LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Shifting and Stumble Problem HELP

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Old Mar 3, 2012 | 06:42 AM
  #1  
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Default Shifting and Stumble Problem HELP

So i just picked up a 93 z auto drove good when i was test driving. Went to drive it the other day start the car and the speedo just starts going crazy it started reading 60-70mph with the car at idle. i put the car in drive and the speedo reads correct when im driving. that problem 1

Problem 2- kinda hard to explain the car will run awesome quick and fast but the tranny doesnt like to shift.. and when the tranny shifts nice and easy and i give it full throttle the car boogs stumbles runs like ****.

IDK what these problems could be i was thinking VSS but thats not the case any ideas??
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Old Mar 3, 2012 | 07:06 AM
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just noticed that i control the speedo at idle with pushing the brake pedal in and out...

err anyone want to buy the car?? lol
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Old Mar 3, 2012 | 01:43 PM
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Sounds pretty strange. I'd start checking electrical connections and chassis grounds for securioty and corrosion.
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