Adding an EATC system to pre 1997 trucks - Page 2 - Ford Truck Enthusiasts Forums

Go Back  Ford Truck Enthusiasts Forums > Misc. > Cooling, Heating, Ventilation & A/C
Reload this Page >

Adding an EATC system to pre 1997 trucks

Notices

Adding an EATC system to pre 1997 trucks

  #16  
Old 10-06-2016, 01:34 PM
Travis S's Avatar
Travis S
Travis S is offline
Elder User
Join Date: May 2014
Posts: 538
Travis S is gaining momentum as a positive member of FTE.
Originally Posted by 85lebaront2 View Post
The original connections are two eight conductor ribbon cables, probably 18ga. then there are 5 more for the manual blower speed rheostat and light. As far as suitability, these are more then adequate since they will be inside the cab. For all my exterior wiring, I have a large collection of Ford connector pairs from 4 pin to 42 pin with the seals and I buy the male/female pins from RockAuto for the .125 wedgelock and Clips and Fasteners for the AuVeCo .062 male/female Wedgelock. Both of these are crimped on, but I solder them for a more secure electrical connection.

FWIW, I rewired the entire truck from the original 1986 system to a 1996 system and changed the dash and interior to a 1996 system. Go through some of my other threads, truck now has automatic headlights and a few other not originally offered options.
By the breadth of modifications you've performed, it sounds like you are quite adept with wiring. Can you go into more detail about these WedgeLock and AuVeCo connectors? Perhaps a link for info would be helpful
 
  #17  
Old 10-06-2016, 02:19 PM
85lebaront2's Avatar
85lebaront2
85lebaront2 is offline
Old School Hot Rodder
Thread Starter
Join Date: Feb 2006
Location: Exmore, VA
Posts: 6,453
85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold
I've done my share, converted a 1985 K-LeBaron convertible from 2.6L w/feedback carburetor to 2.2L turboII (intercooled). That was fun! Truck has been a work in progress. Here is a screenshot of my information thus far, I was mistaken on the big wedgelock, .110 not .125.




Dorman can be ordered from RockAuto, the AuVeCo stuff I get from Clips and fasteners (http://www.clipsandfasteners.com/)
 
  #18  
Old 03-04-2017, 12:39 PM
LithiumCobalt
LithiumCobalt is offline
New User
Join Date: Nov 2008
Location: Fort Wayne, IN
Posts: 11
LithiumCobalt is starting off with a positive reputation.
Hi 85,

Any progress on this project? I am looking to do the EATC retrofit to my 1994. My biggest question is how the new electronic blend door actuator mounts to the existing heater box? Any cutting or reconfiguring needed?
 
  #19  
Old 03-04-2017, 12:52 PM
85lebaront2's Avatar
85lebaront2
85lebaront2 is offline
Old School Hot Rodder
Thread Starter
Join Date: Feb 2006
Location: Exmore, VA
Posts: 6,453
85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold
No, I haven't had a good chance to R&R the dash to do the fit up of the blend door and locate the two halves of the control assembly. I have been busy on my Konvertible trying to get it in a condition to start assembling it.
 
  #20  
Old 11-02-2017, 02:06 PM
h8ers
h8ers is offline
New User
Join Date: Nov 2017
Posts: 1
h8ers is starting off with a positive reputation.
I have a mount that I make, it's 3d printed, it mounts the blend door actuator perfectly and also comes with the blend door "key" to fit the blend door to the actuator. PM me if interested.
 
  #21  
Old 12-07-2017, 06:02 PM
85lebaront2's Avatar
85lebaront2
85lebaront2 is offline
Old School Hot Rodder
Thread Starter
Join Date: Feb 2006
Location: Exmore, VA
Posts: 6,453
85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold
Ok, I haven't really been in a position to do much on this, but I recently acquired a dash and complete HVAC system from a 1995 F450. This gives me the needed pieces to fit and experiment with. First is the inside duct layout.



This is the real problem, on most of the EATC systems on cars and later trucks, the panel and defroster ducts are fed from the mode door, either up, half or down. Half allows a second door to select panel or defrost giving the extra position of panel/floor in addition to the def/floor that we have in the trucks.
 
  #22  
Old 12-07-2017, 07:01 PM
85lebaront2's Avatar
85lebaront2
85lebaront2 is offline
Old School Hot Rodder
Thread Starter
Join Date: Feb 2006
Location: Exmore, VA
Posts: 6,453
85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold
The next piece of the puzzle is the inside case, the one the heater core sits in. This contains the temperature blend door, mode door and defroster door.













As can be seen, the mode has only two positions, up (open) for panel vents and down (closed) for heat and defrost. The defroster has three positions, heat (closed, full up) mix (halfway) and defrost (open, fully down).

On a 1996 Thunderbird the panel controls have eight positions, MAX A/C, A/C, PANEL, OFF, PANEL & FLOOR, FLOOR, FLOOR & DEF, DEFROST. Our trucks have seven positions, MAX A/C, NORM A/C, VENT, OFF, FLOOR, MIX, DEF. To arrive at the difference, first the Mode door has to have three positions, Up (Panel and Defrost) midway (Panel or Defrost and Floor) and down (Floor), second, the panel and defrost ducting has to originate at the mode door then have a second mode door to select between Panel and Defrost. Due to the design of the truck ductwork, that isn't a viable function, it would require the Defroster and panel ducts be together from the existing mode door and have a new Panel/Defrost door installed in the ducts.
 
  #23  
Old 12-07-2017, 07:13 PM
85lebaront2's Avatar
85lebaront2
85lebaront2 is offline
Old School Hot Rodder
Thread Starter
Join Date: Feb 2006
Location: Exmore, VA
Posts: 6,453
85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold
This, unfortunately precludes the direct use of the later controls which have a very nice split system, the control head is very compact and the vacuum valves are located close to the HVAC case which sits completely inside the cab instead of half under the hood. I did find a unit that uses the same distribution design in a later Crown Victoria and Grand Marquis. The problem is it's size, it is all one control head with the wiring and vacuum in the back. It will not fit in the space between the mounting point (which it fits perfectly) and the duct assembly. Now that I have an extra dash, I may see if the ducts can be cut out for it to slide into. I am also going to look at doing some rearrangement of the area where the 1992-1996/7 ducts (all one piece) come past each other to move the Defrost function into that area allowing the Mode door to become three positions so the later more compact control head (and steering wheel controls) can be used. In this case, the defogger system would have to be tapped from the Defrost duct.
 

Last edited by 85lebaront2; 12-07-2017 at 07:15 PM. Reason: Added note on defogger.
  #24  
Old 12-29-2017, 08:15 PM
85lebaront2's Avatar
85lebaront2
85lebaront2 is offline
Old School Hot Rodder
Thread Starter
Join Date: Feb 2006
Location: Exmore, VA
Posts: 6,453
85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold
Some more playing with the 1999 Crown Victoria unit, the blower speed control. On the Crown Victoria it is mounted under the hood on the evaporator case in the discharge side where the already cooled air blows over it. On the truck system, that side of the evaporator case is fairly narrow and mostly occupied with the vacuum reservoir. The opening where the present blower resistor sits is large enough for the power transistor and heat sink, but the mounting area isn't.


1999 Crown Victoria EATC blower speed controller on truck evaporator case.



It fits in the hole but doesn't clear the case.
 

Last edited by 85lebaront2; 03-21-2018 at 03:47 PM. Reason: Left a 9 out
  #25  
Old 12-29-2017, 08:41 PM
MisterCMK's Avatar
MisterCMK
MisterCMK is offline
Avid Winter Hater
Join Date: Mar 2003
Location: Rogers, MN
Posts: 23,987
MisterCMK has a superb reputationMisterCMK has a superb reputationMisterCMK has a superb reputationMisterCMK has a superb reputationMisterCMK has a superb reputationMisterCMK has a superb reputationMisterCMK has a superb reputationMisterCMK has a superb reputationMisterCMK has a superb reputationMisterCMK has a superb reputationMisterCMK has a superb reputation
I'm following this one, very interested to see how it turns out!
 
  #26  
Old 12-30-2017, 09:21 AM
85lebaront2's Avatar
85lebaront2
85lebaront2 is offline
Old School Hot Rodder
Thread Starter
Join Date: Feb 2006
Location: Exmore, VA
Posts: 6,453
85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold85lebaront2 is a splendid one to behold
Here are two more pictures of the Crown Victoria blower controller fit.


Looking down from the top, you can see where the connector will not clear the case angle.



Inside showing the hollow rib and the circuit board.
 
  #27  
Old 04-10-2018, 02:57 PM
ifrythings's Avatar
ifrythings
ifrythings is offline
Elder User
Join Date: Aug 2011
Posts: 630
ifrythings is gaining momentum as a positive member of FTE.
Here’s a few pics of where to mount the blower module
 
  #28  
Old 11-02-2018, 09:58 PM
444whitehorse
444whitehorse is offline
New User
Join Date: Nov 2018
Posts: 1
444whitehorse is starting off with a positive reputation.
Bringing some life back to this thread since it's a current one with good details. I just picked up all the stuff I needed finally to do this, been playing hell trying to find a complete donor. I did screw up tho and forgot the blower motor controller and the exterior temp sensor.

Thats all I have to add to this for now, I go back to work Monday and I highly doubt I'll be getting started on it this weekend. Next days off (after Thanksgiving) I plan to start working on all of the fitment aspects to this. This weekend, I'm going back to the car to get my forgotten items, and rewiring my wife's Ranger for a/c where it's a factory heat only truck. Also laying down new carpet, just finished swapping in buckets and a true console.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
FroHaiGan
Cooling, Heating, Ventilation & A/C
0
07-09-2017 08:50 PM
Bryan Chain
2004 - 2008 F150
2
10-10-2016 03:39 PM
Tobnpr
1997-2006 Expedition & Navigator
4
07-28-2016 10:09 PM
izzybird
6.0L Power Stroke Diesel
12
06-02-2016 02:27 PM
ryno_rx8
1997-2006 Expedition & Navigator
2
05-10-2016 01:51 PM


Thread Tools
Search this Thread
Quick Reply: Adding an EATC system to pre 1997 trucks


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.