1991 MACK RW
2 recalls, 0 complaints - 27 TSBs
94V136000 Jul 19, 1994
VEHICLE SPEED CONTROL
Defect Description
THE HAND THROTTLE CABLE PASSES THROUGH THE ACCELERATOR ROD ASSEMBLY AT AN ANGLE THAT WEARS A GROOVE IN THE ROD, WHICH IS LOCATED UNDER THE ACCELERATOR PEDAL. THE CABLE CAN BECOME WEDGED IN THE GROOVE WORN INTO THE ROD AND CAUSE THE ACCELERATOR TO STICK IN AN OPEN POSITION.
Consequence
THIS CAN RESULT IN LOSS OF CONTROL OF THE BUS, AND COULD RESULT IN AN ACCIDENT.
Remedy
DEALERS WILL INSTALL A POSITIONING BRACKET FOR ROUTING THE HAND THROTTLE CABLE THROUGH THE ACCELERATOR ROD ASSEMBLY.
94V032000 Feb 15, 1994
VEHICLE SPEED CONTROL
Defect Description
FUEL INJECTION SYSTEM RECONFIGURATION TO COMPLY WITH ENGINE EMISSION STANDARDS CAUSE HIGHER ENGINE VIBRATION LEVELS WHICH LEAD TO EARLY WEAR AND COMPLETE FAILURE OF THE SECONDARY THROTTLE RETURN MECHANISM.
Consequence
IN THE EVENT THE PRIMARY THROTTLE RETURN FAILS, FAILURE OF THE SECONDARY THROTTLE RETURN SYSTEM WOULD NOT PROVIDE PROTECTION AGAINST LOSS OF THROTTLE CONTROL.
Remedy
A NEW PRODUCTION SECONDARY THROTTLE RETURN SYSTEM CONFIGURATION WILL BE INSTALLED.
No complaints found for this vehicle.
Technical Service Bulletins, 1991 MACK RW
27 manufacturer communications from 22 unique bulletins. TSBs describe known problems and recommended fixes from the manufacturer.
Most Affected Components
| Component | Bulletins |
|---|---|
| 060000 ENGINE AND ENGINE COOLING | 12 |
| 110000 ELECTRICAL SYSTEM | 4 |
| 100000 POWER TRAIN | 4 |
| 180000 VEHICLE SPEED CONTROL | 2 |
| 980000 UNKNOWN OR OTHER | 2 |
| 251000 ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC) | 1 |
| 020000 SUSPENSION | 1 |
| 350000 EQUIPMENT | 1 |
KC-750
Jun 28, 2022
060000 ENGINE AND ENGINE COOLING
US10 Emission Engines - Diagnostic Trouble Code ( DTC ) SPN 1231 FMI 9 Troubleshooting.
KC-745
Jun 22, 2022
100000 POWER TRAIN
Automated Manual Transmission ( AMT ) I-Shift / mDRIVE - Ribbon Harness Replacement - Speed Sensor Bolts, Possible Fault Codes P1058 - 21 Or MID 130 PID 161 FMI 1
KC-2112
Jun 21, 2022
110000 ELECTRICAL SYSTEM
Programming Failure - Chassis With Cummins Engine And An Allison Transmission
KC-2112
Jun 21, 2022
100000 POWER TRAIN
Programming Failure - Chassis With Cummins Engine And An Allison Transmission
KC-2112
Jun 21, 2022
060000 ENGINE AND ENGINE COOLING
Programming Failure - Chassis With Cummins Engine And An Allison Transmission
KC-2143
Jun 21, 2022
180000 VEHICLE SPEED CONTROL
(Back Office) - Cruise Control Inoperative After Updating Software VECU5 Without ESP Package (UESP).
KC-2116
May 26, 2022
060000 ENGINE AND ENGINE COOLING
NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-2131
May 26, 2022
060000 ENGINE AND ENGINE COOLING
USE FOR NEW VEHICLES (US21+OBD22 Emissions) - Intermittent Diagnostic Trouble Codes U02A3, U029D, U029E
KC-2158
May 26, 2022
060000 ENGINE AND ENGINE COOLING
Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-2171
May 26, 2022
060000 ENGINE AND ENGINE COOLING
Temperature Sensor Troubleshooting Guide - US10+OBD13 And Newer
KC-2165
May 26, 2022
060000 ENGINE AND ENGINE COOLING
DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions
KC-714
May 25, 2022
060000 ENGINE AND ENGINE COOLING
Mack Chassis - Diagnostic Trouble Codes ( DTC's ) - P020113, P020213, P020313, P020413, P020513, P020613, Cylinders 1 Through 6 Injector A Open Circuit
KC-699
May 24, 2022
110000 ELECTRICAL SYSTEM
Mack Chassis - Bendix Vendor Configuration Program ( VCP ) Software Download Information
KC-698
May 24, 2022
060000 ENGINE AND ENGINE COOLING
Mack Chassis - Diesel Exhaust Fluid ( DEF ) System Cleaning/Flush After DEF Pump Failure Or System Contamination
KC-686
May 20, 2022
180000 VEHICLE SPEED CONTROL
(Back Office Only) Mack Chassis - Cruise Control Inoperative After Disabling The Electronic Stability Program (ESP)
KC-686
May 20, 2022
251000 ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)
(Back Office Only) Mack Chassis - Cruise Control Inoperative After Disabling The Electronic Stability Program (ESP)
KC-663
May 18, 2022
060000 ENGINE AND ENGINE COOLING
Emcon (Spark Assist) Engine Aftertreatment System Troubleshooting Check Sheet - US07 Emissions
KC-653
May 17, 2022
060000 ENGINE AND ENGINE COOLING
Low Oil Pressure Diagnostic Process For 11 Liter Engines
KC-648
May 17, 2022
980000 UNKNOWN OR OTHER
Mack - PTO Pump Speed Calculator
KC-648
May 17, 2022
100000 POWER TRAIN
Mack - PTO Pump Speed Calculator
KC-2169
May 16, 2022
110000 ELECTRICAL SYSTEM
Low Voltage Disconnect (LVD), Function Description
KC-2170
May 16, 2022
020000 SUSPENSION
Electronically Controlled Suspension (ECS) Losing Air Pressure
KC-2172
May 16, 2022
110000 ELECTRICAL SYSTEM
No Start Condition After Over The Air Programing - VECU5 No Start "Safe State"
KC-2172
May 16, 2022
980000 UNKNOWN OR OTHER
No Start Condition After Over The Air Programing - VECU5 No Start "Safe State"
KC-2161
May 13, 2022
060000 ENGINE AND ENGINE COOLING
DEF Pump Cycling periodically Hours After Key Off
KC-627
May 9, 2022
350000 EQUIPMENT
Premium Tech Tool ( PTT ) Training Materials And Support Tools
KC-626
May 9, 2022
100000 POWER TRAIN
Mack Chassis - Vehicles Equipped With An Automated Manual Transmission Model F ( AMT-F, mDrive ), Premium Tech Tool ( PTT ) Gearbox Calibration Failure; Gearbox Calibration Operation Stops And Fails At 33% When Run With Transmission Removed
MACK RW - All Years Overview
Complete safety history for the MACK RW across all model years (1987, 1992).
8
Total Recalls
0
Total Complaints
0
Investigations
0
Reported Crashes
0
Reported Fires
0
Reported Deaths