174 Lean Code?

[Chuckie B]

P0171 and P0174 can be multiple things but usually caused by fuel trims that are greater than 15%, so a lean condition for one reason or other. Double check all the vacuum lines, PCV, anything after the MAF basically.

Yah i've went thru them a little bit but i guess i'll have to look closer..:nono:

you got headers?

No headers....

 

[roush360r]

do you have a pcv breather recently installed instead of the factory hoses? ive seen alot of people use them incorrectly and have all kinds of problems.

 

[Chuckie B]

do you have a pcv breather recently installed instead of the factory hoses? ive seen alot of people use them incorrectly and have all kinds of problems.

pcv breather?...dont kno what that is but i havent changed ne thing on the car previous to this code showing up...had the KB installed last year and had no issues all last summer and for the 1st 5 or so times i had the car out this year...just showed up one random night.

 

[Chuckie B]

So i should check the fuel trims from a cold start but didnt have access to the equipment. either way i checked it with the car warm and its at 14 on bank1 and 21 on bank2...tried spraying and trying to look for a leak but it should be done when cold started?

 

[dsblk93gt]

That is definitely lean for sure. It could be an intake gasket but I'd hope not. It is really tough to use carb cleaner or anything and find a leak on newer cars. You pretty much need to have access to a smoke machine used for testing EVAP leaks and what not.

 

[Chuckie B]

:nono:...so where would i be taking it for this smoke test.

 

[Chuckie B]

or should i pretty much assume its the intake gasket?

 

[dsblk93gt]

I'm just guessing based off what I have seen with cars. If it seems to run fine I doubt it is MAF related. If I was closer I'd take a look.