Duster temp gauge problems

67Dart273 said
Start by checking the sensor resistance. Here are the standard test resistors for checking gauges: IE the sensor should kinda match these at cold and operating.

You can tell if the sender is grounding by checking between the brass shell and the intake. Do NOT overtighten these. You can ruin them by doing so.

It is possible that even though the gauge pegs when grounded, it has a problem over the operating range, like, bent needle dragging on the gauge face, etc

View attachment 1716264102

Yes that’s how I checked I had good ground and I know the sensor resistance is good as well. There is no way I could have three bad sensors including an OEM that were all new out of the box. No sure on the bent needle I guess. I wonder if there is a way I can mimic those resistances going back to the gauge to see if it moves at all