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Ford Ranger 4x4 Problems



  • wiwallywiwally Posts: 5
    You are both right (and wrong) When you activate the 4x4, YES the actuator turns the tcase motor to lock tcase in 4x4. But that actuator is not responsible for locking your front hubs. Your front hubs are locked in via vaccum created by your engine. My ranger is an '01 wich has a different setup (no more vaccum hubs, becasue Ford finally realized they were nothing but trouble!) Your Ranger should have a rubber vaccum line coming down from the engine compartent to provide vaccum to the hubs. check this line for cracking/chaffing. what would be the best would be to manually put vaccum to the hubs and see if they lock. I don't know all the specifics, but i do know a certain amount locks and another amount unlocks them. i don't know where the lines connect exactly either... but your problem lays in the front hubs not locking. When i was looking for info on my '01 not engaging 4x4 i found all kinds of info for your model year....keep looking you'll find the specifics ;)
  • dper299dper299 Posts: 19
    To be more specific on my question:
    How does/is the front diff engauged ?
    I lifted the whole vehicle in the air, started the truck , put it into 4wd and everything turned with the exception of the wheels. But when I put the vehicle down and locked into 4wd the driveshaft is locked in and turns but the Cvs/front axles can spin free
  • wiwallywiwally Posts: 5
    Sorry took so long...only get my email @ work (and work the w/e shift!)
    I worked on an '01 which has Ford's latest setup (cv front axles with no disconnect other than the t-case) My parents had a '94 with auto locking mechanical hubs (still different from yours). You have managed to get a model year with what i would consider (and many, many others!) to be Ford's worst idea! (SORRY, but its true!) Here's what i found on your system:
    Your hubs are called Pulse Vaccuum Hubs (PVH) and are found on model years '98-'00. Basically vaccuum is supplied to each of the front hubs, which locks them in. They work off a vacuum pump which is supposedly located under your air filter box. Check to make sure it is working; if it appears like its working go on to the vacuum line(s)? that lead to the front axle from the pump and check for any leakage. Next check the front hubs. The locking hubs are the black caps in the center of each from wheel…..they snap on and off..(hard to take off without breaking a few tabs, so be careful)..There are seals on these hubs, one or both may not be holding the vacuum created by the pump. If you have a leak anywhere, the hubs are rendered useless. Best bet is to replace with manual locking hubs or this will be a continuous headache. Search AVM hubs on the net, you’ll be able to find Manual lockouts for it.
    OR TRY THIS..... FOLLOW THE LINK (copy and paste if you have to)
    Let me know what you think! ;)
  • grumpy77grumpy77 Posts: 3
    what if 4wd hi works but 4low does not work
  • grumpy77grumpy77 Posts: 3
    goes into 4hi but not 4low is it switch or something else anyone have this problem before
  • mmcfee2mmcfee2 Posts: 2
    Mine is a 2001 and has the transfer case motor, no locking hubs.....If yours is the same, the fact that 4 wheel high is working tells me the transfer case motor is fine. That leaves suspision with the 4x4 module. The 4x4 module needs reprogrammed or is bad. It is located under the passenger's side kickplate. You can replace it yourself, if you can find one, but you probably don't have the equipment to reprogram it.
  • grumpy77grumpy77 Posts: 3
    thanx for the info i hear ford makes one that is already programmed is that true?
  • Have 1998 4x4 with vacume hubs. Cant find the tool to take them off. What a really bad design. Vacume hoses need replaced and if there broke your heater takes a crap to. Wheel bearing went bad and melted the hub. Can anyone tell me where to get the hub puller for these hubs.
  • mjumpermjumper Posts: 2
    I switched into 4x4 low yesterday and it won't release. Any suggestions ?
  • mjumpermjumper Posts: 2
    I saw all of the postings about the 4x4 and removing the fuse, did not work. The light on the dash does not go out and it is locked in low 4x4. Any suggestions ?
  • I have 90 model ranger that runs fine on the highway, but as soon as you hit the beach sand the temp gauge starts to climb. I have flushed the cooling system, I have even removed the thermostat. It helped some, I was able to get down the beach a little bit more before it boiled over.
  • ford4xnutford4xnut Posts: 1
    To shift into or out of 4low you must come to a complete stop, keep the brake pedal depressed, shift into neautral, then move selector switch. This is for electronic 4x4 switch with automatic trans.

    The proceedure for standard shift with electronic 4x4 will require the clutch pedal depressed instead of the brake pedal.

    Any trans with manual shift 4x4 generally requires complete stop, put trans in neautral, shift the transfer case into the 4 wheel mode, then shift the trans back into gear.

    If you encounter difficulty shifting the transfer case into 4x4, leave it in 2 wheel and back up about 20 ft, shift the trans into neautral while still rolling for about the last 5 to 10 ft, come to a complete stop then try shifting the transfercase into 4x4 mode. If you have the owners manual check for the proceedure described there.
  • cschwartz2cschwartz2 Posts: 15
    Check this out loganmd. I also have a 02 4x4 ranger. and of coarse my 4x4 does not switch into any 4x4 motion and the lights do not come on. So far I had my sisters husband look at it since he is a mechanic. He checked it all out and thought it was my transfer case motor. So I bought one put it in and still nothing. I have been trying to figure out this problem for about one year... so far. I did meet this guy on the street a couple of days ago. He said that his 97 problem was a switch on the firewall directly behind the motor and costed $400 to fix it. Now I'm having my brother-n-law look up what he can find at his shop about the switch. I'll let you know what happens. If you hear of anything or get yours fixed please let me know. I have been without 4x4 for two winters now. And it sucks to have people push me out and ask, isn't your truck a 4x4. I hate that!
  • brucelincbrucelinc Posts: 815
    The 4x4 control module is a common cause for this on these Rangers. No need to go without 4 wheel drive! The module is located inside the cab and it is an easy fix.
  • cschwartz2cschwartz2 Posts: 15
    Where in the cab is it? And do I need to replace the whole module, or flip a switch or what? Thanks for your feed back!
  • wiwallywiwally Posts: 5
    4x4 CM is located behind the lower kick panel on the passenger side, just below the dash (not on the firewall, but along the side, to the forward side of the door hinges) your prob sounds just like the issue i had. Module took care of it ($85 off ebay ;)
  • brucelincbrucelinc Posts: 815
    Yep, what wiwally said. I bought mine at a Ford dealer and I think it was around $150 but I don't remember for sure.
  • cschwartz2cschwartz2 Posts: 15
    Thanks guys, I will definitely try it out. Here's for hoping!!! In all I'm surprised that Ford did not recall this problem. Seems like everyone who owns a Ford Ranger with 4x4 has had some type of problem with it! Rediculous!!!!
  • TERZITERZI Posts: 1
    Hello all. My question is about a Mazda B4000. Seems my girlfriend hit a big pothole, and since then, the front end makes a loud roar while going down the road. Seems mostly coming from the driver side. Is it possible that it is stuck in 4 wheel drive on that side? Any suggestions will be appreciated! Thanks in advance!
  • fryguyfryguy Posts: 1
    Is it possible for the 4x4 module switch lights to be dark and still have the 4x4 engaged? I can hear the relay switching on the driver's side when I turn the switch but the lights do not seem to light up. I have a functional fuse in the correct spot.
  • 2003 ranger supercab 4x4 auto shift. when i shift into 4x4 and reach a speed of 30-50kms i hear a loud clunking noise u have any advice.
  • I have a 1997 ranger 4x4,auto trans w manual locking hubs.
    The fuse under the hood,I think it is 15 amp(might be 10 amp) for the 4x4 switch keeps blowing,even trying to install another fuse you get sparks,just plugging the fuse in.
    I was wondering what it controls,is it the 4x4 module under the dash?

    Also,do I need to drop the whole front defferential to change the u-joint next to it?or can I remove the cover and reach in there and do it that way?

    Thanks for looking.
  • I am working on a 2004 ford ranger 4 x 4, my four wheel drive is not working, I can remove the tires and manually force the hubs to engage and it it works fine and then I have to remove the tires to take it out of four wheel. It works fine when it is in four wheel, I have been told it is a vacuum hose causing the problem, I can't find a vacuum hose diagram to show me where to replace these hoses. Does anyone have a vacuum diagram or would it be something else? Thank You for all your help.
  • I have a 2000 ford ranger 4x4, 3.0 liter. When i shift into 4x4 high there is a hard snap and it feels as though you run over a deep crack in the road. This happens approximately every 10 seconds or so. when i shift back to 4x2 it happens one last time. If anyone can point me in the right direction I would greatly appreciate it, Thank-you.
  • tyca7tyca7 Posts: 1
    My 97 ford ranger auto won't shift into 4 wheel, lights come on and I can hear it click in but nothing else the tires don't go. the overdrive won't work either. I don't know if this is related or just a different problem
  • Is there any way to install manual locking hubs on a 1998 Ranger 4x4? I've had the electronic/hydrolic hubs fixed three time - they work for a while and then quit, usually when I'm on the beach! I'd have no trouble getting out of the truck to lock or unlock the hubs. Anything to keep it in 4 wheel while on the beach. Thanks for any help --
  • I am trying to find out if i can disconnect the front and rear drive shafts, remove the transfer case, and replace with a longer drive shaft to perform a 2x4 bypass function only.

    I am looking for feedback. This is what I want to accomplish, and here is where i am starting.

    I have had a few issues with the transfer case, and i do not have the cash to spend on a new or replacement transfer case. Is there any way to bypass the transfer case when it is COMPLETELY disconnected to any moving internal gears.

    It does not park when in park, the drive train up to the transfer case turns but there is a gear disconnected on the inside. it does not exhibit any transmission problems. just will not engage in the transfer case AT ALL.

    History: about a year ago, my 4x4 was damages and "stuck" in 4x4 High. so to save gas, i disconnected the front drive shaft assembly. i have not had any problems with noise, vibration, etc until about a month ago. The transfer case made a crunching sound (obviously not good) and I figured i will just drive it like a truck: into the ground.

    So now the transfer case is the disease. I want to bypass or isolate it, or if anyone knows where to egt the model below cheap, then I'll replace it.

    Ive got plenty of depot level manuals, I'm mechanically inclined. So please leave the stupid comments to the dumb girls who think they need 2 transmissions and "halogen" fluid.

    2001 Ford Ranger EXT-Cab 4x4 w/ 2" suspension lift
    V6 4.0L GAS
    Automatic Transmission and electronic 4x4 engagement.
    Transfer Case Model No.: 1L54-7A195-CC, SN: 6C-13-54-000-037

    US Army
  • bolivarbolivar Posts: 2,316
    I don't know much about 4 wheel drive, but I think I've seen lots of people that converted to manual hubs. Don't know brands, etc, but it seem to be an easy conversion. And, don't think it costs too much.
  • My has the same symptoms. Have you heard from anyone? rogerg215
  • my 4x4 stopped working, i changed the electric motor and that wasnt the problem, i checked the module and that dosnt seem to be the problem either. does anyone have a suggestion??
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