throwin a code

[Duckslayer08]

my truck started throwing a code this mornin when i got to work its sayin that Bank 1 is running lean...what could be a possiblity that is wrong with it

[flareside93]

too much 02 in your exhaust gas is i think what that translates to?

Diagnosis?
The MAF (Mass Air Flow) Sensor is dirty or faulty. or:
There could be a vacuum leak downstream of the MAF sensor.

[EmwhiteR/T]

Exhaust leak before the O2 or a faulty O2 could do it too.

[flareside93]

Exhaust leak before the O2 or a faulty O2 could do it too.

thats what i couldnt think of!!! lol.

[DirtyBoy]

i had the same shit pop up in my furd...

i replaced the O2 sensors and it went away

[Duckslayer08]

looks like im droppin the y pipe saturday

[lXlTravislXl]

it could be an intake leak, or a faulty o2 .. any loss of power while driving? also dont replace all 02 sensors that could be expensive.. if the o2's end up being your problem.. then buy one o2 sensor and replace it one a time.. drive around if the code pops back on then put the old one back in and put the new one in another spot.. gl!!

y drop it??

[GRAPHITEHEMI]

no misfires?

[abervintageman42]

looks like im droppin the y pipe saturday

gut the cats while your at it :wink5:

[DirtyBoy]

or just get rid of them all together... i know a place that will cut the second set out for 100 cash and the other 2 for 150 cash


deer park muffler... cant go wrong

[Duckslayer08]

im guttin the front 2 cats for FREE......gonna start workin on it friday evening and into saturday...im ridin with my buddy to work this week..ill post up some pics when is start guttin

[Duckslayer08]

btw the codes its throwin are
PO171 AND PO174..has anyone had these codes come up. what do i need to replace

[coobies5]

http://f150online.com/forums/v8-engines/239256-check-engine-codes-po171-po174-system-bank-what-do-they-mean.html

[05silver]

both banks are running lean, check for a restricted fuel filter or low fuel pressure,

[Duckslayer08]

yeah im gonna replace the fuel filter saturday..and hope it goes away

[DirtyBoy]

does it start real shitty? can you rev it okay when you start up?

mine did the same thing and i had to get the EGR system, MAF and throttle body cleaned

[Duckslayer08]

what did yall use to clean the maf...ill pull my throttle body saturday prolly clean it real good, whats involved in cleanin the egr system