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4r100 reverse/neutral issue?? HELP

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Old Oct 20, 2010 | 10:47 PM
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AZ Elk Hunter's Avatar
AZ Elk Hunter
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4r100 reverse/neutral issue?? HELP

I have done a lot of searching and found one guy that had my same problem but he never recieved an answer so I am hoping that someone can help me.

Problem: When shifting into reverse, nothing really happen at idle. If I apply thottle, it will move but acts like the ebrake is on or like it is bound up. When I shift into neutral, it pulls forward like I put it into drive. BUT, it does not seem to respond to throttle. Shift to drive, 2, or 1 and everything is fine and drives fine. It also seems like the truck lunges forward when I shift it into park? I have recently performed a full flush on it about 4-5K ago. The fluid level is fine and looks good. I checked the linkage and everything seem correct. I also replaced the MPLS switch but it had no effect.

Any ideas? I hate to calling tranny shops because all they want to do it rebuild it.
 
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Old Oct 21, 2010 | 04:31 AM
  #2  
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Mark Kovalsky
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I'd rebuild it. There is nothing electrical that can do this. It seems that the forward clutch is not releasing properly. This means it's damaged, so it has to come out.
 
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