ATX MKIV #9644 Coyote Build Thread (Index #137) - Trickle Charger Port Added

[cv2065]

I went through the same thing. Speedhut gave me some steps to check it by process of elimination. They will ask you if you have to call them for a replacement.

1. Connect only the power to the back of the gauge, disconnecting the sensor harness. Does it full sweep then to zero.
2. Connect power and the harness to the back of the gauge, then disconnect the plug at the sensor. Does gauge full sweep then to zero.
3. Reconnect the plug into the sensor. Does the gauge full sweep then read correctly?

This should give you an idea if you have a gauge or harness issue. You could also move the harness cord around a bit while testing to see if it makes any difference as if it’s intermittent, then that may be harder to diagnose.