Installed my new isspro guages and the tranny temp dont work at all, it just sets on the peg at 100 deg. All connections are good, its getting power at the amp box and a good ground, the probe is mounted to one of the diagnostic plugs on the top back pass. side of the truck, What do you all think could be wrong, all the others work great.

 

Check your ground wire. Make sure you have a good contact point.

 

might be a bad gauge 2

 

Which Isspro gauges?

 

I would move the sensor to the 2nd gear acumilator. It is the port in the center of the tranny on the passenger side. It sits on the side of the bulge.

 

Its possible that 100 degree's is the minimum temp it will read. Have you actually driven it around long enough to get the tranny hot? Just a random possibility.....

 

Call Isspro (1-888-447-7776) and talk to Mike Pleska. He is one of the techs and he knows his stuff. Great to deal with.