Trans Or PCM Prob?
06-19-2005 | 10:35 PM
#1
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From: Lakeville, MN
Trans Or PCM Prob?
Lately my trans has been doing wierd things. A few days ago I gave the car half pedal @ 37mph and it hit 1st gear causing me to almost rear end someone. Did the same thing the next day with even less pedal. Then yesterday it was the total opposite. I went WOT @ 20mph and it shifted into second. Insted of kicking back down or at least holding second the trans went into third @ 35mph while I was still under WOT. 
The */c was whinning away to try to recover the bogged down engine.
The */c was whinning away to try to recover the bogged down engine.
06-20-2005 | 03:23 PM
#4
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Fantastic 88, you will have to know whats going on with the PCM data to get an idea of where the problem may be... Sounds almost like the PCM is getting a confused TPS signal...
The PCM in your car is in totall control of the 4T65-E... If the trans is acting funky, as in not missing gears but shifting at the complete wrong time, Luging the engine, like the car has shiftitidis than hook a scantool up to it and see what kind of info you get from the TPS and VSS as well.... There may be some confusion for the PCM somewhere.. Good Luck
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The PCM in your car is in totall control of the 4T65-E... If the trans is acting funky, as in not missing gears but shifting at the complete wrong time, Luging the engine, like the car has shiftitidis than hook a scantool up to it and see what kind of info you get from the TPS and VSS as well.... There may be some confusion for the PCM somewhere.. Good Luck
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06-20-2005 | 03:52 PM
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Originally Posted by jr's3800
Fantastic 88, you will have to know whats going on with the PCM data to get an idea of where the problem may be... Sounds almost like the PCM is getting a confused TPS signal...
Maybe he could get nate to check it out?
06-20-2005 | 04:30 PM
#6
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From: plattsburgh NY
mine was doing that but now it isnt even shifting. I has no power and just hits the rev limiter. I think it is on its way out but i dont know. I am going to pray tonight it isnt because i dont have the money for it.
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