02 temp gauge doing it's own thing.

Here in NE o-hi-o it is cold: 20's.
The other day, on way back from errand, I noticed the temp gauge did not come off peg in usual time frame. Warm air was coming out vents well enuf, then suddenly the gauge jumped to where it should of been. Then about every other time I drive it, the gauge just does it's own thing. I popped the hood and wiggled the plug connections to what I suspect to be the temp sending unit, but that didn't seem to help.
Regardless, I ain't monkey'in with it till summer.
I just wondered if anyone else has had this issue?
Thanks.

 

There are 2 sensors on the 3.4.
See link below for where and what

https://www.tacomaworld.com/threads...nt-temp-sensor-location.419900/#post-11959746

 

Thank you.

I have the 2.4 motor and 5spd.
I do think I've located the 2 sensors on it. One on left side and 1 one right, both are right at large hose connections, toward the front.