4.2L O2's need changed???
Meaner than Ymeski
Joined: Oct 2009
Posts: 23,811
Likes: 828
Damn brad
... i get to bust your ***** again 
TPMS= Tire pressure monitering system....
TPS= Throttle position sensor
But.. It still sounds like you got a vacumme leak somewhere... Or IAC(Idle Air Control ) Valve... You can clean the IAC valve with some carb cleaner
... i get to bust your ***** again TPMS= Tire pressure monitering system....
TPS= Throttle position sensor
But.. It still sounds like you got a vacumme leak somewhere... Or IAC(Idle Air Control ) Valve... You can clean the IAC valve with some carb cleaner
Junior Member
Joined: Mar 2011
Posts: 1
Likes: 0
From: Lexington,Ky.
I had same problem with my truck throwing 171 and 174 code try the vacum hose under intake manifold the one that goes to pcv valve ford dealer had the part for 31 dollars common problem for that motor hose will have burn holes in it.Fixed my problem 3 weeks no more codes
Moderator (Ret.)
Joined: Sep 2008
Posts: 9,460
Likes: 486
From: Lake Mary Florida
I had same problem with my truck throwing 171 and 174 code try the vacum hose under intake manifold the one that goes to pcv valve ford dealer had the part for 31 dollars common problem for that motor hose will have burn holes in it.Fixed my problem 3 weeks no more codes