Temp needle bounces? help?

[sileighty83]

Hello, recently my temp needle on the cluster bounces. like it's not even working and it just jumps as I drive. It's off and on, and I was told it was my temp sensor could be bad, but I tried cleaning it and all and it seemed to work but its back again not sure what the exact problem is.

thanks all!

[whatda]

mine did the same thing but it just went away

[SoguRacing]

there's probably a loose connection somewhere or possibly a short giving false readings.

[Bigsyke]

With solid engine mounts it can do that.

[sileighty83]

hhmmm It does feel loose. Is it ok to get another sensor harness and just splice the new one in. Or would it cause the connection to be weak?

[KiLLeR2001]

Either the sensor connection is loose (aka every time you hit a bump its effected) or you have air bubbles in your system causing the needle to fluctuate.