2004 Ford F-150 No 4X4

Tiny
JKERR
  • MEMBER
  • 2004 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 10,700 MILES
Recently I have started to hear a rattling noise in the front end typically when I am in over drive and going up a hill before the transmission shifts down a gear. Since then I have noticed when I lock it into 4 wheel drive only the back tires are spinning. There aren't any noise out of the ordinary while in 4x4 other than the clicking noise when you first engage it, but I have heard that in the past. I was told that the rattling noise came from the front driver shaft rubbing on a heat shield that was bent, but I am now suspicious that there is much more wrong with the four wheel drive not working.
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Wednesday, September 1st, 2010 AT 9:11 AM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 107,922 POSTS
Is that the only time you hear the noise? You mentioned that the 4wd isn't working. Have you checked for power to the actuator on the transfer case?
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Wednesday, September 1st, 2010 AT 10:41 AM
Tiny
JKERR
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  • 2 POSTS
I hear the noise whenever I'm driving down the highway and there is more stress put on the engine (like going up a hill when the RPM's drop). I only hear it when it is in over drive. I just had a mechanic look at it a couple weeks ago and they didn't find anything other than a bent heat guard.
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Wednesday, September 1st, 2010 AT 11:43 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Did he check to see if the catalytic converter or resinator are in good condition? Many times the insides will come loose and they will rattle inside.

I wish I could hear it. I could tell you in a second. Try this. Take a rubber mallot and tap on the exhaust system to see if you can recreate the sound.

Let me know what you find.

Joe
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Wednesday, September 1st, 2010 AT 12:04 PM
Tiny
JKERR
  • MEMBER
  • 2 POSTS
The noise sounds like if you were to put a BB into an empty beer can and bounce it around.
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Wednesday, September 1st, 2010 AT 1:16 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 107,922 POSTS
Try what I said.
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Wednesday, September 1st, 2010 AT 1:20 PM

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