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1997 XLT noise when accellorating

Discussion in 'General Explorations!!' started by tenikiwon, October 10, 2002.

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    1. tenikiwon

      tenikiwon Elite Explorer

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      This has been puzzeling me for awhile.
      I don't remember it this did it when I bought it a year ago but....

      When accelerating from a stop it sounds like the auto 4WD is clicking in or engaging. Also sounds similar to taking up slack in the driveline.

      Anyone have a clue where this is coming from.

      It's a '97 with 84,000.

      I've heard many things related to auto 4 engaging. Everything from Tranny to tires.

      Also, I've noticed this recently. When stopping I get a noise as well. Almost like its dropping into first (hard).

      Does this sound like it's time to go tranny shopping?
       
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    3. Opera House

      Opera House Well-Known Member

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      I bought a 97 W/100K

      and it sounded funko. Went to drain the transfer case to put new Mercon in and only a pint of nasty looking stuff came out. There is suposed to be 1 1/2 quarts! The rear shaft seal had been leaking. Tbe car must have been power washed because there was no evidence of a leak. I did a drain and fill twice a week apart and now everything is fine. With low fluid the clutch will drag. Transfer cases are often ignored till it is too late.
       
    4. Yomie

      Yomie Well-Known Member

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      you might wanna check your u-joints also...front and rear
       
    5. tenikiwon

      tenikiwon Elite Explorer

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      I know this is going to make me look dumb but. where do you look and how do you go about check'n the T-case. I haven't look too hard and thought you might give me the quick answer.

      Is this a quick easy fix and/or a regualr maint thing I should be doing?

      How do I check?

      How do I replace?

      Easy or mech fix?

      Thanks
       
    6. tenikiwon

      tenikiwon Elite Explorer

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      Also, and I'll have to check this again. I don't think it does it in 4WD only Auto?

      I'll also check in 2WD. I've pulled the fuse before and I think all was quiet. I'm going to do the switch mod and I'll let you know. Hopefully tonight.
       
    7. Opera House

      Opera House Well-Known Member

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      Checking transfer case

      Might as well just do a change for $3. It takes standard Mercon/Dexron III. On the back side there are two plugs with a 3/8 inch square hole that a standard ratchet fits in. The lowest one drains it out and you fill through the upper one till it over flows. I use one of the pump oil cans with the nozzel removed to fill mine. Up by the fill hole there is a black piece of plastic with two wires. This is the speed sensor and believe it or not it just pulls out. Held in by only an O-ring. Doesn't sound real "off road." It has a metal tip which is magnetic and collects metal particles. Clean this because a dirty one can fool the computer and cause the 4WD to come on.
       
    8. dogfriend

      dogfriend Human-Animal Hybrid

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      Re: Checking transfer case

      The driveshaft speed sensor is supposed to be held by a 8mm bolt in addition to the o-ring. Is your bolt missing?

      The sensor is magnetic because its a Hall Effect device. It uses the change in the magnetic field (caused by the toothed ring on the shaft) to determine the speed of the driveshaft. I suppose if you had a lot of particles on the sensor, it might change the signal. In this case I would check the front driveshaft sensor also.
       
    9. dogfriend

      dogfriend Human-Animal Hybrid

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      I think your stopping noise might be a sticking driveshaft slip yoke.

      http://www.explorerforum.com/forums/showthread.php?s=&threadid=53279&highlight=slip+shaft

      I have a similar noise, intermittent which feels like the trans is shifting hard. I think it might be the slip yoke, but I haven't done anything to try to fix it yet.
       
    10. tenikiwon

      tenikiwon Elite Explorer

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      More Info

      Ok, tonight I drove it around regular and had the noise all the time. I fliped to 4WD and nothing. Then I pulled the fuse to disable the 4WD system and nothing. Sounding like it must have something to do with the AUTO 4WD system.

      It does sound like loose or worn U-joints because it's several quick thumps when you accelorate. The slower you start out the less noticealbe. I almost thought that it felt like it was following the driveshaft back, but I was prolly just make'n it up in my mind seeing as though it didn't do it in 2WD.

      Thanks for all the help. Hopefully next weekend I'll get a chance to check the fluids and U-joints. Is there a special way to check the U-joints. Or do you just grab the drive shaft and see if is has play???
       
    11. tenikiwon

      tenikiwon Elite Explorer

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      I searched the slip yoke prob. and that sound like the first and easiest fix. What type of gease does that use???

      Where's the best place to get it.

      Or should I talk with my gear-head friends and mechanics and see if they can squeeze me in??
       
    12. TPLYNCH

      TPLYNCH Well-Known Member

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      I think it's lithium? grease. Is mentioned in the slip yoke threads. any autoparts store should have it i believe.
       
    13. tenikiwon

      tenikiwon Elite Explorer

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      Problem Solved

      When researching another problem I came across my old post and just thought I'd tell everyone that it was the T-case fluid.

      Now onto Problem #2
       

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