I have searched and search can some one tell me why this temp comea on and off when I hit bumps or highway driving??? irs a 1002 fx4 with 5.4 in it

 

The same thing happens to me but its off most of the time. We give it a good wack and it will work again, for at least a little bit anyway, so i was wondering how to fix it or get a new one. I know that ford discontinued them, but thats all i know.

 

okay so any one how how to fix them then?

 

i saw a post once of how to fix them, you need to get the circuit board, then sotter, i spelled it wrong, a piece that sticks up, search it and you will find it. I took mine apart and nothing was broken.

 

sounds like a cracked solder connection on the circuit board.

 

okay ill search again but if anyone has that link that would be awesome!

 

You should be able to take it off and see where the solder is missing. remove the philips screw towards the windshield and pop it off from the clips that hold it on, and unplug the connector so you can take it out and look at it.

 

take the unit off the roof, open it up to the circuit board and there should be 5 black resistors on the right side of the board. make sure they are all soldered in place and dont move.

 

Here is a video how to do it;


Very inexpensive to fix, assuming it's just the resistors.

 

Thank you so much it work and actualy it was not the resistor it was a solder point like on the 97-03 odometer fix.