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While driving and disengage the cruise control it would not accelerate engine just revs

Tiny
CURTIS JAMES MOODY
  • MEMBER
  • 1997 FORD EXPEDITION
  • 4.6L
  • V8
  • 4WD
  • AUTOMATIC
  • 153,000 MILES
I was driving home when I started noticing that whenever I would disengage the cruise control it would not accelerate and just rev as if stuck in neutral. I would pull over and put in park, then put it back in drive and it would be fine. Then after the third time, it will not engage any gear now and when I try and go to put in back in park I hear a grinding noise come from in front of me under the dash. I think it might be electrical, but need help.
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Tuesday, November 27th, 2018 AT 10:48 AM

9 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

When you try to move the truck, does the speedometer move up and show speed?

It sounds like either the transfer case or a differential issue.

If you switch the transfer case from two wheel to four wheel does it move again?

Roy
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Tuesday, November 27th, 2018 AT 11:06 AM
Tiny
CURTIS JAMES MOODY
  • MEMBER
  • 5 POSTS
When I try to put the truck in gear, it does not engage so the speedometer is not going to move if the truck cannot. Switching from two wheel to four wheel does nothing. It happened after disengaging the cruise control.
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Tuesday, November 27th, 2018 AT 11:44 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
The speedometer can work if there is an issue after the transmission. If your issue is in the transfer case, the transmission could work but no power sent to the rear wheels.

The grinding is the key as it tells me the inside of the transmission is turning but nothing is getting to the wheels.

Roy
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Tuesday, November 27th, 2018 AT 11:47 AM
Tiny
CURTIS JAMES MOODY
  • MEMBER
  • 5 POSTS
So what would cause that to happen after disengaging the cruise control?
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Tuesday, November 27th, 2018 AT 11:52 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Looking at windows re e diagrams I see no connection to the cruise control.

Roy
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-1
Tuesday, November 27th, 2018 AT 1:43 PM
Tiny
CURTIS JAMES MOODY
  • MEMBER
  • 5 POSTS
So what is the noise coming from under the dash when I would put it in park? Also, the grinding only happens when putting it in park and does not come from the transmission, it comes from behind the dash.
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Tuesday, November 27th, 2018 AT 1:56 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
It may be coming up from the floor. The transmission is right there.

Can you upload a video with sound for us to hear?

Roy
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Tuesday, November 27th, 2018 AT 2:51 PM
Tiny
CURTIS JAMES MOODY
  • MEMBER
  • 5 POSTS
I will try.
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Tuesday, November 27th, 2018 AT 2:56 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, will be here.

Roy
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Tuesday, November 27th, 2018 AT 2:58 PM

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