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This topic was originally posted in this forum: Modified Tech Talk
Author Topic:   Powerglide shifting problems
dirtracer50
Member
posted April 24, 2004 12:26 AM     Click Here to See the Profile for dirtracer50   Click Here to Email dirtracer50     
Over the winter I built a new powerglide for my car and I've got problems. Low gear and reverse both work fine but It won't shift into high gear. I've pulled the valve body apart three times now checking and cleaning the valves including the one two shift valve. I tried putting vacum to the modulator and that didn't change anything. I've been through all my books and can't find the problem. This is the third one I've rebuilt and I thought I did everything the same as the first two that work great. Any suggestions would be greatly appreciated.


FASTLAP
Member
posted April 24, 2004 05:00 AM     Click Here to See the Profile for FASTLAP     
Ran into a similar situation a few years ago, turns out the valve body had a small crack in it. Just a thought. Can't remember how I found it, though.


autodoc999
Member
posted April 26, 2004 10:32 PM     Click Here to See the Profile for autodoc999   Click Here to Email autodoc999     
You may have sealing ring problem at the pump. When you assemble the trans and before you put the valve body in, air check high gear clutches. That will help eliminate a mechanical problem. If you still need help, You can call me at my shop 501-767-4414...Paul


Alltel
Member
posted April 27, 2004 06:11 PM     Click Here to See the Profile for Alltel     
If low and reverse are working, then it's a high gear drum problem. Did you check the endplay in it at the input shaft? If there is too much, the drum will walk off the seals and it won't go into high, or if the inside of the drum is worn, it will do the same thing. Either that or no fluid is getting up there to the drum. If it does this, more than likely the clutches will be fried in the drum.


dirtracer50
Member
posted April 28, 2004 05:17 PM     Click Here to See the Profile for dirtracer50   Click Here to Email dirtracer50     
Thanks for the reply's guys. I checked the high gear clutches with air and they are working with air. The problem is it doesn't even try to shift. I did check the endplay and I put new sealing rings on the pump to drum. I was told you can get rid of the governor does anything need to be plugged to do this? Thanks for the help.


autodoc999
Member
posted May 11, 2004 10:11 PM     Click Here to See the Profile for autodoc999   Click Here to Email autodoc999     
Dirtracer50 check your PM


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