Ford Ecoboost 3.5 Purge Valve Issue: Should You Replace It?

(DTC) P0496, P0456, P0455, P04F0, and/or P0451 all may be signs your evaporative purge valve is leaking
signs your purge valve is leaking is struggle to start after fuel ups ,
EXTENDED CRANK AFTER REFUEL is struggle to start after fuel ups due to extra fuel vapor being brought in and unmetered causing no start
Check Engine Light Is On. The first sign of trouble for your canister purge valve is the check engine light. ...
Lower Gas Mileage. If your canister purge valve is not opening properly, it may adversely impact your gas mileage. ...
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[@mountain7777]

What about : 2013 Ford F-150 3.5 Ecoboost PO 450 code Evaporative emission system pressure sensor

[@mars9313]

I got code p0496 and p0451. I replaced the purge valve with oem but still code popped up again for p0496... do you knoe what else it is?

[@chrisy4669]

Hey Joe, have a 2014 eco boost with a P0451 code. Auto Zone guy said it’s the canister purge valve. Is this the same as what you just showed?

[@JoeTheAutoGuy]

Yes it is

[@ColFighter018]

Hey my man! Got the code P04F0 for a 2018 mustang ecoboost and took it to a Firestone shop. They ran a diagnostic test and said to replace the defective part is with part # Cm5233. When I got the sensor I thought it was the low Pressure fuel rail sensor but the pieces are different and noticed is was different part#. However, going back to the obd code P04F0 you mentioned the issue is the purge valve. Any insight would be great!

[@gabrielmendoza2203]

Would a bad purge valve cause random stall? Or no acceleration while idle gas pedal just goes down. I have replaced throttle body

[@Thegoat1998]

I got the same problem on my 2012 f150 ecoboost bro My truck starts & has no power & then stalls out It has the purge valve code but i changed the purge vavle the high pressure fuel pump & the throttle body & still having the issue

[@HickedUp]

​@@Thegoat1998 I've seen this issue and it's the low pressure/in tank fuel pump.

[@Thegoat1998]

@@HickedUp thanks for the help but i also figured out it keeps blowing fuse 76 when i turn on the truck would that also be the problem ? I will change the fuel pump in the fuel tank & see if that helps. Its been months & i cant figure it out alot of people are saying it could be a short in the wiring or a bad wiring somewhere

[@Thegoat1998]

@@HickedUp what do you think ?

[@HickedUp]

@@Thegoat1998 that, I'm not sure. Looking at the fuse diagram for the 3.5l it looks like the canister vent solenoid, of which I've actually had to replace. May be bad wiring for a wrecked solenoid.

[@mustafamirza129]

Do you know the part number for a 2014 eco boost?

[@JoeTheAutoGuy]

They differ by vin best thing to do is call your local ford dealer with your vin number and get the part number

[@dannyp8254]

Is it possible that it could also say check fuel inlet on the dashboard for this issue

[@JoeTheAutoGuy]

it is possible but usually that concern is with the evaporative emissions vent valve side near the fuel tank not the purge on the engine side

[@jpc256-hsval]

@@JoeTheAutoGuy

[@terezaquintero8412]

Got the PN for a 2017 F150 3.5 EB?

[@JoeTheAutoGuy]

They differ by vin best thing to do is call your local ford dealer with your vin number and get the part number

[@livefreevinnie]

What If the purge valve is stuck closed? There will be no vacuum on idle with the plug connected.

[@JoeTheAutoGuy]

Valid but usually you will get a no purge flow dtc if it’s stuck closed

[@twoserve2449]

What are the symptoms of this problem?

[@JoeTheAutoGuy]

Hard starting after fill up and idle issues and poor fuel mileage and sometimes down on overall power

[@twoserve2449]

@JoeTheAutoGuy The only thing I've noticed about my 3.5 17 Lariat is that, after a fill up it kinda acts up and the idle is not very good in the beginning of the fill up 🤔

[@cheizaguirre5494]

@@twoserve2449u find the issue?

[@snowrider5150]

Couldn’t you just leave the valve electrical connection on and then start it and get the same effect?

[@JoeTheAutoGuy]

No because the solenoid is supposed to pulse if it’s disconnected and still drawing in vacuum the valve has failed because it’s normal state is shut and closed should be drawing in no air

[@Belmara360]

do you have the part number by chance?

[@JoeTheAutoGuy]

What’s the exact year and model you have they have a few different designs

[@Belmara360]

2018 ecoboost mustang non pp

[@JoeTheAutoGuy]

ecoboost 2.3 ? just clarifying

[@Belmara360]

@@JoeTheAutoGuy yup thats it but no worries i figured it out what you meant by the part being different thanks for the reply anyways!

[@RacingRamFam]

Purge valve!!!!!