Valve Body Issues / Tranny Question
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Junior User
Joined: Jan 2004
Posts: 85
Likes: 0
From: Brea / Orange County (CA)
Valve Body Issues / Tranny Question
Can a valve body go bad and cause the trans not to want to shift from 2nd to 3rd gear?
In a tranny rebuild, is the valve body replaced as part of the rebuild?
I get the 2nd to 3rd gear error code and the only diagnoisis is that is has to be the valve body. Shift sensor and electrical is ok.
I have been told that it might by the PCM but that is supposed to be very rare?
In a tranny rebuild, is the valve body replaced as part of the rebuild?
I get the 2nd to 3rd gear error code and the only diagnoisis is that is has to be the valve body. Shift sensor and electrical is ok.
I have been told that it might by the PCM but that is supposed to be very rare?
Senior User
Joined: Oct 2004
Posts: 374
Likes: 0
From: Ridgecrest, CA
When I installed the Sonnax valve and Transgo shift kit, I found that the valve that was replaced was "side load" worn. The piston/springs for 2 to 3 shift were o.k. If you haven't installed a shift kit or Sonnax valve, now sounds like the right time. Try just the Sonnax kit (it comes with springs for the shift points) and pay close attention to all the pistons. I've also heard of the trans sensors going bad. I had one go bad on my 93'.
Elder User
Joined: May 2002
Posts: 627
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From: Claremore, Ok 74017
Have seen valve hang in the valve body from side loading, your valve body is usually rebuilt with the trans. I installed a factory tech valve body for 250 and would recommend it. or you can use a Brian truck shop valve body, someone else could give info on them.
Posting Guru
Joined: Dec 2004
Posts: 1,248
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I have a Factory Tech, too, and have been very happy with it. Owing to the fact that Jody will tune his chip for a BTS valve body, and Brian will tune the valve body to Jody's chip, I suspect the combination is better than my setup. I just doubt that it will be enough better to justify spending ANOTHER $250.
Unless I can get someone to buy this one.
Unless I can get someone to buy this one.
