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a/c relay????

Discussion in '2001-2005 Explorer Sport Trac' started by mike_013106, May 28, 2008.

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    1. mike_013106

      mike_013106 New Member

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      anyone know which is the relay for the a/c fan for a 2001 sport trac? I cant figure out which one it is. the relay box doesn't say. please help
       
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    3. mike_013106

      mike_013106 New Member

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      ?????????????
       
    4. John_Rock

      John_Rock Elite In Memoriam

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      Here are scans from my 2001 Job1 Explorer Sport Trac Owner's Guide...


      [​IMG]
      [​IMG]
      [​IMG]
      [​IMG]
       
    5. rwenzing

      rwenzing Active Member

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      The blower relay is #55 in the distribution box. The high speed bypass relay for the blower control is in Aux Relay Box #1 under the MAFS on the air filter box.
       
    6. mike_013106

      mike_013106 New Member

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      what do you mean high speed? my a/c fan ony works when it wants too......which relay do i need to change?
       
    7. bdmaash

      bdmaash Active Member

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      Holly Fukk, ok if you need someone to read and translate Johnstone's post for you, try relay 56A
       
    8. John_Rock

      John_Rock Elite In Memoriam

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      Since he obviously doesn't have the Owner's Manual and I am not exactly sure what exact information that he needed, I gave him the whole thing. So now if the 56A relay doesn't fix his problem he has more information to look at and try.
       
    9. mike_013106

      mike_013106 New Member

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      I just chand 56a relay and its still not working?...which should I change next?
       
    10. mike_013106

      mike_013106 New Member

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      I just 55 and it still not working.
       
    11. mike_013106

      mike_013106 New Member

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      the rear a/c blower works just the front doesn't.....what should I do?
       
    12. bdmaash

      bdmaash Active Member

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      WTF is wrong????


      first post:anyone know which is the relay for the a/c fan for a 2001 sport trac? I cant figure out which one it is. the relay box doesn't say. please help
      this post indicates everything is working, but A/C isn't cooling the air that's blowing in the truck.

      second post:?????????????
      this post justs shows, you're impatient, when your'e not getting free advice fast.

      third post:what do you mean high speed? my a/c fan ony works when it wants too......which relay do i need to change?
      Do you even understand what you just said?

      fourth post:I just chand 56a relay and its still not working?...which should I change next?
      Randomly changing parts when you don't know what the problem is just stupid.

      fifth post:I just 55 and it still not working.
      This problem has made you crazy, your english language skills have gone to shi t.

      sixth post:the rear a/c blower works just the front doesn't.....what should I do?
      Oh, now you're talking about blower motors???????


      rear air conditioning blower works, front doesn't??????

      So you are trying to say your blower motor doesn't work when it is set to air conditioning?

      Does the fan (blower motor) work on other setting than air conditioning?

      if the fan works only at high speed - it's the blower motor resistor
      if the fan doesn't work at any speeds, it may be the blower motor.

      Right now from your random questions, it's possible you blower motor might not be working.

      Try and explain your problem first then ask for solutions, instead asking for solutions for what might be your problem.
       
    13. mike_013106

      mike_013106 New Member

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      first post:anyone know which is the relay for the a/c fan for a 2001 sport trac? I cant figure out which one it is. the relay box doesn't say. please help
      this post indicates everything is working, but A/C isn't cooling the air that's blowing in the truck. there is no air blowing from front just the back is working

      second post:?????????????
      this post justs shows, you're impatient, when your'e not getting free advice fast.

      third post:what do you mean high speed? my a/c fan ony works when it wants too......which relay do i need to change?
      Do you even understand what you just said? yes(it works sometimes)

      fourth post:I just chand 56a relay and its still not working?...which should I change next?
      Randomly changing parts when you don't know what the problem is just stupid. if ur not gonna help why post

      fifth post:I just 55 and it still not working.
      This problem has made you crazy, your english language skills have gone to shi t. u serious?

      sixth post:the rear a/c blower works just the front doesn't.....what should I do?
      Oh, now you're talking about blower motors???????


      rear air conditioning blower works, front doesn't??????

      So you are trying to say your blower motor doesn't work when it is set to air conditioning? no air comes out when its set on anything...just the back works

      Does the fan (blower motor) work on other setting than air conditioning? no

      if the fan works only at high speed - it's the blower motor resistor
      if the fan doesn't work at any speeds, it may be the blower motor. maybe its the motor

      Right now from your random questions, it's possible you blower motor might not be working.

      Try and explain your problem first then ask for solutions, instead asking for solutions for what might be your problem. man I just wanna fix my air....how can I find out if its the blower motor? and is there 2 blower motors?(one for the front and one for the back?)
       
    14. bdmaash

      bdmaash Active Member

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      man I just wanna fix my air....how can I find out if its the blower motor? and is there 2 blower motors?(one for the front and one for the back?)

      I still don't know what the problem is, other than something may not be working with the HVAC system, it's never been explained yet.

      anyways to answer the latest random(?) question:

      yes, there are 2 seperate blower motors.

      If there is no air (not sure what "air" is - air circulation/air conditioning) from the vents.

      I'll assume air circulation for now.

      Set front fan to middle speed, set heat/cold switch to middle, set vent switch to defrost (windshield), there should be air blowing on the windsheild through the vents.
      If no air is blowing, it's you blower motor, or blower resistor, or maybe a fuse.
      If the air only blows at high speed (4), then it's the blower resistor.

      Edit:I just looked over Johnstone's post above, and it can't be the fuse since fuse 6 (driver's side compartment) gives power to both front and rear blower motors.
       
    15. rwenzing

      rwenzing Active Member

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      OK, so the rear blower works but the front doesn't.



      Front HVAC Blower:

      The circuitry for the three lower blower speed positions goes through the resistor block.

      The highest speed switch position bypasses the resistor block using the High Speed Fan Control Relay in Aux Relay Box #1 near the air filter box.

      If NONE of the front blower speeds work, it is probably caused by one of these two: Blower Relay #55 (apparently already replaced) or fuse #16 (40amp) in the underhood electrical distribution box. All that's left after that is the wiring, grounds and the blower motor itself.

      [Forget about 56A - it is for the A/C compressor clutch, not the blower.]
       
    16. mike_013106

      mike_013106 New Member

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      "All that's left after that is the wiring, grounds and the blower motor itself"

      should I just take it to a electrical shop? caused I changed all the relays already. (it didnt just stop working.....it would work sometimes and sometimes not....now it dont work at all.
       
    17. bdmaash

      bdmaash Active Member

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      from your last post title: "All that's left after that is the wiring, grounds and the blower motor itself" this is the assumption made:
      - you tested the fan on all speeds an it didn't work

      so

      the blower motor bearing is probably gone(it's a bushing not really a bearing). The fix is to replace the blower motor, the intermittent operation was probably the armature of the motor being properly aligned sometimes or not.
      Any competetant mechanic should be able to remove the 3 or 4 screws and electrical connection to replace the motor.

      Replacement of the motor is all based on assumptions, since no questions were answered, unless you're posting to multiple threads/forums and assuming we read/subscribe to them all.
       
    18. mike_013106

      mike_013106 New Member

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      does it have 2 blower motors? cause the rear a/c works fine...
       
    19. bdmaash

      bdmaash Active Member

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      yes 2 independent motors.
      it's sort of funny how you say the rear a/c works.
      - so does the front heat work, and only the front a/c doesn't work?

      You should try and find a haynes or chiltons or whatever service manual. A lot of these types of repairs are covered in them.
       
    20. JonAlthoff

      JonAlthoff New Member

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      blower motor

      Mine is doing the same thing. Last Friday I went to leave and the blower motor would not turn on. After driving home and letting the truck sit for a bit I tried again and the blower motor started up. It worked fine for several days and stopped and started here and there. Today regrettably it has stopped working all together. I have found replacement blower motors at Advance Auto Parts and Autozone. Neither have the squirrel cage, retaining clip or the gasket. They are $39.99 at both. I went to a Ford dealer and they want $141 for the blower motor. My Explorer has 186,000 miles and I figure it's worn out. I took it apart and cleaned out the dust. Probably from the bushing. It's nice to see all the dust combined with the water on the evaporator I think it is.

      Any suggestions on where to find a motor or making a gasket for an after market replacement? I am guessing or hoping the resistor is good. Should I consider replacing it first?
       
    21. bdmaash

      bdmaash Active Member

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      "Any suggestions on where to find a motor or making a gasket for an after market replacement? I am guessing or hoping the resistor is good. Should I consider replacing it first? "

      $40 is good price for the motor, unless your truck is only worth a few hundred dollars, then it's too much.
      If it doesn't come with a gasket and the old one breaks, just get some thin weatherstripping foam tape.
      If the motor works fine/consistently on high speed (max), and doesn't work on other settings then it may be the resistor.
      The resistor is probably more expensive, but I've never looked into pricing.

      the "squirrel cage" should be held on with a spring clip, so it's easy to transfer over to the new motor.

      The problem I found with blower motors is that they use a bushing instead of a bearing (sealed), the bushing wears out and the armature (shaft of motor) drops so it's not centered anymore and then the motor doesn't spin freely.
       
    22. JonAlthoff

      JonAlthoff New Member

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      I smacked the motor later that night with a set of channel locks and it fired up. I replaced the motor yesterday. The gasket came off with only one break and it was fine to re-use on the new motor. The clip doesn't seem that great but it's ok. Motor is working fine again without too much trouble. I also picked up some weatherstripping before reading the reply today but it was not needed.
       
    23. vikingswede

      vikingswede New Member

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      Figured this might be a good place to put this...
      My blower only works at HI, so I assume it's the resistor that needs to be replaced. To be sure I want to inspect and check it so I started looking in my Haynes repair manual. The section dealing with the blower motor resistor is good enough but the illustration they refer to for locating the resistor panel is missing!

      Not being much of a mechanic I don't want to go doing things without knowing where to look - so... Can anyone please tell me where I can find the blower motor resistor?

      I know it's supposed to be located on the heater housing next to the blower motor, but not knowing what to look for, it's just not that easy... Anyone who can explain or maybe even post a picture, I'd be VERY happy.
       
    24. vikingswede

      vikingswede New Member

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    25. Creef412

      Creef412 New Member

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      My blower functions intermittently also (A.C.C). good for a couple months then out of nowhere I get nothing for a few days before magically working again :\.

      Currently it isn't working which brought me to this thread. From what bdmaash said it sounds like the blower (shaft) is going. I'm gonna try hitting (tapping) it with a hammer later to see if she'll start kickin again. If so I’ll look for a replacement.

      I replaced the blend door servo back in the winter when I wasn’t getting any heat (brrr), but that doesn’t help when the blower isn’t working.
       
    26. BeastMode843

      BeastMode843 New Member

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      yeah...

      Mine did this same thing. I went to the local junk yard and got a used switch(the controll with the 3 dials on it/where you would turn your a/c ON). Installed it right there in the parking lot and drove home with a/c again. I am not saying that your problem is the same, but maybe it is, worth a try. Cost me like $10 and 20 minutes.
       

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