P0171 Diagnostic Trouble Code Discussion for October 2015
Fuel System Lean (Bank 1)
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| Help Request | Posted | |
| 2004 Chevrolet Monte Carlo SS 3.8L Poor Idle Quality, Surge, Stall VIN: 2G1WZ12144 P0171: Fuel Trim System Lean. Vehicle came in code p0300 p0171. Has rough idle and stalls after hot soak. Checked for vacuum leaks had vacuum leak at intake port in hose going to map and fuel pressure regulator. repaired hose no change. Checked fuel pressure while running is 45 psi. replac... |
October 09, 2015 | |
| 2002 Chevrolet Silverado 2500 HD 6.0L Poor Idle Quality, Misfire, MIL Lamp on P0171: Fuel Trim System Lean (Bank 1). This has me frazzled at the moment. came in originally for running rough and check engine light fuel trims all were high. SO i smoked it and found leak at intake manifold gaskets. replaced gaskets and still leaks a little . replaced the manifold with updated p... |
October 10, 2015 | |
| 2005 Toyota Camry 2.4L Misfire VIN: 4T1BE32K65 P0171: Fuel System Too Lean (Bank 1). Car came in running poorly with a steady misfire on cylinder 4. Sometimes it would smooth out and run perfect and then all of a sudden start misfiring again. Its a dead miss and sometimes cylinder 3 will miss too but usually just cylinder 4. Compression on all... |
October 12, 2015 | |
| 2007 BMW 335xi 3.0L MIL Lamp on VIN: WBAVD535X7 P0171: Sytem lean bank 1. I'm having an interesting problem with this Bimmer. It had been in for rich condition problems a couple of weeks ago. At that time another shop had replaced 1 fuel injector and the high pressure fuel pump. We diagnosed it with leaking (and mismatched) injector... |
October 14, 2015 | |
| 2005 Toyota Corolla CE 1.8L MIL Lamp on VIN: 2T1BR32E35 P0171: Fuel System Too Lean (Bank 1). I have replaced intake manifold gasket af sensor and cleaned maf sensor still not fixed |
October 21, 2015 | |
| 1996 Ford F-150 Eddie Bauer 4.9L Poor Idle Quality, rough running VIN: 1FTEF15Y1T P0171: b1 lean. Ok, thanks in advance. Have this truck here customer states it runs bad intermittently. I have had it running or driving around the last 2 days and in that time it has acted up for a told of roughly 20 seconds. I don't completely trust the data because it has ... |
October 22, 2015 | |
| 1996 Ford F-150 Eddie Bauer 4.9L Poor Idle Quality, rough running VIN: 1FTEF15Y1T P0171: b1 lean. Ok, thanks in advance. Have this truck here customer states it runs bad intermittently. I have had it running or driving around the last 2 days and in that time it has acted up for a told of roughly 20 seconds. I don't completely trust the data because it has ... |
October 23, 2015 | |
| 1998 Toyota Corolla CE 1.8L Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 1NXBR18E5W P0171: Fuel System Too Lean (Bank 1). This Corolla is being naughty. OK, car comes in with misfire, lean codes and running rough. Replaced plugs and wires and fixed the misfires. Problem is the fuel trims are waayyyy out. It's adding about 39% ltft,19% stft. Searched all over and can't locate a va... |
October 30, 2015 |
