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How to: Prevent a Fire Hazard!

Discussion in 'Stock 1991 - 1994 Explorers' started by gmanpaint, October 2, 2010.

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    1. Currency

      Currency Active Member

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      Interesting post Gman, glad everything worked out for you.

      Will have to give my a quick once over and check for stuff in there. Had issues with my blower in the 2010-11 winter and ended up changing out my relay. It only wanted to work on high most of the time, but on lower speeds it would work when it wanted too.
       
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    3. Anime

      Anime EF YEAH!! Elite Explorer

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      Just did this...didn't take too long. With a cold air intake, you don't even have to remove it, and can just remove the screws and leave the connectors attached to the blower and resistor.

      I was still surprised at how much stuff there was in there, and that it hadn't started a fire in all these years. There were pine needles in the resistor wires, and lots of leaves. Maybe not a lot considering it's never been cleaned since it was new.

      Maybe the Ford engineers put the resistor there with the intent it would burn up such debris? Seems to have worked that way on mine, there was a lot of small burnt up bits under the resistor. If rain water gets in there and washes them down a drain exit, it could work.

      Be careful when poking around in there though, I messed up some of the evaporator's fins with the vacuum hose tip trying to get all the small stuff in the bottom. A smaller flexible hose taped to the vacuum hose would have worked better and probably not messed up the fins.
       
    4. gmanpaint

      gmanpaint Torsion Bar Free Staff Member Moderator Elite Explorer

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      Knowing this could happen just gives some heads up, and some peace of mind to owners. The shock of seeing smoke coming out of the vents can catch you off guard, and scare the pants off someone when it does happen. That in itself can be dangerous to a drivers reaction from thinking they are on fire. Also an owner might think they are stranded for fear of driving the vehicle, until they find out what the problem is.

      This thread will hopefully ease (or scare) some minds.

      I am thrilled, some of you have taken the time to do this. :)
       
    5. Harpua216

      Harpua216 Active Member

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      wow... thanks for the heads up!
       
    6. backfrmcolorado

      backfrmcolorado Active Member

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      Well to late for me...already had a small fire and now no low speeds for my heat. Thanks for the how to thread. Defiantly going to be my weekend project.
       
    7. jp1985

      jp1985 New Member

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      Thanks for the info i cleaned mine out tonight not only was it good for the sake of safety but it also made a good father son time for me and my boy.

      Also found an unplugged box that says eec test one it not sure what that means or where to plug it back in at?
      thanks again.

      Jp1985
       
    8. WVUexplorer

      WVUexplorer New Member

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      So this just happened to me and while it was smoking I sat there and thought 'this probably has something to do with that prevent a fire sticky I'm always to busy to read'. Thanks for the write up I'll be doing that in the morning.

      Oh and jp1985 that eec test thing is a port were someone would plug a code reader to get engine codes. It doesn't plug in anywhere but it should have a cover that protects the inputs.
       
    9. Roadrunner777

      Roadrunner777 Well-Known Member

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      When taking ownership of a 1st gen Exp... this and the cracked fan blade are really, I think, required reading. Easy fixes to prevent major issues. Too bad there is not a super-sticky.
       
    10. arcblue

      arcblue New Member

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      I just did this job today as the blower was making a ticking sound like a leaf had got in there. After removing the blower, I saw just one leaf in the housing. It looked completely clean at first. But after feeling around in the resistor housing, I found pine needles, lots of leaves and even a wasp packed in there. I cleaned it with my fingers and a small socket wrench to reach around the corner of the housing, as the compressed air wouldn't blow it all out.

      I am so thankful for this information. I wouldn't have known about the resistor and checking in that cavity otherwise. I just wonder where exactly the stuff gets in - it must be a fairly sizeable opening.
       
    11. gmanpaint

      gmanpaint Torsion Bar Free Staff Member Moderator Elite Explorer

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      Falls thru the slots below the windshield.

      It needs a mesh screen to prevent debris from entering. Too bad that would be a PITA to accomplish.
       
    12. sirhk100

      sirhk100 Well-Known Member

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      Excellent thread, picked up a '91 on sat and 99.999999999% this is what happened on my 2 hr drive home about 10 minutes from pulling into my house. I knew it had to be something to do with the blower so I simply unplugged everything associated with it and drove the rest of the way home. Pulled the blower out on Sat night and vacuumed out quite a bit of stuff. Didn't know about the resistor assembly though and honestly, I think the multi stages worked before the smoke bomb went off but now it's off or full on and nothing in between so I'm assuming it burned out the resistors in the fire. I'll pull it back apart tonight and examine for replacement.

      Thanks for the pictures and a good thread!!! I've got another expo I can probably pull the part out of which is convenient cause it's going to act as a parts vehicle anyways during my build and then eventually end up scrapped.
       
    13. Snort

      Snort Member

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      From these photos it looks like you're able to remove the debris that's been sucked through by the blower, but is there anything else that collects the stuff for example directly under the air intake cowling at the windshield? I'm wondering if there is a collection box under there with a drain hole that gets plugged up.
       
    14. HarryMcW

      HarryMcW New Member

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      I really need to do this, see my other post with the aircleaner, I'm sure this area is chock fill as well. It does have a slight "toasty" smell after it's warmed up, not unpleasant, but don't want a fire.
       
    15. mr cribb

      mr cribb US Army Retired Elite Explorer

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      I just cleaned mine out this weekend. I however am switching to the 134a A/C system and pulled all the components from a 94 X, there wasn't much in the A/C box of the 94 versus the box off my 92 (that one was FULL!!)

      I only cleaned minor stuff out of the 94's box.
       
    16. HarryMcW

      HarryMcW New Member

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      Finally got around to looking at this, yes, it was packed pretty full...
      [​IMG]

      [​IMG]

      [​IMG]
       
      Last edited: December 10, 2017
    17. gmanpaint

      gmanpaint Torsion Bar Free Staff Member Moderator Elite Explorer

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      Glad you decided to do this, yours was primed and ready for action.

      This is the time of year this should be done. Good job sir.
       
    18. natenkiki2004

      natenkiki2004 Blue Bomb!

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    19. sanek502008

      sanek502008 New Member

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      Когда я снял вентилятор печки,там была мёртвая мышь!
       
    20. turboranger91

      turboranger91 Active Member

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      Did this the other day after snelling smoke. . Amazing how much crap gets down in there!
       
    21. TomTomTom

      TomTomTom New Member

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      Thanks for the explanation, this was really helpful! Just worked on my 94 XLT today after some serious smoke Monday, pretty clogged.

      One question: I didn't have the best of all tools and ended up disconnecting the two rubber hoses in between the blower and the other thing that looks like it's wrapped in aluminum foil to better reach the screws. Created quite a mess, not sure what liquid was in there...?
       
    22. gmanpaint

      gmanpaint Torsion Bar Free Staff Member Moderator Elite Explorer

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      That fluid was engine coolant. Those hoses are connected to the heater core under the dash. Make sure you top off the radiator with fresh anti-freeze.

      Your going to have to Burp the system to get the air out. Trapped air can stop coolant from cycling properly, resulting in the engine over heating. Any time air is introduced into the coolant system, these engines have to be bled.
       
    23. TomTomTom

      TomTomTom New Member

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      Thanks for your fast reply and help!
       
    24. iLoveMyExploder

      iLoveMyExploder Active Member

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      wow!

      this explains all the reports of unexplained fires I read about online. people were blaming ford saying all kinds of mean things.
       
    25. 96EXXLTinCO

      96EXXLTinCO Elite Explorer

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      You would know far better than me Greg, but in my eclipse my heater would blow cold at idle but get nice and toasty with just a little RPM. Was that way until I had the coolant reverse flushed. Pretty sure that got an air bubble out and the heater has worked perfect ever since.

      Just curious if that's another possible side effect of trapped air in these machines we love to hate?
       
    26. gmanpaint

      gmanpaint Torsion Bar Free Staff Member Moderator Elite Explorer

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      That can happen with low vac pressure at idle. The valve is opened by vacuum to allow the hot coolant into the core.

      But yes, trapped air will do that as well.

      I have witnessed an engine blow a head because of trapped air.
       

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