2003 Ford Explorer Sport Trac "bank" Questions

What is code 171 and 174 on a 01 Ford Sport Trac 171 is system too lean (bank 1) 174 is system too lean (bank 2) you might have a vacuum leak or bad injector o rings

...though everything looked normal on the gages. I took in to get an oil change, and they said it was bank 1 lean 02 and bank 2 sensors. What does this mean and about how much will it cost to fix, and ...

2003 ford explorer sport 4.0 and the chk engine light is on and the code reads lean on the left bank.. what can this be ? A vacuum leak maybe ? please help.. maybe a clogged fuel injector on that side

...set, smoke testested upper end of engine seems tight ??? this multipal missing on 1,2,3 cylinders bank 1 only at idle... goes away as soon as you raise throttle, removed egr valve and tested for ...

banks 1and2 lean have already replaced mass air flow You probably have a vacuum leak somewhere along the PCV hose. The rubber elbows on these hose lines rotted from the oil vapor and split. Carefully ...

...vacuum or PCV line/connection Faulty or stuck open PCV valve Failed or faulty oxygen sensor (bank 1, sensor 1) Sticking/plugged or failed fuel injector Low fuel pressure (possible

and causing to much back pressure and causing it not to stay running. Thank you Don it might be the bank 1 lambda sensor,it could be telling the air flow meter to over fuel, put a fault code reader on

My check engine light is on again and keeps sayin bank 1 and bank 2. The autozone said to replace both O2 sensors. So I did. Check engine light came back and now in the mornings when I start it, it ...

...o2 sensor located on a 2003 ford explorer sport trac Hi there:There are 2 up stream HO2S sensors, Bank 1, passenger side and Bank 2 drivers side.You can find eaither on in the exhaust pipe about 6 ...

...it work for a day or two but came on. then had it check and its saying that something about bank 1 bank 2 that fuel pump doesnt have pressure or it could be fuel pressure regulater or fuel ...