THOMAS BUS 1988: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

General Information

NHTSA Campaign ID Number: 91V169000

Make Model Year
THOMAS BUS 1988
Date Owners Notified Date Received by ODI Date Added to Database
1991-09-26 1991-10-01 1991-10-04

Production Dates: 1988-11-01 - 1991-08-01

Manufacturers Involved: THOMAS BUILT BUSES, INC.

Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Potential Number Of Units Affected: 407

Report Initiator: MFR MFR Report

Summary

THE FUEL SHUT-OFF SOLENOID IN THE CUMMINS 6C ENGINE MAY BE FAULTY, CAUSING SPONTANEOUS INTERRUPTION OF FUEL FLOW TO THE ENGINE DURING NORMAL OPERATION. THIS RESULTS IN LOSS OF POWER TO DRIVING WHEELS, POWER STEERING, AND OTHER POWER ASSISTED OPERATING SYSTEMS.

Consequence

LOSS OF ENGINE POWER AND SECONDARY LOSS OF POWER ASSISTEDSYSTEMS REDUCES STEERING CONTROL, BRAKING ABILITY, VISUAL SYSTEMS AND OTHERPOWER ASSISTED OPERATING SYSTEMS, RESULTING IN INCREASED RISK OF VEHICLEACCIDENT.

Remedy

WHERE NECESSARY, REPLACE THE SOLENOID SPRING, ADJUST SOLENOID, REPLACE WIRES, AND VERIFY MAXIMUM POWER REQUIREMENTS TO THE SOLENOID.

Notes

SYSTEM: FUEL PUMP.VEHICLE DESCRIPTION: BUSES AND SCHOOL BUSES WITH CUMMINS 6C ENGINES.