I have a 2005 F150 5.4 and I recently got a p0175 code. I've replaced the M.A.F. sensor, fuel injectors, fuel filter, new plugs, coils and checked the vac lines but I'm still getting a p0175 code. Ive reset my P.C.M. and the code stopped for 2 weeks but returned later. The truck runs fine when I erase the code but when it returns it hesitates on take off and has a slight shake like a misfire and it makea a bubbly popping sound from the exhaust. Im at a loss of what to do next! Could this be a code stuck in the P.C.M.? My mechanic thinks it mya be the cam phasers! Pls someone help!

 

Sounds like you might have fried the cats. Magnaflo sells some replacements cheap.

That's my .02

 

Thanks I'll take a look at that!

 

So I went and got a code test ran and now it says I have p0172 and p0175 code. Any ideas?

 

Did you check out your cats are they OK?

Also check your O2 sensors I didn't see where you mentioned anything about them.

 

I replaced 1 o2 sensor but none of the others. I havent had the cats check yet.