Engine Control - Poor Acceleration Response

Article No.
03-21-6

10/06/03

DRIVEABILITY - ACCELERATOR PEDAL - LACK OF
ACCELERATOR CONTROL WHEN MOVING FROM
IDLE POSITION - POOR OR NO ENGINE
RESPONSE - 7.3L DIT

FORD:
1994-1995 F SUPER DUTY, F-250, F-350
1995 E-350

Article 95-10-10 is being republished in its entirety as part of a consolidated 7.3L diagnostic aid booklet.

ISSUE

A lack of accelerator control when moving off of the idle position may occur on some vehicles. The vehicle's engine will be at idle RPM only. This may be caused by the Idle Validation Switch (IVS) contacts not properly closing due to interference of contacts with the switch housing.

ACTION

Remove and install a revised accelerator pedal assembly which includes IVS. Refer to the appropriate year 7.3L Turbo Diesel Service Manual Supplement, Pages 10-02-2 and 10-02-3, for service procedures.

NOTE
THE IVS DATE OF MANUFACTURE IS STAMPED NEAR ITS CONNECTOR MATING SURFACE. THE DATE CODE READS AS FOLLOWS: TWO (2) DIGITS FOR CALENDAR YEAR, FOLLOWED BY TWO (2) DIGITS FOR WEEK OF CALENDAR YEAR WHEN MANUFACTURED. FOR EXAMPLE: 9503 INDICATES SWITCH MADE THE THIRD WEEK OF 1995.

NOTE
ALL SWITCHES WITH A DATE CODE OF 9510 AND LATER HAVE THE CORRECTED SWITCH HOUSING.





PARTS BLOCK

OTHER APPLICABLE ARTICLES: NONE
SUPERSEDES: 95-10-10
WARRANTY STATUS: INFORMATION ONLY





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