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Old Sep 14, 2003 | 03:49 PM
  #1  
Capt_Dunzell's Avatar
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slamming into reverse

91 F250 4x4 5.8 Auto

When I shift into reverse it slams hard......always feel like its goint to break something.

Whats to check? Is there an adjustment somewhere, or does it need to go to the shop?

I just dropped a replacement computer in it and the slamming went away for a day, but this morning it was back.
 
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Old Sep 14, 2003 | 05:58 PM
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slamming into reverse

thats just a common problem with all our trucks. you just have to get used to it. mine has always slammed into reverse. change the u joints and transmission fluid and it still does it.
 
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Old Sep 15, 2003 | 02:57 PM
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slamming into reverse

Sure seems a hard slam to be normal.
Guess it hasnt broken anything yet......suprisingly.
 
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Old Sep 15, 2003 | 03:22 PM
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slamming into reverse

My '87 302 auto does the same. There is also a slight delay when shifting from reverse to drive. I just live with it.
 
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Old Sep 15, 2003 | 05:05 PM
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slamming into reverse

Which transmission are you guys talking about here? Haven't had my truck long, but my E4OD hasn't done anything like what you are saying here.
 
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Old Sep 15, 2003 | 05:09 PM
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slamming into reverse

Mine sometimes slams into reverse. I hate it when it does that. A while back I read about an updated PCM thats supposed to take care of this, If you have the E4OD.

If you have the AOD then you can try adjusting the transmission TV cable at the throttle body.

http://tnmotorsports.com/aod.htm
 
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Old Sep 15, 2003 | 06:22 PM
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slamming into reverse

Mines the E4OD as well. Mine does it all the time, so hard you almost get whiplash.
 
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Old Sep 15, 2003 | 07:22 PM
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slamming into reverse

Moved to transmission forum.
 
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Old Sep 15, 2003 | 07:28 PM
  #9  
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slamming into reverse

Start with the basics:

1. Fluid level.
2. Fluid condition ( should be bright red not brownish).
3. Idle speed. Should be 6-8 hundred rpm warm.
4. Throttle position sensor. adjusted properly?
5. Check the throttle body area for leaks and sludge buildup.

Many engine sensors out of whack can affect E4od transmission performance.

Are there any other problems?
 
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Old Sep 16, 2003 | 11:50 AM
  #10  
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slamming into reverse

My '94 used to do that really bad till I upgraded to a '95 MLPS. Fixed the neck breaking upshifting problems to. Good luck......Van
 
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Old Sep 16, 2003 | 04:13 PM
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slamming into reverse

My '94 used to do that really bad till I upgraded to a '95 MLPS. Fixed the neck breaking upshifting problems to. Good luck......Van
MLPS manual lever position sensor
Interesting, what made you decide to do that? Is it a known fix? How did you adjust it? Someone in another thread said the connector is different on some years, did you have to change yours?
 

Last edited by HardScrabble; Sep 16, 2003 at 04:19 PM.
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Old Sep 17, 2003 | 07:23 PM
  #12  
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slamming into reverse

My fluids and everything else mentioned are good
 
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