02 Passport

[dtinnin1]

Ive got an 02 passport 4x4 EX 3.2L 142k miles and its been running rough, stalling sometimes and the CEL is on. Went to get the codes run and got P0171, 0172, 0174, and 0175. My question is, could these be the 02 senors? Havent ever been changed. Hope i gave enough info

Thanks, Danny

[Dober89]

Sounds like the intake manifold gaskets are gone to me.

Take off the engine cover and spray some carb cleaner around the base of the intake manifold. If the engine idle surges then you have a leak. Also you can usually hear a loud hissing noise when the engine is running.

[amigo-2k]

agreed. I had the same issues 2 weeks ago.

[dtinnin1]

Me and my dad do hear a slight his when the car is idling, but thanks for the help i really appriciate it