Engine Controls - White Smoke/Poor Fuel Economy: Overview
NUMBER: 18-037-04GROUP: Vehicle Performance
DATE: September 27, 2004
THE DRBIII(R) FLASH FILES FOR THIS BULLETIN ARE AVAILABLE ON DealerCONNECT.
FOR MARKETS OUTSIDE OF THE UNITED STATES AND CANADA, THE FLASH FILES AND REPROGRAMMING INSTRUCTIONS WILL BE AVAILABLE ON ITIL/ISIS DVD NOVEMBER, 2004.
SUBJECT:
Flash: Fuel Economy Improvement, White Smoke On Start Up, Accuracy Of Fuel Mileage
In Overhead Console Display
OVERVIEW:
This bulletin involves erasing and reprogramming the Cummins ECM with new software.
MODELS:
2004 - 2005 (DR) Ram Truck
NOTE:
This bulletin applies to DR vehicles equipped with a 5.9L Cummins Turbo
Diesel engine (sales code ETH), with an engine serial number 57130285 through and including 57246361; and the engine date of manufacture 12/10/2003 through and including 8/17/2004.
SYMPTOM/CONDITION:
The following enhancements are included with this software:
^ Improved Fuel Economy - A new ECM calibration has been developed which should provide customers an average fuel economy improvement of approximately 1 M.P.G.
^ Reduces white exhaust smoke on cold start at temperatures below 50 deg. F (10 deg. C).
^ Improves accuracy of the fuel economy calculation in the overhead console display.
SPECIAL TOOLS/EQUIPMENT REQUIRED:
DIAGNOSIS:
Using a Scan Tool (DRBIII(R)) with the appropriate Diagnostic Procedures Manual, verify all engine systems are functioning as designed. If DTC's are present, record them on the repair order and repair as necessary before proceeding further with this bulletin.
If the vehicle operator describes or the technician experiences the Symptom/Condition, perform the Repair Procedure.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
FAILURE CODE:
Disclaimer:
This bulletin is supplied as technical information only and is not an authorization for repair.