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Ford f150 2001 4x4 problem, acuator?

My 4x4 didn't work when I bought it! so I messed with it and realized my solenoids were bad, replaced them both and still no bag dang! I then followed my vacuum lines down to the actuator piece that moves when you switch to 4x4, it then worked when I was in 4 high but not 4 low. went inside for little while went back out to go test it then the opposite seemed to happen only 4 low works now

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  • patrick
    patrick Dec 28, 2013

    sorry i for got to mention i hit the actuator piece that moves with a screw driver and thats how i got it to work

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  • Cars & Trucks Master
  • 1,727 Answers

Look online for a mechanical actuator... more reliable. you'll fight that one until you're blue in the face

Posted on Dec 28, 2013

  • 3 more comments 
  • patrick
    patrick Dec 28, 2013

    ok, i will have to do that. do you think the actuator is what the problem really is? or maybe the motor on the TC? Thanks

  • Behind_Blue_Eyes
    Behind_Blue_Eyes Dec 28, 2013

    anytime you have vacuum controlling something you have issues. That would be my first guess is to check for cracked vacuum lines, then the actuator then the controls

  • patrick
    patrick Dec 28, 2013

    yeah its kind of a crappy design by ford, but when i check the vacuum lines can i just unplug the 4x4 enagage solenoid line and see if it has vacuum? or would that mess anything up? im new to these 4x4, once again thanks for your help and information!

  • patrick
    patrick Dec 28, 2013

    I forgot to mention when I hit the actuator shaft with a screw driver it worked for a little bit 4 low continues to work

  • Behind_Blue_Eyes
    Behind_Blue_Eyes Dec 28, 2013

    you wont hurt anything by unplugging it and checking for vacuum from the source. Just dont get run over please

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SOURCE: 1995 gmc jimmy 4wd high not working

sounds like it is loosing vacuum check all the lines for a crack even the engine lines will cause it to loose vacc. pressure. if it is not run to the vacuum reserve canister you may not have enough vacc. to hold the actuator in several times I just run new lines and that helped and not very costly.

Posted on Dec 25, 2008

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SOURCE: Front drive, 4 Wheel drive won't engage

Check the switch on the transfercase remove the vacume lines if there is oil in them the switch has to be replaced and the lines should be cleaned out you should also check under the battery tray to make sure the boot is not ripped that controls the leaver to engage the front axel

Posted on Feb 16, 2009

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SOURCE: My 98 s10 is stuck in 4 wheel drive low.

Pull the kick panel on the passenger side. there is a small box mounted there that is the computer that controls the actuator for the 4wd system. this is notorious for problems due in fact that the connector likes to pull out and away from the module. I had the same problem and the solution is simple.. take a long zip tie and get it between a few of the wires and around the module. tie it in and have a nice day.. it wont come off or try to pop out anymore and you should have no issues getting into 2wd, 4wd h, 4wd L.


Posted on Jun 21, 2009

robslac24
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SOURCE: 01 Chevy Silverado 4 X 4 not working. 4WD light

Having the same exact problem but with my 1999 escalade. Thought it was the actuator bought a new one installed it transfer case would engage but front end wouldnt lock. Took it out of housing left it plugged in got a friend to go through all the 4wd for me and the plunger never moved out the actuator. Checked my wiring harness which is a four prong ann it had one hot prong like it is suppose to. Traced wires even replaced dash switch same problem. Taking it to local dealership tom to have it checked for codes. I was told it could be the transfercase actuator even though its workin that actuator is what sends power to the front to engage the actuator to lock the differential.

Posted on Sep 16, 2009

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SOURCE: 2005 Ford F150, 5.4L V8, 4x4; The transfer case

Encoder motor located on the transfer case is usually the problem. It is the motor that shifts the transfer case.

Posted on Sep 28, 2009

Testimonial: "Will look into this and report .Thanks so much"

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