Just built my 4l60e, I have reverse but no forward. I went by the book so I don't understand what happened.all the areas that needed special tools I had someone do for me. New molded pistons, zpak, all new frictions.

What could be wrong?


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There are numerous things that could be wrong. Anything would only be a guess right now. Most likely something in the forward clutch area. Was the forward and over run air check good?

Frank

 

everything air checked great. I was thinking maybe the valve body bolts but I followed the paper that came with the rebuild kit.

 

If you're thinking a bolt is in the wrong place, I don't think that's your problem.

Frank

 

so pretty much what's my best bet? tear it out and apart again? I have no idea what i'm even looking for. This sucks.... the last one I built had no reverse now that's all I have in this one

 

Anything to check before I tear it out that would cause this?


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Did you air check the drum through the pump?

Frank

 

Yes. Everything tested good, so I think. I'm not skilled in this department lol


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Did you make certain the drums were all the way seated? Does it try to move backwards in neutral?

Frank

 

No it doesn't. I could have sweetie when I put it in park I felt the slightest engagement. May be wrong though


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Lol swore





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Put a pressure guage on it and see if you have pressure in any forward ranges.

Frank

 

Air tested before valve body install and it worked.


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Forgot the small input sun gear or whatever its called I forget.lol


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Well, um... That will definitely cause a no forward condition. Didn't you notice you had leftover parts after you got it together?...LOL

Frank