Another Temp Gauge ? Sorry - Third Generation F-Body Message Boards

Timmy2500 · 04-08-2009, 04:22 PM

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 · 04-08-2009, 06:12 PM

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 · 04-08-2009, 07:18 PM

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 · 04-09-2009, 05:49 PM

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.