I'm starting to think my gauge is not acurate. The lowest it ever is,,,after warming up, is about 160. Then at stop light's, it's around 190. If I sit at the light long enough it will go to 210. While towing, sitting it traffic it will peg the gauge a 280.

Surely I would have had a temp light come on by now. The light does come on for a second when I turn the key on, so I know it works. The sender is in the hot line. So, any way to test my gauge. Any other thought's. Thank's.

 

Get a cooking thermometer, pull your sensor out of the trans, put both in a hot cup of water and confirm its reading? Best idea I can come up with! Might work ok.

 

Mine will go to 160 and then when towing depending on the temp outside will go up to around 190. I have only had it hit the 210 mark once on a hot day going from light to light with 3 cars on the trailer. I have the mag-hytec pan on mine with the probe in the pan.

 

Get an infra red temp gun,& shoot the brass on the sender after you've driven for a while.It should read a little lower due to air cooling of the tube,but it should be close.Or pull the sender out,& put it in water,& boil it.It should tell you 212* at sea level.lower the higher up you are.