2011 Expedition P0442

[Milkman]

Hi all. Unfortunately I don't have access to a smoke machine, so I am kind of hoping there is something common with these trucks that causes this. I know I can ride around with it forever, it just sucks having a 100k vehicle with this stupid light on.

I have already replaced the purge valve, and cleaned the capless gasket around the fuel inlet. Any other common things that can trigger this code on this make/model?

 

[GaryH2]

I have the same issue with my 2011 SHO. I've replaced the purge valve at the cannister under the car (not sure where it is on the Expy) and the line with the solenoid under the hood.
I suspect that it's the fuel flapper thing or the charcoal cannister itself since the light came back on this week. I think the early capless fillers don't hold up as evidenced by the change in design for newer models.

I know it's a different situation, but maybe it will help you track down the issue if I can get this resolved.



Sent from my moto z3 using Tapatalk

 

[07navi]

Hi all. Unfortunately I don't have access to a smoke machine, so I am kind of hoping there is something common with these trucks that causes this. I know I can ride around with it forever, it just sucks having a 100k vehicle with this stupid light on.

I have already replaced the purge valve, and cleaned the capless gasket around the fuel inlet. Any other common things that can trigger this code on this make/model?

Use a cigarette but don't inhale.......like Clinton

 

[Milkman]

I have the same issue with my 2011 SHO. I've replaced the purge valve at the cannister under the car (not sure where it is on the Expy) and the line with the solenoid under the hood.
I suspect that it's the fuel flapper thing or the charcoal cannister itself since the light came back on this week. I think the early capless fillers don't hold up as evidenced by the change in design for newer models.

I know it's a different situation, but maybe it will help you track down the issue if I can get this resolved.



Sent from my moto z3 using Tapatalk

Thanks. I hope you do. I feel like it may be the capless assembly too at this point, I just am not sure I want to get into replacing that. #1 I suspect it will be an expensive part and #2 I suspect it will be a bit complicated considering we are talking about a glorified filler hose.

 

[98nhexpy]

Did you replace the purge valve under the vehicle or this unit (#3) on the backside of the throttle body? This was the source of my issue last Spring.

 

[Milkman]

I am pretty sure it was that purge valve. It was right up against the firewall, basically right between the drivers and passenger side, and was a lot of fun to replace.