Hi all, after filling up my 2022 Ford Edge powered by a 2.0 Ecoboost with 34,000 miles on the odometer the car was idling extremely rough, it felt like it wanted to stall. As soon as I accelerated it felt fine. No check engine light is on. I was thinking low pressure fuel pump. However, I don't think that's it because the symptoms only occur at idle. What could it be?
emissions equipment is warrantied for a very long time (see your warranty manual). Take it back to the dealership
Your purge valve may be starting to act up already. My wife has a 2017 2.3L EcoBoost engine in her Mustang. Ford made the EVAP systems for those EcoBoost engines way too cheaply. A year or so ago, every time she filled up, the engine would either not start or run really bad for a few minutes. Your purge valve is supposed to take gasoline vapors out of the gas tank take them to the engine, along with liquid gasoline so they can be burned. The valve can apparently get stuck open, and it can flood the engine.
They don't make Fords like they used to. My 1999 Ranger has over 290k miles on the odometer and I've never seen that check engine light come on. It still works, too.
I'm wondering if there is a secondary problem, in addition to the purge valve, that I need to tell my mechanic about.
Time to look at live data to see what the problem is. As soon as the purge valve acts up, it doesn't trip the P1450 code, at least on my '17 Mustang. It requires persistent negative values on the fuel tank pressure sensor to trip the code. The purge valve opens and shuts repetitively to maintain pressure that's about even with atmospheric pressure. Persistent negative values will eventually trip it. I've seen it happen with my Mustang.
You should be able access purge valve data with a cheaper scan tool. My Innova 3100RS can read purge valve data. It cost $100.
You can test if the purge valve is stuck open using a scan tool. Check the pressure inside the gas tank with the scan tool. If the purge valve is stuck open you will see a negative pressure vacuum inside the gas tank.
https://youtu.be/PjuJNR9cyzg&t=100
when you fill up, do you stop when the nozzle clicks off, or do you keep filling to the brim?
@imperator I stop when the nozzle clicks off
Your purge valve may be starting to act up
How can I test to see if the purge valve is, in fact, bad?
So I went to the dealership today (Thanks @Justin Shepherd) and the dealer says that there was no trouble codes and did not find a problem while test driving, despite the car idling poorly after a fuel fill up five minutes prior to visiting the dealership. Not sure where to go from here?
So here is an update for everyone, the problem went away by itself for a while, as long as I never filled my gas tank beyond 7/8 full, making me suggest it was just a "kink" with the car. About a few weeks ago, the symptoms reappeared. The only way to keep my car from sounding like it wants to stall is to rev up the engine to 3k rpms for a few seconds immediately on startup and that does the trick. I'm wondering if there is a secondary problem, in addition to the purge valve, that I need to tell my mechanic about.
@fishingandcarsenthusiast123 I really think you're at the point where you need to look live data to see what's going on. There is a wealth of information in the data stream about what's going on in your engine. (Even most cheap scan tools can read data these days.)
I'm wondering if there is a secondary problem, in addition to the purge valve, that I need to tell my mechanic about.
Time to look at live data to see what the problem is. As soon as the purge valve acts up, it doesn't trip the P1450 code, at least on my '17 Mustang. It requires persistent negative values on the fuel tank pressure sensor to trip the code. The purge valve opens and shuts repetitively to maintain pressure that's about even with atmospheric pressure. Persistent negative values will eventually trip it. I've seen it happen with my Mustang.
You should be able access purge valve data with a cheaper scan tool. My Innova 3100RS can read purge valve data. It cost $100.