Problems with Rough Idle on Certain C15 Truck Engines{1901, 1920} Caterpillar

Engine:

C15 (S/N: SDP1-UP)

Introduction

The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.

Problem

Some engines that are listed above experience rough idle at approximately 500 rpm and no throttle response.

Solution

If the engine is experiencing rough idle at approximately 500 rpm and no throttle response, flash the Engine Control Module (ECM) with 343-XXXX or newer software.