Engine Control - Buck/Surge with Speed Control Engaged

Article No.
03-21-40

10/06/03

^ DRIVEABILITY - BUCK/SURGE FELT WITH SPEED
CONTROL ENGAGED - 7.3L ENGINE ONLY

^ ELECTRICAL - BUCK/SURGE FELT WITH SPEED
CONTROL ENGAGED - 7.3L ENGINE ONLY

^ ELECTRICAL - SPEED CONTROL - BUCK/SURGE
FELT WITH SPEED CONTROL ENGAGED - 7.3L ENGINE ONLY

FORD:
1997 F-250, F-350
1999-2000 F SUPER DUTY
2000 EXCURSION

Article 00-25-4 is being republished as part of a consolidated 7.3L diagnostic aid booklet and to update the calibration table.

ISSUE

Some vehicles may exhibit an engine buck, surge, or jerk (also known as hitching/hesitation) while the speed control is active through all engine temperatures. This may be caused by the calibration and strategy of the Powertrain Control Module (PCM).

ACTION








Reprogram the PCM. Refer to the PCM Calibration Information Chart shown for details.

NOTE
IF THERE IS A BUCK/SURGE CONDITION WHILE NOT USING THE SPEED CONTROL, OR DURING ENGINE WARM-UP, REPROGRAMMING THE PCM WILL NOT CORRECT THE CONDITION.





Obtain an Authorized Modifications Decal (FPS 8262 - obtainable through DOES II, 25/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: 00-25-4
WARRANTY STATUS: INFORMATION ONLY





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