i checked my dtc and it threw me this. p0174 system too lean bank 2? whats up with that exactly?

 

Here is what I found:
http://www.obd-codes.com/p0174
http://www.aa1car.com/library/ford_lean_codes.htm

Kevin

 

im getting a lean condition on bank 1 Now also? what should i do after cleaning the maf?

 

Maybe nothing. Cleaning the MAF may fix both!

- Jack

 

check for a vacuum leak on the PCV elbow on the back of the intake manifold

I see you have a 1999, but what engine?

 

its the 5.4 engine. i need to clean my maf too though id say, need to do it and throttle body soon.. will the lean code hurt the engine? i know running too lean will but how lean does it have to b to throw a code?

 

+100, pcv elbow is most common, running lean raises cyl temps and egts and can cause detonation, not good for your engine.

 

hey patman where is that elbow located and whats a good fix for it? anyone have a picture of the elbow and what causes the leak ie. what parts need to be replaced and so on? i cleaned my maf and am getting raised engine temps still, someone please help me out..

 

hmmm still having trouble getting this elbow thing.. hey i hate to be post hogging but i dont have internet access thru the week and tryin to get this thing fixed. my check engine light usually comes on but i cleared it with my edge and it hasnt come back on and edge keeps saying no trouble codes, itll come back on though always does.. ive cleaned the maf and id love to get this lean condition fixed dont wanna detonate, ive noticed instead of running at like 202 degrees my trucks been seeing 208 - 212 is this normal? didnt see higer temps till cel has been coming on trucks all stock with airaid cai and edge on 87 canned tune.

 

there is a hose comming out of the passenger side valve cover, follow that hose to the back of the intake and you will find the elbow.

 

see it coming out of the valve cover is the elbow hook into the upper intake behind the throttle body? i dont hear a vac leak, if the maf has been cleaned and the elbow isnt leaking is there any other thing could be fault for the leaning condition?

 

this is where a scan tool is very handy, to know why you are running lean it also helps to know WHEN it is running lean(freeze frame data is key here). also just because you have cleaned the maf does not mean it is no longer a suspect, cleaning doesnt always work. have you checked fuel pressure? Im sorry to say but you may have done all you can without the proper equipment and a trip to the dealer may be in your future.