James Hicks
New Member
2004 SE7 Disco 2
147xxx
Full rebuild
I have had intermittent 1174 and 1171 codes pop up. They usually pop up after I hit the highway. Never city driving.
I have replaced the MAF. Air filter. Air box.
I have done an intake smoke test. No leaks.
I did a sea foam treatment the other day and noticed a good leak from the header to the Y pipe.
I have a new gasket on the way along with new front O2 sensors.
My theory is that when the car is under a load, it sucks air into Y pipe causing the O2 to read high O levels making it seem lean, causing the P1174. Does this seem like a legitimate theory?
147xxx
Full rebuild
I have had intermittent 1174 and 1171 codes pop up. They usually pop up after I hit the highway. Never city driving.
I have replaced the MAF. Air filter. Air box.
I have done an intake smoke test. No leaks.
I did a sea foam treatment the other day and noticed a good leak from the header to the Y pipe.
I have a new gasket on the way along with new front O2 sensors.
My theory is that when the car is under a load, it sucks air into Y pipe causing the O2 to read high O levels making it seem lean, causing the P1174. Does this seem like a legitimate theory?