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#1
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More Transmission Weirdness Need advise
I recently changed the valve body on a 93 SL1 because of extremely hash
shifting, with check engine code, and sometimes a strange squeal when shifting. I got a factory manual, and following all the steps, replaced the VB with one from 6th Planet. Alas, when I test drove the car, the problem was still there. The VB replacement had made no difference at all. I parked the car and had decided to junk it, but about a week later decided to take it for one last spin. This time the transmission performed perfectly and has continued to do so! What's happening here? Did the PCM have to reset itself to the new valve body or do I have some other, intermittent problem that's probably going to return? The tranny manual said to "reset the adaptives" after installing the valve body. Does this mean to disconnect the battery? If so, I did this before the first test drive when it malfunctioned, but not before the good test. Gary |
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#3
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You have to go through a relearn procedure. The instructions were in my new
VB but it consists of disconnecting battery, than driving through various shift and downshift cycles. Even if you don't do this it will eventually "learn" it's new parameters. Larry "Gary Compton" > wrote in message ... > I recently changed the valve body on a 93 SL1 because of extremely hash > shifting, with check engine code, and sometimes a strange squeal when > shifting. I got a factory manual, and following all the steps, replaced the > VB with one from 6th Planet. Alas, when I test drove the car, the problem > was still there. The VB replacement had made no difference at all. I > parked the car and had decided to junk it, but about a week later decided to > take it for one last spin. This time the transmission performed perfectly > and has continued to do so! What's happening here? Did the PCM have to > reset itself to the new valve body or do I have some other, intermittent > problem that's probably going to return? > > The tranny manual said to "reset the adaptives" after installing the valve > body. Does this mean to disconnect the battery? If so, I did this before > the first test drive when it malfunctioned, but not before the good test. > > Gary > > |
#4
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Thanks Blah Blah and Joe. Your response gives me some confidence that the
problem is fixed. Gary "Gary Compton" > wrote in message ... > I recently changed the valve body on a 93 SL1 because of extremely hash > shifting, with check engine code, and sometimes a strange squeal when > shifting. I got a factory manual, and following all the steps, replaced the > VB with one from 6th Planet. Alas, when I test drove the car, the problem > was still there. The VB replacement had made no difference at all. I > parked the car and had decided to junk it, but about a week later decided to > take it for one last spin. This time the transmission performed perfectly > and has continued to do so! What's happening here? Did the PCM have to > reset itself to the new valve body or do I have some other, intermittent > problem that's probably going to return? > > The tranny manual said to "reset the adaptives" after installing the valve > body. Does this mean to disconnect the battery? If so, I did this before > the first test drive when it malfunctioned, but not before the good test. > > Gary > > |
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