Vehicle recall 05V110000 · March 24, 2005

Optima AH-28, Opus 29 and 2 more models

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…

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary: 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.
Notes: Customers may also contact the national highway traffic safety administration's vehicle safety hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to http://www.safercar.gov.

Recall details

NHTSA campaign: 05V110000
Reported to NHTSA: March 24, 2005
Filed by: OPTIMA BUS CORP
Vehicles potentially affected: 417
Initiated by: NHTSA’s Office of Defects Investigation
Components: Fuel system, diesel

Recall 05V110000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Optima AH-28 (1998-2003): 2003, 2002, 2001, 2000, 1999, 1998
Optima Opus 29 (1998-2003): 2003, 2002, 2001, 2000, 1999, 1998
Optima Opus 34 (1998-2003): 2003, 2002, 2001, 2000, 1999, 1998
Optima RT-52 (1998-2003): 2003, 2002, 2001, 2000, 1999, 1998

Has your Optima been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

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