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NHTSA Campaign 05V110000

FUEL SYSTEM, DIESEL

Issued by OPTIMA BUS CORP · Reported Mar 24, 2005 · 417 vehicles affected

What's wrong

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.

Consequence

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.

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.

Vehicles affected by this recall

Make Model Year Units
OPTIMA AH-28 1998 417
OPTIMA AH-28 1999 417
OPTIMA AH-28 2000 417
OPTIMA AH-28 2001 417
OPTIMA AH-28 2002 417
OPTIMA AH-28 2003 417
OPTIMA OPUS 29 1998 417
OPTIMA OPUS 29 1999 417
OPTIMA OPUS 29 2000 417
OPTIMA OPUS 29 2001 417
OPTIMA OPUS 29 2002 417
OPTIMA OPUS 29 2003 417
OPTIMA OPUS 34 1998 417
OPTIMA OPUS 34 1999 417
OPTIMA OPUS 34 2000 417
OPTIMA OPUS 34 2001 417
OPTIMA OPUS 34 2002 417
OPTIMA OPUS 34 2003 417
OPTIMA RT-52 1998 417
OPTIMA RT-52 1999 417
OPTIMA RT-52 2000 417
OPTIMA RT-52 2001 417
OPTIMA RT-52 2002 417
OPTIMA RT-52 2003 417

Source: NHTSA Campaign 05V110000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.