I have a 2010 F150 King Ranch with 5.4 L engine. After the engine is completely warmed and driven for a while it will stall when in park and idling. This only occurs in cold weather never in summer. it just started doing it again today. Could the vapor canister purge valve be the cause?

 

Could be almost anything. Any OBD2 codes?

 

Regarding 2010 F 150 stalling after warmed up but only happening during cold winter months.
I purchased a new Vapor canister Purge Valve and the issue has not returned after a week and a half, Knock on wood.

 

After several discussions with people familiar with this issue I purchased a new Vapor Canister Purge Valve from Amazon, cost was $62.84 U.S.
Installed it over a week and a half ago and the issue seems to be resolved. I did not get any codes regarding this issue which was puzzling and took it to
a dealer to see if they could find a code for this issue and they couldn't. I spoke to a buddy of mine that retired out of WEP in Windsor ON who work in the dyno most of his career
and said he was pretty sure it was the purge valve as Ford has had many issues with them on the early trucks.

 

If the problem reoccurs, next step would be to clean the throttle body.

https://www.f150online.com/forums/vi...ttle-body.html