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rotorwrench · 07-02-2023, 11:16 AM

Intermittent function is generally caused by an intermittent connection somewhere in the system. If tapping on the sender affects it then it's in there somewhere. It may not be getting a good ground. The ground path is fairly long on a fuel tank back to the frame. The power comes from the battery and passes through both the heating coil in the indicator unit and the heating coil in the sender so it's a pretty long circuit since it runs near the length of the car.

Our dear friend J Seery passed a while back so be aware that old threads are not always the best way to get the help you seek. Don't hesitate to start a new thread. Welcome into the Ford barn.

07-02-2023, 11:16 AM	#64
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,436	Re: How Ford Gauge Unit Work Intermittent function is generally caused by an intermittent connection somewhere in the system. If tapping on the sender affects it then it's in there somewhere. It may not be getting a good ground. The ground path is fairly long on a fuel tank back to the frame. The power comes from the battery and passes through both the heating coil in the indicator unit and the heating coil in the sender so it's a pretty long circuit since it runs near the length of the car. Our dear friend J Seery passed a while back so be aware that old threads are not always the best way to get the help you seek. Don't hesitate to start a new thread. Welcome into the Ford barn.