Just bought a 1986 f150 efi Lariat xlt. The temp gague does not work. I am trying to find the sending unit to replace but so far have not been sucessful does anyone know where the sending unit is located in a 302 efi. and does it have more than one sender for the computer. Thanks for any help.

 

Follow the upper radiator hose. It is just above the thermostat and the small bypass hose.
BUT
First verify that the fuel and oil pressure gauges are working properly. All 3 gauges are powered by the Instrument Voltage Regulator. If all 3 are not working then look at the IVR first.

 

Actually, I think that's the location of the temp sensor for the computer. I believe the temp SENDER for the gauge is on the driver's side of the intake between the 1st and 2nd bolts

 

Thanks I will check it in the morning. Fuel and oil seem to be working ok.
Thanks

 

Yes, there's a sensor for the computer and a sender for the gauge. Sensor is usually near the thermostat like Chris said. I have only done the sender on a straight 6 though so I'm not help.

 

replaced both senders and gague works fine now. Thanks for the help

 

located just to the right of the distributor cap, top of engine, usually hiding below the wiring harness running towards the firewall.

To test gauge, pull wire off sender and ground it (using alligator clip etc.) turn ignition to on and gauge should go full scale, if the gauge is good. No movement, check wiring, sender may not necessarily be good.

 

Between the 1st and 2nd intake bolts, driver's side.

 

My '89 did the same thing. Replaced it, all is good.