I've Owned my Raptor for 2 Months, It's been at the dealer for Most of it

[EricM]

Are they anywehre near each other? You can get some foil based wire wrap/insulation and shield it to make sure.

 

[n8sbroken18raptor]

I have yet to dive under the hood and check on it. Planning to take a look after work. It's comforting to know that this may be a possibility though.

 

[FordTechOne]

So update guys, I just got my NEW engine andddddd BAM. Low PRESSURE WARNING!!!!!

What is going on ???

I have a little theory that it going through my head and would like to see what y'all think.

Whenever I drive I like to flip my third aux switch and put on my LED foglights (as seen in my picture). When the dealership test drives my truck thoroughly, they do not do this and the issue never happens for them. As soon as I drive off the lot with this switch on, I get the issue in about 10-20 min. Could it be a faulty wiring situation??

Sounds like someone installed the lights/harness too close to the PCM or its harness. That can induce electromagnetic interference which skews sensor readings, especially those on VREF.

 

[letsgetthisdone]

Sounds like someone installed the lights/harness too close to the PCM or its harness. That can induce electromagnetic interference which skews sensor readings, especially those on VREF.

There is not that much current in an LED aux light kit to mess with VREF sensor. It could *maybe* effect a hall effect sensor, or unshielded can bus. But those are generally run in twisted pair to prevent interference.

 

[n8sbroken18raptor]

Yep so on the ride home I kept all of my auxiliary switches off and same thing happened.

 

[slimmytimmy]

Yep so on the ride home I kept all of my auxiliary switches off and same thing happened.

All I can offer you is good mojo for the future