Engine Control - Idle Speed Too Low When Cold

Article No.
03-21-35

10/06/03

^ IDLE - IDLE SPEED TOO LOW WHEN COLD -
VEHICLES WITHOUT CRUISE CONTROL AND WITH
7.3L DIESEL ENGINE

^ ENGINE - 7.3L DIESEL - IDLE SPEED TOO LOW
WHEN COLD - VEHICLES WITHOUT CRUISE CONTROL

FORD:
1999 SUPER DUTY F SERIES, F-650

Article 99-18-2 is being republished in its entirety as part of a consolidated 7.3L diagnostic aid booklet.

ISSUE

On some vehicles not equipped with cruise control, the engine may idle at the normal engine RPM but lacks the cold engine idle kicker function to raise the engine RPM similar to those vehicles equipped with cruise control. This may be due to the Powertrain Control Module (PCM) strategy.

ACTION





Reprogram the PCM. Refer to the PCM Reprogramming Information Table shown for calibration details.





Obtain an Authorized Modifications Decal (FPS 8262 - obtainable through DOES II, 25I/pkg) and list the date, dealer number, and summary of modifications performed. Select a prominent place adjacent to the Vehicle Emission Control Information Decal suitable for installing the Authorized Modifications Decal. Clean the area, install the decal, and cover it with a clear plastic decal shield.

OTHER APPLICABLE ARTICLES: NONE
SUPERSEDES: 99-18-2
WARRANTY STATUS: INFORMATION ONLY





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