Question about Ford F-150

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My 4WD unit is a manual shift on the Floor. 97 f150 .The 4x4 light on the Dash is always on and just before it does this it goes off for a split second.While driving down the Road in 2wd it tries to shift into 4wd High by itself. Makes a grinding noise for about 10 seconds then stops and the 4x4 light comes back on. Why is my 4x4 light always on when the truck is in 2wd ? and what is causing it to try and shift into 4wd by itself? And what is the grinding noise when it does it. And how do I fix it?Please Help. Thanks, John

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  • Ford Master
  • 2,307 Answers

Your linkage is out of adjustment .it is not coming Al the way out of 4x4 and that is the grinding you are hearing.

Posted on Apr 11, 2017

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Posted on Jan 02, 2017

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SOURCE: 4x4 low is stuck on?

Hi,

Try reversing for around 10 yards, then deselect 4WD.

Doing a few snake turns on soft ground may help too if it has wound up the transmission.

If this does not work, it may be a stuck solenoid.

Posted on Jun 21, 2008

  • 1 Answer

SOURCE: 4WD shift problems

Some one told me to unhook the batery for half an hour then hook it back up and try it. Well it worked,no more shif problems.

Posted on Nov 29, 2008

  • 1 Answer

SOURCE: 03 Chevy Tahoe Z71 - 4wd not functioning

my son has one and his did that and it was a fuse he put a new one in and it is working good now

Posted on Jan 22, 2009

  • 33 Answers

SOURCE: I have a 2003 chevy blazer LS, 2-door 4wd w/

try putting in nuetral and then shift into high gear . if still does not work sounds like the 4x4 acctuator is bad

Posted on Jul 01, 2009

sscullys
  • 984 Answers

SOURCE: Transfer case is making a grinding noise in 2wd,

Depending on how long the grinding has been going on, the IWE ( integrated wheel ends ) might need to be replaced.

The problem that causes the symptoms is either cracked vac lines from the IWE solenoid, or a faulty IWE solenoid.

Check the vac lines to the IWE, this is the block diagram of the setup
0ad583b.jpg

Use a visual inspection and vac tester ( might vac with a gauge on it ) to test the lines.

Posted on Nov 29, 2009

Testimonial: "great! It was cracked vacuum lines. Thanks for the feedback!"

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1 Answer

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Ok, this is probably going to sound greek if you have no automotive experiance, so here goes:

There are 2 possibilities I can think of at the moment depending on your 4wd system, however there are several things that can cause this

If you have a Push button 4wd (you push a button or turn a knob) the system engages using actuators or sylinoids meening you turn the 4wd on, the switch sends power to the selector option (high and low) and the 4wd light on the dash. the selector determines where the actuator/silenoid engages (either high or low) in the transfer case. However the actuator or silenoid can be faulty and yet the system will say 4wd is on because the switches still sending power to the 4x4 light

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