P0172 Diagnostic Trouble Code Discussion for February 2013
Fuel System Rich (Bank 1)
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| Help Request | Posted | |
| 2002 Ford Explorer XLS 4.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 1FMZU72E92 P0172: System Rich Bank 1. Ok guys, thanks for the help on this one. Here is the story; this is my own car, I bought this car from a customer last year who could not afford to pay his bill, and was going to scrap it. The timing chain guides broke and crashed the valves. Since the genius... |
February 06, 2013 | |
| 2002 Ford Explorer XLS 4.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 1FMZU72E92 P0172: System Rich Bank 1. Ok guys, thanks for the help on this one. Here is the story; this is my own car, I bought this car from a customer last year who could not afford to pay his bill, and was going to scrap it. The timing chain guides broke and crashed the valves. Since the genius... |
February 15, 2013 | |
| 2003 Mazda Protege5 2.0L Excessive Emissions, Poor Idle Quality, Surge, MIL Lamp on VIN: JM1BJ24523 P0172: Adaptive Fuel Trim Too Rich (Bank 1). ... interesting problem. I get tons of lean codes, but hardly ever find rich codes in cars these days. This one has a p0172:system rich bank 1. Fuel trims are way negative: LT= -25%, short term fluctuates between -12% and -20%. Fuel pressure is about 50psi eng... |
February 21, 2013 | |
| 2003 Mazda Protege5 2.0L Excessive Emissions, Poor Idle Quality, Surge, MIL Lamp on VIN: JM1BJ24523 P0172: Adaptive Fuel Trim Too Rich (Bank 1). ... interesting problem. I get tons of lean codes, but hardly ever find rich codes in cars these days. This one has a p0172:system rich bank 1. Fuel trims are way negative: LT= -25%, short term fluctuates between -12% and -20%. Fuel pressure is about 50psi eng... |
February 22, 2013 | |
| 2001 Ford F-250 Super Duty Lariat 5.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTNX21L81 P0172: Bank 1 Rich. This 5.4 has a strange problem, It runs great but intermittently it will at idle began to lose cyl #1 through #4, Cylinder contribution will show 25-35% loss and will idle very poorly, Then will clear up and run great, idle in shop for 10 minutes and all the s... |
February 27, 2013 |
