Topic: New issues with the Jeep

[grumpygy]

Have to add that little sucker is very easy to break.

[chardrc]

check to make sure the connector has a good connection on that temp sensor. mine had a weak connection and would move around causing the gauge to bounce similar to yours. took a small screwdriver and bent out the metal tab in the plug to make a better connection and solved the issue.

[Jeffy]

Yeah, I'd check the connector first.  Those can break because of all the heat cycles.

[jfrabat]

You guys were right; temp sensor was just a bad connection.  I am glad I changed the ECU sensor as well, though, as now the mpg's are rising once more (seems the old sensor was keeping it in open loop longer or something!).  I will still change the gauge's sending unit just to be sure, but for now, only the oil pressure sending unit is pending!  YEAY!!!