Code P0172 and P0174
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Code P0172 and P0174
I just replaced my wifes motor in her 2006 Explorer 4.6 3 valve due to low compression on one of the cylinders. Now I have reinstalled a junk yard motor and it runs like crap. Has an extreme loss of power and it clatters. I have no CEL on however I have codes P0172 and P0174 pending. Im sure if I drive it long enough they will be hard codes and trip the CEL. I have read that it could be a dirty MAF sensor. I took it out tonight and cleaned it. I do not hear any vacuum leaks. Has anyone had both codes and actually fixed it or can someone point me into the right direction? Thanks
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Junior User
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Well if anyone has these codes and is searching for this exact problem. I ended up buying a MAF meter and trying it. It still ran bad. So I returned it. I could not figure out why I had both of those codes pending but no check engine light. It seemed the engine was running fine. So I got to thinking that maybe a cat was plugged. I pulled the O2 sensor out of the lean bank side and let it dangle next to the exhaust. I then pulled the Explorer out on the street and it had its ***** back. So now I am searching for a cat or Y pipe.
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Joined: Nov 2013
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I all ready try ;remove spark plugs chek compression bank one hav 3 cylinder with 150 psi &1 only 110psi bank2 al cylinder 190 psi. clean ma fsensor replce pcv valve elbow hose coil inyectors I try first the mayor tune up
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