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Slippage at certain MPH Slippage at certain MPH
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  #1  
Old 07-03-2004, 03:29 PM
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Join Date: Jul 2004
Location: Athens, GA
Vehicle: 1997 Ford F150
Posts: 1
Slippage at certain MPH
I have a 1997 F150 with the 4.6L. I have noticed that around 40 mph the trans gets real jumpy and it also does it around 70 mph. As soon as a certain mph is reached though, it goes away. Say maybe 2-3 mph higher. What causes this and should I be worried?

The truck has 114K miles on it. I have owned it for 3 years.

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  #2  
Old 07-03-2004, 06:51 PM
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Join Date: Oct 2003
Vehicle: 2003 Ford F150
Posts: 56
tranny gets jumpy? are you sure it is the tranny, not the engine?
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  #3  
Old 07-07-2004, 07:43 PM
Junior Member
  
Join Date: Nov 2001
Vehicle: 1999 Ford F150
Posts: 7
I've had a similar issue. It's a large clunk as if the transmission starts to shift then doesn't. Feels like you pull it into neutral then back into drive quickly. Tends to happen only in hot weather after you drive for a while. If you can figure it out , let me know. I've been working on it for a year. ALthough, for a while I suspected an ignition problem I am now back on the transmission.
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  #4  
Old 08-02-2004, 03:18 PM
Account Suspended For Violation of Terms of Service
  
Join Date: Aug 2004
Vehicle: 1994 ford f-150
Posts: 260
transmission slippage
i heard somewhere that it might be a sensor. like a TR something sensor that can go bad.
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