so I recently had codes p0171 and 0174 pop up. I googled on how to diagnose but with the stats my burb is putting out I'm completely lost.

here is a pic of my stats. blue line=rpm green line=short term b1 and orange = short term b2.


any thoughts???

 

whats your fuel pressure at? lean codes could be from a weak pump

 

think it that is only thing that didn't save in the log. will go back and check. from looks it is running high long term while moving but either normal or close to normal when idail.

 

my 02 would run ok at idle and cruising but if you tried to pass someone it didnt have no power and was running lean. checked pressure and it was only 23 psi. changed the pump and it went to the 55 psi that it should of been

 

ok I wondering what the norm was for the maf and fuel pressure.

 

fuel pressure should be between 50-60. cant help with the MAF