P0172 Diagnostic Trouble Code Discussion for April 2004
Fuel System Rich (Bank 1)
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| Help Request | Posted | |
| 2000 Ford Explorer Sport 4.0L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 1FMYU60X2Y P0172: Bank 1 System rich. Hello Fellow Techs. Any input on this would be appreciated. This Explorer runs rich always. O2's stay pegged at full rich at idle and cruise. I have checked for leaking fuel press. regulator, swapped MAF with new one, had ECM reprogramed to latest updates. T... |
April 02, 2004 | |
| 2001 Dodge Grand Caravan ES 3.3L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 2B8GP44G91 P0172: Fuel System Rich (Bank 1). Fouling # 1 & 5 plugs with fuel, black and fuzzy. Other 4 plugs look fine. Have checked injector pattern and looks normal and even on all cylinders. Fuel trim stays at -25% long term with O2 seldom switching. Once plugs are fouled will start to miss-fire. ... |
April 06, 2004 | |
| 1997 Ford Taurus LX 3.0L Poor Idle Quality, MIL Lamp on VIN: 1FALP53S2V P0172: system lean bank 2. FELLOW TECHS, THIS TAURUS RUNS PRETTY GOOD MOST OF THE TIME, SOMETIMES IT SHAKES A LITTLE ON START UP.MIL LIGHT KEEPS COMING ON AND THE CODES LISTED ARE SET. I'VE CHECKED FOR VACUUM LEAKS WITH A SMOKE MACHINE AND FOUND NONE, EGR VALVE WORKS PROPERLY,(STALLS EN... |
April 06, 2004 | |
| 1999 Saturn SL2 1.9L Hesitation, Misfire, MIL Lamp on VIN: 1G8ZJ5276X P0172: Fuel Trim System Rich (Bank 1). Vehicle had a code P0172 and a code P0404. Also the vehcile seems to misfire and/or surge at cruising speed. No missfire codes in the ECM. Idle seems to be a bit hi, around 950-1050 rpm, checked for vacuum leaks, but none found. I did see a posted fix of an i... |
April 12, 2004 | |
| 2000 Volvo V70 2.4L Running Rich VIN: YV1LZ5609Y P0172: System too Rich. ... This Volvo has us a little confused. We have already spent numerous hours on this car and have had no success in solving the problem. The vehicle has new air and fuel filters, and new spark plugs. It runs great, and has no driveability problems yet code P0... |
April 12, 2004 | |
| 1999 Saturn SL2 1.9L Hesitation, Misfire, MIL Lamp on VIN: 1G8ZJ5276X P0172: Fuel Trim System Rich (Bank 1). Vehicle had a code P0172 and a code P0404. Also the vehcile seems to misfire and/or surge at cruising speed. No missfire codes in the ECM. Idle seems to be a bit hi, around 950-1050 rpm, checked for vacuum leaks, but none found. I did see a posted fix of an i... |
April 13, 2004 | |
| 2000 Ford Crown Victoria 4.6L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 2FAFP71WXY P0172: system too rich bank 1. This is only one of several Crown Vics with high fuel pressure. Problem came on suddenly 2 weeks ago and now we are seeing no less than 3 Fords per day with MIL on and high fuel pressure. Fuel pressure regulator allows psi to exceed specs, turns on MIL. Tappin... |
April 14, 2004 | |
| 1996 Mercury Sable LS 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1MELM53S9T P0172: Rich bank 1. Have a Sable with rough idle and check engine light. Has misfire codes for cylinders 1,2 and 3. All on bank #1. Long term fuel trim on bank 1 is -18%, Long term fuel on bank 2 is 20%. Check for vacuum leaks at intake manifold, none detected. Unsure why bank 1 ... |
April 16, 2004 |
