Fox Electrical Sensor

[90Foxbody171]

1990 Foxbody with 5.0
Can someone please tell me where this sensor should go. I recently installed a cold air intake. This sensor was inside the stock air box.

 

[AeroCoupe]

That is the ACT or air charge temperature sensor. Usually mounts in the #5 intake runner on the lower intake. If the car it tuned then you can put it in the air box or in the CAI tubing.

Stock Location:

 

[90Foxbody171]

Thank you! I will thread it in the CAI tube.

 

[AeroCoupe]

That will work but realize the ECU is factory programmed for the expected temps in the #5 runner so unless you can tune the car it’s not going to be optimal in the CAI tube.

 

[90Foxbody171]

I also noticed a performance chip on the ECU port, I'll see if I still have the picture. Thanks for the info