P0174 Diagnostic Trouble Code Discussion for July 2015
Fuel System Lean (Bank 2)
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| Help Request | Posted | |
| 1998 Chevrolet C3500 Silverado 5.7L Hesitation, Surge, MIL Lamp on P0174: Fuel Trim System Lean (Bank 2). I have received a 1998 c3500 pick up 5.7 vortec. Codes from vech were po171 po174 freeze frame was at around 30 mph light load. I tested fuel pressure at idle 55 psi, wot 61 psi, and koeo 60 psi. I have smoked the intake and found no leaks , i have also spraye... |
July 20, 2015 | |
| 1998 Chevrolet C3500 Silverado 5.7L Hesitation, Surge, MIL Lamp on P0174: Fuel Trim System Lean (Bank 2). I have received a 1998 c3500 pick up 5.7 vortec. Codes from vech were po171 po174 freeze frame was at around 30 mph light load. I tested fuel pressure at idle 55 psi, wot 61 psi, and koeo 60 psi. I have smoked the intake and found no leaks , i have also spraye... |
July 21, 2015 | |
| 2004 GMC Sierra 1500 SLE 5.3L Excessive Emissions, Poor Idle Quality VIN: 2GTEK19T44 P0174: Fuel Trim System Lean (Bank 2). Truck came in with no reverse. I drove it into the shop and had a tech replace the trans. Since then the truck will barely idle once in closed loop. Fuel trims go to +55 upstream O2's read 0 MV and down stream are at 950 MV. I tried a known good MAF and a MAP ... |
July 22, 2015 | |
| 2003 Jeep Liberty Sport 3.7L Hesitation, Misfire, MIL Lamp on VIN: 1J4GL48K63 P0174: Fuel System Lean (Bank 2). Ok here goes . This Jeep has misfires on the same bank as well as lean codes . The truck runs ok except a very slight hesitation on take off. The LT fuel trim is right at 32+ on both banks . If I clear the memory the fuel trim climbs right back up within a few... |
July 28, 2015 |
