th400 wont hardly shift

Posted by jeremy sullivan on April 24, 2006 at 00:26:46 from (66.21.144.21):

i have a th400 in my truck and it wont shift till about 4000 rpms no matter what. it is not the original transmission and i am assuming it is out of an early 80s truck because it has the lockup converter. at first the person i bought it from didnt have the converter switch on the side hooked to a power source so i did that but there was no change. then i put a new vacume modulator on it and no change. i pulled the trans pan and changed fluid and filter and still no change. i checked the vacume line and it has vacume and isnt kinked bent or cracked. i dont know what to do other than take it out back and take a sledge hammer to it. can anyone help.

Follow Ups:

• Re: th400 wont hardly shift jeremy sullivan 20:35:33 04/26/06 (5)
  • Re: Re: th400 wont hardly shift jeremy sullivan 06:25:50 04/27/06 (1)
    • Re: Re: Re: th400 wont hardly shift Doc 2 10:07:48 04/27/06 (0)
  • Re: Re: th400 wont hardly shift Doc 2 21:19:56 04/26/06 (2)
    • Re: Re: Re: th400 wont hardly shift jeremysullivan 06:09:06 04/27/06 (1)
      • Re: Re: Re: Re: th400 wont hardly shift Doc 2 21:50:09 04/30/06 (0)
• Re: th400 wont hardly shift Doc 2 21:28:58 04/25/06 (0)
• Re: th400 wont hardly shift Andyrk 15:44:24 04/24/06 (0)

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