Have a 94 with the 3.4 v6, auto trans. i just got for my kid. The high school rebuilt the motor & put it back in. For some reason, the speedometer doesnt work. Its plugged in on the tranny & we bought a new speedo sensor for $30 & that didnt solve it. Worse yet, the tranny is a 4sp automatic. In the "D" mode, the car goes up to any RPM & if I back of the gas & give gas, it sometimes shifts to 2nd. Thought it was a vacuum problem but the trans shop is clueless too as no vacuum is on it. They said its a "speedo" driven tranny?? The odometer & speedometer doesnt work at all, could it be as simple as getting a new gauge cluster with a speedo & then the tranny will shift? The only way I can get it from shop to shop is pressing a "start in 2nd" button on the console & that will get 2 gears going but topping at almost 50mph and not getting into final overdrive.. Any idea appreciated.

 

The transmission is in "fail safe" mode. You will have 2nd & 3rd only when this happens. The speedometer "must" be fixed to solve this.

 

Welcome to TGO, apacect. Our site is dedicated to 82-92 Camaros and Firebirds. You might be well advised to try a site like the following:

http://camaroz28.com/forums/

Best wishes on you project.

JamesC

 

Thanks, didnt realize I was getting that old since I had a 2nd gen lol

 

OK great, thanks for your help!