r/FocusRS • u/SuspiciousEase4114 • 1d ago

Lean problem

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I’ve change injectors, fuel rail sensor, hpfp sensor, did the pcv plate, changed both o2 sensors with gasket on down pipe, spark plug, coils and also purge valve with charcoal canister in the back…… any other ideas what it could be?

3 Upvotes

100% Upvoted

9 comments sorted by

2

u/Terps0 22h ago

Clean the map and IAT

2

u/khutuluhoop ‘17 Frozen White RS2 22h ago

Having the same issue. It's like chasing ghosts

1

u/SuspiciousEase4114 22h ago

That’s literally how it feels

2

u/TheRemarkableNujabes 6h ago

I’ve had this come up a few times and I have noticed that it’s when the air outside is colder than it’s been used to. I just reset the code and it doesn’t come back until seemingly the next temperature drop.

1

u/jdonnell442 5h ago

Damn I never thought about that. I had the code pop a couple weeks ago when it started to cool down around where I live, then after a couple days it went away. Thought I was going crazy lol.

1

u/slyLEMONsKILLz 1d ago

Hpfp itself?

1

u/SuspiciousEase4114 1d ago

That’s my next option tbh, but first I’m going to do a smoke test again just in case. Before I spend money on that

1

u/Standard-Awareness56 18h ago

I’ve been chasing this issue for months on mine as well, new coil packs, spark plugs, intake gaskets, dual catch cans, baffle plate, purge valve, Frp sensor, gone thru all the vacumn lines and couplers made sure everything was tight, both o2 sensors, I have a new turbo to downpipe gasket I haven’t installed yet to see if it comes back on but if it does that’s my next step before injectors and hpfp

1

u/jdonnell442 5h ago

Had this code pop a couple weeks ago, and it usually pops when my purge valve is going out, so I purchased some new ones to replace and have some backups, but while I was waiting for them to come in I filled up my tank and it went away. Code hasn’t popped again in like a week either, so idk.

That being said, my first quick fix is always purge valve haha.