# Service bulletin TIB\-E\-087

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10056024
- Published by NHTSA: 2014\-08\-16
- Manufacturer's number: TIB\-E\-087
- Manufacturer's date: 2014\-06\-30
- NHTSA component: ENGINE

## NHTSA's summary

KENWORTH: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. A MAX GOVERNED CC SPEED, ON SOME TRUCKS, WAS PROGRAMMED INCORRECTLY AND LIMITS MAXIMUM DEFAULT SPEED TO 63 MPH. \*PE

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Engine

## Vehicles listed

- 2014 KENWORTH C500
- 2014 KENWORTH C550
- 2014 KENWORTH K300
- 2014 KENWORTH T170
- 2014 KENWORTH T270
- 2014 KENWORTH T370
- 2014 KENWORTH T440
- 2014 KENWORTH T470
- 2014 KENWORTH T660
- 2014 KENWORTH T680
- 2014 KENWORTH T700
- 2014 KENWORTH T800
- 2014 KENWORTH T880
- 2014 KENWORTH W900

## Other bulletins for the same vehicles and component

- [P001](/bulletins/11037541.md), 2026-09-29, Service bulletin: ENGINE. "Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes. 2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."
- [03\-087 \(E295\)](/bulletins/10232496.md), 2023-03-06, Service bulletin: FUEL SYSTEM, OTHER:FUEL FILTER; ENGINE AND ENGINE COOLING. Certain Model Year 2021\-2024 chassis with PACCAR MX engines and optional fuel filter restriction virtual gauge may display incorrect restriction levels. The virtual gauge will be temporarily disabled until a revised sensor strategy is developed.
- [E296](/bulletins/10218895.md), 2022-08-30, Service bulletin: ENGINE AND ENGINE COOLING. Kenworth is providing guidance for PACCAR MX Engine Composite Oil Pan leak troubleshooting to avoid over\-repairs and to provide warrantable repair guidance. Oil leaks, if not repaired, can lead to severe engine damage.
- [21KWD](/bulletins/10198762.md), 2021-07-06, Service bulletin: ENGINE AND ENGINE COOLING. Information Only – C hassis equipped with MY2021 B EPA emission s standards will be shipped through atleast the end of the 2021 calendar year without particulate matter \(PM\) sensors installed .
- [E271](/bulletins/10198760.md), 2021-07-06, Service bulletin: ENGINE AND ENGINE COOLING. An engine software update is required to resolve OBD system readiness, DEF doser diagnostics, and otherOBD system software related issues.
- [32\-018](/bulletins/10188468.md), 2021-03-10, Service bulletin: ENGINE AND ENGINE COOLING. Non\-Safety Campaign – Chassis with the City Horn option may generate unexpected alerts. A VECU software update is available to resolve the issue.
- [27\-026](/bulletins/10186161.md), 2021-02-01, Service bulletin: POWER TRAIN; ENGINE. Eaton ultrashift plus excessive engine over\-speed lamp on.
- [43\-063](/bulletins/10169706.md), 2020-01-04, Service bulletin: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Emissions Campaign – The Engine Overspeed lamp may illuminate during a smoke opacity test. A software update is available to resolve the issue.
- [01\-071](/bulletins/10168709.md), 2019-12-04, Service bulletin: ENGINE AND ENGINE COOLING. Fix\-As\-Fail The evaporator core may crack in vehicles with the ISX\-15 engine. An improved suction line has been released that removes stress transferred to the evaporator core.
- [01\-075](/bulletins/10168703.md), 2019-12-04, Service bulletin: ENGINE AND ENGINE COOLING. Information Only: This bulletin provides guidance for repairing an air\-conditioning system after internal failure of the A/C compressor.

JSON: [/v1/bulletins/10056024](/v1/bulletins/10056024)

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