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Discussion Starter #1
I have a problem with my 97... First off it shifts a little too early. I looked on the scanner it will go to 0% throttle but about 3/4 pedal will bring 100%. at no pedal it is close to 0 and at 100% it goes to 3.78 and will go clear up to 4.15 full throttle. Am I having issues or did I forget a step when installing my new ecm? It was matching PN.
 

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I don't own a 97 nor have I dealt with the problem. Given that caveat couldn't the false readings be due to a bad TPS?
 

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When does it shift too early ? Is it 1st through 3rd or early in to overdrive ? You need to make sure that you throttle valve cable is on at both ends.
 

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Discussion Starter #4
at just barely 100% it shifts in all gears about 1500 rpm
 
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