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1-2 shifts when hot

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Old 07-08-2007, 03:08 PM
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Default 1-2 shifts when hot

I just got my tranny rebuilt with all the upgrades wide bands servos transgo shiftkit and other stuff. my problem is when the car gets hot the 1-2 shifts just bounces of the limiter i dont know what would be causing this i had my computer tuned by pcm4less for the 3000 stall and i dont know if the shift points were moved or not but i dont recall on having them moved with the car having a stock motor. so i wonder what can cause this problem it is a 95 lt1 car as well.
Old 07-08-2007, 03:26 PM
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sounds like it may be a tuning issue
Old 07-08-2007, 03:51 PM
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tuning issue as in what exactly?
Old 07-08-2007, 04:09 PM
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Though some cars do other dont with a 3000 stall , You could be experincing what some people call stall wall , Which is a tuning issue related to your converter. How does the 1-2 shift feel at like 3/4 throttle ?
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Old 07-08-2007, 04:17 PM
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it fells snappy it chirps the tires but i sent the pcm to pcm4less for the stall wall so i wonder what could it be.
Old 07-08-2007, 04:21 PM
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You need to get it on a scanner and look at the data stream to see when the shift is being comanded or if its being comanded first. Most trans shop will have something like the snapon SCANNER that can look at the data stream .
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Old 07-08-2007, 07:24 PM
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If indeed it is a tuning issue you should have your pcm tuned by someoned familiar with those symptoms. It should be data logged in order to determine whether or not the shift command is being issued and when is it being issued.... only then can adjustments begin to be made with any hope for success in a few tries.

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