally (Nov 22, 2020)
Jan 10, 2011, 04:50 PM
#37
So glad I found this thread. There's two inches of snow outside right now with no heat in my car. Great thread. But it only makes me sick to my stomach thinking I may have to remove most of the interior to fix this problem ugh. That's mitsubishi for ya tho. Only plus if I have to is I might decide to finally just gut the car for weight savings lol.
Feb 3, 2011, 03:26 PM
#38
For anyone else with this problem if ur blend door is getting stuck I got under my dash and forced it open and closed by moving the gears manually it got easier and easier to move. I also just installed the cabin filter and ordered the revised gears. I found another problem with my cars heat. The idiot before me that owned my evo zip tied a vacuum line for the boost gauge to the hheater knob wire and had duct tape around it? This over time caused the wire to bend so I ordered a new one of those. I think I caught my problem right before the blend door became too gunked up to move.
Jul 23, 2011, 09:58 AM
#41
Newbie
Join Date: Jul 2011
Location: ottawa
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
thanks a lot for this write-up.
I just changed the wire and gears but the knob is still very hard to turn. I'm thinking this might be because of the blend door kit?
Also, what would cause the ac to not work because of this? Even if i turn the gears manually, I can't get the car to start the a/c?
thanks in advance,
Marc
I just changed the wire and gears but the knob is still very hard to turn. I'm thinking this might be because of the blend door kit?
Also, what would cause the ac to not work because of this? Even if i turn the gears manually, I can't get the car to start the a/c?
thanks in advance,
Marc
Jul 23, 2011, 05:10 PM
#42
thanks a lot for this write-up.
I just changed the wire and gears but the knob is still very hard to turn. I'm thinking this might be because of the blend door kit?
Also, what would cause the ac to not work because of this? Even if i turn the gears manually, I can't get the car to start the a/c?
thanks in advance,
Marc
I just changed the wire and gears but the knob is still very hard to turn. I'm thinking this might be because of the blend door kit?
Also, what would cause the ac to not work because of this? Even if i turn the gears manually, I can't get the car to start the a/c?
thanks in advance,
Marc
This particular issue and the blend door wouldn't cause your A/C to not work all together. (It COULD but if you can open and hear the door move manually, by forcing the gears to move, then that isn't your issue.) You might have some other problem with the HVAC ECU (control unit that the knobs attach to) not turning on your A/C or it could be an issue with your A/C lines in the engine bay. I would get that checked first before you tear down the dash.
Jul 24, 2011, 12:19 PM
#43
Newbie
Join Date: Jul 2011
Location: ottawa
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
If you changed the gears and wires, the only thing left is the blend door. That was my issue (well the root cause) -- so that's your problem if the knob is still difficult to turn.
This particular issue and the blend door wouldn't cause your A/C to not work all together. (It COULD but if you can open and hear the door move manually, by forcing the gears to move, then that isn't your issue.) You might have some other problem with the HVAC ECU (control unit that the knobs attach to) not turning on your A/C or it could be an issue with your A/C lines in the engine bay. I would get that checked first before you tear down the dash.
This particular issue and the blend door wouldn't cause your A/C to not work all together. (It COULD but if you can open and hear the door move manually, by forcing the gears to move, then that isn't your issue.) You might have some other problem with the HVAC ECU (control unit that the knobs attach to) not turning on your A/C or it could be an issue with your A/C lines in the engine bay. I would get that checked first before you tear down the dash.
I think I'll tear down the dash just so that I can go and clean up the blending door. I'll do a full write-up of it as well I must say.
Gracias again
Jul 25, 2011, 08:37 AM
#44
Newbie
Join Date: Apr 2011
Location: Florida
Posts: 44
Likes: 0
Received 0 Likes
on
0 Posts
I will be attemping this in the next month or so. Hopefully you can have pics as well. Dealership quoted over $2K for this! 
Last edited by stevenkha; Jul 26, 2011 at 04:10 PM.
