The defect
ON TROLLEYS AND TRANSIT COACHES EQUIPPED WITH CUMMINS ISB DIESEL ENGINES, THE FUEL LIFT PUMP COULD FAIL IN A MANNER WHICH RESULTS IN ENGINE FUEL STARVATION, WHICH COULD RESULT IN A STALL CONDITION. POTENTIAL LIFT PUMP FAILURE MODES INCLUDE: BRUSH WEAR OUT, BUSHING FAILURE, ROTOR TAB INSERT FAILURE, OR ANY OTHER FAILURE MODE THAT WOULD CAUSE THE FUEL PUMPING ELEMENT TO STOP SPINNING.
The risk
IF THE FUEL LIFT PUMP PUMPING ELEMENT STOPS SPINNING AND THE FUEL PUMPING VANES STOP IN A LOCATION WHICH BLOCKS FUEL FLOW THROUGH THE LIFT PUMP, THE ENGINE WILL BE STARVED OF FUEL. FUEL STARVATION COULD CAUSE LOW ENGINE POWER, ENGINE MISFIRE, OR ENGINE STALL. PRIOR TO THE ENGINE STALLING, THE OPERATOR COULD EXPERIENCE LOW ENGINE POWER, ENGINE MISFIRE, AND/OR DASH-MOUNTED FAULT LAMP ILLUMINATION.
The remedy
CUMMINS IS CONDUCTING THE OWNER NOTIFICATION AND REMEDY FOR THIS CAMPAIGN. OWNERS MAY CONTACT CUMMINS AT 1-800-343-7357 OR OPTIMA AT 316-779-7700.
NHTSA's own wording · initiated by ODI
Vehicles covered
| Model | Model years |
|---|---|
| Optima AH-28 | 1998, 1999, 2000, 2001, 2002, 2003 |
| Optima Opus 29 | 1998, 1999, 2000, 2001, 2002, 2003 |
| Optima Opus 34 | 1998, 1999, 2000, 2001, 2002, 2003 |
| Optima RT-52 | 1998, 1999, 2000, 2001, 2002, 2003 |
Components: FUEL SYSTEM, DIESEL
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Optima AH-28 | 1998 | 0 | 1 |
| Optima AH-28 | 1999 | 0 | 1 |
| Optima AH-28 | 2000 | 0 | 1 |
| Optima AH-28 | 2001 | 0 | 1 |
| Optima AH-28 | 2002 | 0 | 1 |
| Optima AH-28 | 2003 | 0 | 1 |
| Optima Opus 29 | 1998 | 0 | 1 |
| Optima Opus 29 | 1999 | 0 | 1 |
| Optima Opus 29 | 2000 | 0 | 1 |
| Optima Opus 29 | 2001 | 0 | 1 |
| Optima Opus 29 | 2002 | 0 | 3 |
| Optima Opus 29 | 2003 | 0 | 3 |
| Optima Opus 34 | 1998 | 0 | 1 |
| Optima Opus 34 | 1999 | 0 | 1 |
| Optima Opus 34 | 2000 | 0 | 1 |
| Optima Opus 34 | 2001 | 0 | 1 |
| Optima Opus 34 | 2002 | 0 | 3 |
| Optima Opus 34 | 2003 | 0 | 3 |
| Optima RT-52 | 1998 | 0 | 1 |
| Optima RT-52 | 1999 | 0 | 1 |
| Optima RT-52 | 2000 | 0 | 1 |
| Optima RT-52 | 2001 | 0 | 1 |
| Optima RT-52 | 2002 | 0 | 1 |
| Optima RT-52 | 2003 | 0 | 1 |
Other fuel system, diesel recalls in 2005
8 of the 562 recall campaigns reported to NHTSA in 2005 concerned the fuel system, diesel; OPTIMA BUS CORP filed 7 campaigns in all.
| 05V524000 17 Nov 2005 | MACK TRUCKS, INC |
| 05V205000 27 Apr 2005 | FREIGHTLINER LLC |
| 05V168000 20 Apr 2005 | ISUZU MANUFACTURING SERVICES OF AMERICA |
| 05V114000 29 Mar 2005 | ELDORADO NATIONAL - CALIFORNIA, INC. |
| 05V079000 2 Mar 2005 | ORION BUS INDUSTRIES LTD. |
| 05V063000 28 Feb 2005 | SPARTAN CHASSIS, INC. |
| 05V062000 22 Feb 2005 | BLUE BIRD BODY COMPANY |
NHTSA recalls (public domain) · all recalls of 2005