Timmy2500

After reading thru 100+ temp gauge threads I still need an answer

Temp gauge sits a min untll I plug the sender on the block in then it pegs to max, unplug it it goes back to min is there a problem with the sender, gauge, or wireing?

Thanks, Tim

Jono4820

iTrader: (1)

Unplug the sending unit and see what the gauge does.....Then replace the sending unit. They are not that expensive from your favorite auto parts store.

BigBadLou

iTrader: (3)

If it pegs to max when you put the wire on the sender, the odds are very high that it's a shorted/bad sender unit.

If you want to troubleshoot it more before replacing it, you'll need a multimeter to measure the resistance of the sender. Let me know if you'd like to try that.

Hope this helps.
Lou

berlin305

iTrader: (2)

Mine does the same thing all i did to fix it. was put a new gauge in since the sensor is not cheap its 90 dollars compared to the 30 dollar mechanical water temp. But yes it could be a short or a bad sensor.