2017 PCV hose sensor

[dsphil]

Anyone know what sensor is this at the PCV hose? I don't see it in earlier models. It might be crank case pressure sensor but not sure. Couldn't find it in part list. When I took it out, there are oil presents.
Edit: It is a pressure sensor part #fr3a-9g824-ba

 

[M-Sport fan]

IF that is what you speculate it is, I wonder if the CFM/UPR oil filler cap replacement breathers will cause it to set a DTC code/cluster light.

Anyone have a '17 with the breathers installed?

Could it be a crankcase pressure relief solenoid to recirculate/vent excess pressure back into the intake?

 

[MitchsFiesta]

its a pressure sensor but its really limited on range. Based on the calibration data 0v= -2.5 psi and 5v = <1psi and you get a check engine light if it gets close to either extreme.

Ive run the crankcase breather on the mustang (all Ecoboost mustangs have it and all post 2015 Focus ST/RS have it) and not set it. After all, unless you have excess crankcase pressure, the breather is basically an oil cap. I think the main reason for it is it will tell you if your PCV valve is bad so you get a check engine light before you boost your crankcase.

 

[MoxBoost]

The part would not cause a light the hose that clips on in back will throw a light if it has a damaged o-ring.

I run my 16 with the breather and have yet to have an issue. What’s your code your getting?

This is the hose that has that part for the 2016-17 models C1BZ-6A664-B

Sent from my iPhone using Tapatalk

 

[M-Sport fan]

After all, unless you have excess crankcase pressure, the breather is basically an oil cap.

OF COURSE, the whole reason I ordered one was because of the ONE WAY check valve, but I DO want to know how much pressure it takes to cause these breathers to vent crankcase pressure to atmosphere, or are they totally OPEN, with ZERO pressure needed to open, in that direction?
(@CFM refuses to answer their phones, or answer voice mail/emails.)

 

[dsphil]

its a pressure sensor but its really limited on range. Based on the calibration data 0v= -2.5 psi and 5v = <1psi and you get a check engine light if it gets close to either extreme.

Ive run the crankcase breather on the mustang (all Ecoboost mustangs have it and all post 2015 Focus ST/RS have it) and not set it. After all, unless you have excess crankcase pressure, the breather is basically an oil cap. I think the main reason for it is it will tell you if your PCV valve is bad so you get a check engine light before you boost your crankcase.

The part would not cause a light the hose that clips on in back will throw a light if it has a damaged o-ring.

I run my 16 with the breather and have yet to have an issue. What’s your code your getting?

This is the hose that has that part for the 2016-17 models C1BZ-6A664-B

Sent from my iPhone using Tapatalk

OF COURSE, the whole reason I ordered one was because of the ONE WAY check valve, but I DO want to know how much pressure it takes to cause these breathers to vent crankcase pressure to atmosphere, or are they totally OPEN, with ZERO pressure needed to open, in that direction?
(@CFM refuses to answer their phones, or answer voice mail/emails.)

I think the breather does nothing if you have both PCV still intack. If the primary PCV check valve is bad, boost pressure will be lost thru the secondary PCV. The crank case will never see positive pressure because the intake will always sucking air from it. The only way to make it functional is block off both PCV and it will act as VTA.

I didn't get any codes. I disconnected the hose so I can spray intake valve cleaner thru there.

Also AP has a monitor to read from the crank case pressure. I drove it and never got more than .01 psi.

 

[M-Sport fan]

Maybe I should send back the CFM?

ANY chance it could at least vent some of the cold ambients/winter short trip moisture buildup out of the system at all?

 

[dsphil]

Maybe I should send back the CFM?

ANY chance it could at least vent some of the cold ambients/winter short trip moisture buildup out of the system at all?

I am afraid it will not stand a chance either it is ball or diaphragm valve design. The secondary PCV does not seem to have any check valve so it is open to atmosphere thru the intake.