Page 1 of 8 12345678 LastLast
Results 1 to 15 of 109

Thread: EATC o-ring repair - How to... with pics.

  1. #1
    Join Date
    Feb 2006
    Location
    middle of iowa
    Age
    36
    Posts
    2,772

    Arrow EATC o-ring repair - How to... with pics.

    Well, it was my turn for the EATC fixing, I used JAcook's walkthrough about it and I took pics to help with those who might be scared to do it, its pretty easy.

    JACook:
    I know others have revived their EATCs by swapping in the vacuum solenoid assembly from other Ford
    products, but I decided to dig a bit deeper. The problem was an o-ring inside one of the EATC solenoids.
    Total cost to fix the problem- 'Bout 25 cents, and a couple hours of my time.

    Replacing the o-rings requires disassembly of the solenoids, but that's really not that hard to do, if one
    has reasonably good mechanical aptitude. But first, make sure they hold vacuum when not energized.
    Connect a hose to the center vacuum port (where the black tube was connected) and suck it.
    It should hold vacuum. If it doesn't, the following fix probably isn't for you.

    The solenoid assembly comes off the EATC module by unscrewing the two T-20 Torx screws on the
    back side of the module. Pivot the rear of the assembly up, and disengage the tabs at the front of
    the module. Disconnect the solenoid connector.

    Lay the solenoid assembly on it's back, and remove the 10 screws holding the solenoids and plenum
    strap to the plastic frame. At the wiring end of each solenoid, you'll see two metal tabs folded over,
    that hold the solenoid coil and armature to the solenoid frame. Straighten these tabs and then carefully
    pull out the armature, while watching you don't lose the spring or plunger that are inside. Note the
    o-ring on the armature. That's what we're after.

    Next, slide the coil off the end of the plenum tube, and then pinch the ends of the solenoid frame
    together to release it from the plenum. Once the solenoid is all apart, fit the armature back into the
    end of the plenum tube to check that the o-ring has a good snug fit. If it does, clean the inside of
    the tube, and reassemble the solenoid. You can replace the o-ring if you like, but if it fits well, there's
    no need.

    Make sure you pay attention to the screw flanges on the solenoid frame. Pinch the end of the frame
    together to fit it back onto the plenum. The spacer that goes at the plenum end of the solenoid
    has the inside diameter undercut, and four grooves. The undercut end goes toward the plenum, and
    you'll see four ribs at the base of the plenum tube that mate with the four grooves in the spacer.

    The armature slides back on next, followed by the plunger, and then the spring. (The flat end of
    the plunger goes into the hole first, if you missed how it came out.) Use a bit of dielectric grease on
    the o-ring, (I used Nylog) but do not use any oil or anything on the plunger. Make sure the tip of the
    armature where the plunger seals against it, is clean and shiny. Don't get any dielectric grease on the
    tip of the armature. Clean and dry is what you want here. Slide the armature back into the end of the
    solenoid, and while pressing everything back together, fold the metal tabs back over.

    Repeat this for each of the four solenoids. On mine, the one that was leaking was for the floor vent
    door (red hose). It was obvious when I got to that one. The armature came out much easier than the
    others, and when I test-fitted the armature back into the plenum tube,
    it was a much looser fit.
    Or for those who are better seeing than reading...

    - Remove the dash trim about the EATC unit (pulls up from the passenger side all the way to the steering wheels)

    - Remove the 4 screws on the front of the unit holding it in.



    - Remove the 2 electical connectors, then the 2 black nuts holding the vacuum connector on the ports.




    Once the unit is out, remove the 2 gold torqs screws on the back, then the top half will lift up and off. This is the vacuum soleniods and vacuum plenum.




    -Once they are off, unplug the wire connector to the solenoids.




    Once the vacuum solenoid assembly is off remove all 10 of the screws holding it all down, (here you can skip to the step about bending the tabs on the rear of the solenoid if you just need to replace the o-ring) then you can gently pry up the 2 long arms that are closest to the middle of plenum.



    once that is off you can pull the whole solenoid and frame straight off.



    Once the solenoid is off, there will be two tabs on the rear folded over the back, pry them up till they are straight, then slightly pry to two side ones up (these are the ears on the part of the solenoid that has the o-ring on it), and the rear of the solenoid will pull off the back.





    Once that is off, you will see the o-ring you need to replace.
    (the red/orange one is the new one in this picture)
    Replace the oring- then there is a little silver part that goes in the black body of the vacuum plenum, rubber tit end in 1st, then the spring on the back of it, you will see how it sits on the silver peice, then the frame around the solenoid, with the spacer... push this all back onto the plenum, making sure your 4 slots of the spacer are lined up, and when it fits back together, fold all 4 of your tabs back over.


    Repeat this on the other solenoids, then re-install everything in the reverso order or removal... and fire it up.


    Did mine today, took an hour, maybe 1.5 hrs. Working GREAT. Pretty cheap fix too.


    Hope it helps.
    Last edited by Black_Noise; 06-30-2012 at 02:29 PM.

  2. #2
    Join Date
    Jan 2004
    Location
    Somewhere in the N.C. Triangle
    Age
    63
    Posts
    25,745
    Did you use some silicone dilectric grease on the new o-rings? Will make them last longer.

    No need to remove the guts of the solenoid, just pull out the shaft.... Have never found anything wrong except the o-rings in the 100+ I've done.
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  3. #3
    Join Date
    Feb 2006
    Location
    middle of iowa
    Age
    36
    Posts
    2,772
    Quote Originally Posted by fastblackmerc View Post
    Did you use some silicone dilectric grease on the new o-rings? Will make them last longer.

    No need to remove the guts of the solenoid, just pull out the shaft.... Have never found anything wrong except the o-rings in the 100+ I've done.
    well...thats one way to do it.... lol, I didnt know if it needed to or not so I just disasembled it all.

  4. #4
    Join Date
    Aug 2011
    Location
    Euless, tx
    Posts
    499
    Wondering what's the deal with mine blows cold then when car warms up it gets cool, if I put the temperature hot it doesn't get hot stays cool. Any thoughts? thanks

  5. #5
    Join Date
    Feb 2006
    Location
    middle of iowa
    Age
    36
    Posts
    2,772
    blend door stuck?

  6. #6
    Join Date
    Jan 2004
    Location
    Somewhere in the N.C. Triangle
    Age
    63
    Posts
    25,745
    Quote Originally Posted by airjordan2k8 View Post
    Wondering what's the deal with mine blows cold then when car warms up it gets cool, if I put the temperature hot it doesn't get hot stays cool. Any thoughts? thanks
    Sounds like the blend door. Run the EATC self-test to see if there are any codes. Sometimes running the test 3 - 5 times fixes the problem.
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  7. #7
    Join Date
    Aug 2011
    Location
    Euless, tx
    Posts
    499
    Quote Originally Posted by fastblackmerc View Post
    Sounds like the blend door. Run the EATC self-test to see if there are any codes. Sometimes running the test 3 - 5 times fixes the problem.
    FBM, how do you run the test??

  8. #8
    Join Date
    Jan 2004
    Location
    Somewhere in the N.C. Triangle
    Age
    63
    Posts
    25,745
    A google.com search returns this as the first hit:

    http://www.mercurymarauder.net/forum...ad.php?t=58956

    I searched for: "marauder eatc test"
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  9. #9
    Join Date
    Aug 2011
    Location
    Euless, tx
    Posts
    499
    Quote Originally Posted by fastblackmerc View Post
    A google.com search returns this as the first hit:

    [url]http://www.mercurymarauder.net/forums/showthread.php?t=58956[/url ]

    I searched for: "marauder eatc test"
    So I ran the test and gave me code 024. I know its the blend door, I just replaced the bda. Any thoughts???

  10. #10
    Join Date
    Jan 2004
    Location
    Somewhere in the N.C. Triangle
    Age
    63
    Posts
    25,745
    Quote Originally Posted by airjordan2k8 View Post
    So I ran the test and gave me code 024. I know its the blend door, I just replaced the bda. Any thoughts???
    Bad connection at the blend door motor & check fuse #23 (15 amp).

    Shop manual says, Blend door short or failure. go to pin point test "A".
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  11. #11
    Join Date
    Aug 2011
    Location
    Euless, tx
    Posts
    499
    Quote Originally Posted by fastblackmerc View Post
    Bad connection at the blend door motor & check fuse #23 (15 amp).

    Shop manual says, Blend door short or failure. go to pin point test "A".
    Fuse seems fine should I take it apart again?? Mechanic said it was the plenom but idk that's why I came back here with more questions.
    Last edited by airjordan2k8; 07-01-2012 at 09:46 AM.

  12. #12
    Join Date
    Jun 2012
    Location
    ON canada
    Posts
    262
    This is a great post! Thank you Black Noise but , I just spent $100 bucks on EBay for a remaned one before I saw this. SHHIITT!! Guess I'll fix my old one and try to sell it to get my money back...

  13. #13
    Join Date
    Apr 2011
    Location
    Statesville, NC
    Age
    28
    Posts
    2,164
    thanks took me about 5 hours, had to find a store that sold the right size o rings but finally got em

  14. #14
    Join Date
    Sep 2006
    Location
    Charleston, SC
    Age
    36
    Posts
    38
    I just did my second EATC repair. The first repair I replaced the the OEM o-rings with regular rubber o-rings. This time I ordered some silicone o-rings. So put my EATC back in turn on and the same problem persists. Air STILL Blowing out of DEFROST VENT ONLY.... I then performed an EATC Self Test, and I got 888 with all displays. Which I read to be No Codes... So someone please tell me what else can be WRONG?????

  15. #15
    Join Date
    Jan 2004
    Location
    Somewhere in the N.C. Triangle
    Age
    63
    Posts
    25,745
    Quote Originally Posted by jwibbity View Post
    thanks took me about 5 hours, had to find a store that sold the right size o rings but finally got em
    But were they silicone o-rings?
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




Page 1 of 8 12345678 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. EATC Repair
    By fastblackmerc in forum Marauder Innovations
    Replies: 25
    Last Post: 06-18-2015, 04:43 AM
  2. Eatc repair success
    By marauder410 in forum Shop Talk
    Replies: 3
    Last Post: 06-06-2012, 01:19 AM
  3. Eatc repair??
    By biggeorge04 in forum Shop Talk
    Replies: 6
    Last Post: 09-23-2011, 10:10 PM
  4. EATC Repair
    By PonyUP in forum Southern Marauders
    Replies: 52
    Last Post: 06-28-2011, 06:13 PM
  5. Did the O-ring EATC repair...few questions.
    By 68Camaro in forum Shop Talk
    Replies: 5
    Last Post: 05-14-2010, 07:48 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •