Autometer Tranny Temp Gauge reading 250!!!

[budracer1]

Hey guys over the weekend i finally got around to installing all my new autometer z series gauges.Boost and pyrometer seem to be working pretty good reading about 500 to 600 on egt at a cruise and around 3psi boost up to about 25 if i stomp it but transmission kept climbing till it got to 250.Now i know that my transmission isnt that hot or else i would have been walking but is the gauge bad or do i need to do something different.I used the test port for my probe/sensor and did not use a ground as i figured the metal to metal would be ground enough,but maybe i need to run a ground wire?Ive got a evo tuner and with it hooked up it has the tft at 135 to 140 which is probably pretty close i would think,since i was not towing anything and wasnt dogging the truck.Any advice?

Thanks in advance Jason

[ipz2222]

It seems someone else had that problem and they added the ground to it and it started working right. I would think screwing into the case would be enough, but some guages won't work that way.

[2006PSDSD]

I've got the auto meter phanton gauges. I didn't have that problem, but I did run a separate wire for a ground, from the gauge down to a good ground under the dash. Hope that helps

[budracer1]

i daisy chained all the grounds for the lights to a good ground right under the hood where all the wires come through the firewall.If i use one those little blue connectors(lol) and just clip into that ground wouldnt that be good enough?wouldnt be any worse anyway.

Thanks Jason

[2006PSDSD]

I did the same thing. Maybe you have a bad gauge??? I put my gauges in over a year ago. How many wires are there for the tranny one? One power and ground for the light, and one for the sensor?

[budracer1]

yes 1 power and ground for light and 1 power for sensor but now i have not grounded it with a wire yet, i was just asking if i just clipped a ground wire into the ground wire of my light would that be ok.

[2006PSDSD]

Are you talking about splicing another ground into an existing ground? You can do that no problem. If there isn't a ground, then you don't need to ground it. Just hook the 2 power wires up, and the one ground, and then the sensor (no particular order)

[budracer1]

well there is a ground post on the gauge right besdie where the hot sensor wire goes,i will try grounding the sensor and ill get back to you guys thanks!!

Jason

[budracer1]

Ok i went out last night and pulled the gauge out and there was a black - and white+ for the lights and then three post for sensor,ignition hot and ground.So i added a ground to the ground post,tied it in to the ground for the lights and it seems to be working now.I took about a 5 mile trip out the road while ago stopping a couple of times and sitting still for a few min,and it never got over 115,which is about what my evo was reading so maybe mission accomplished,since yesterday in less than 5 miles it was up to bout 180.Thanks guys!!!!

[2006PSDSD]

Glad we were able to help