Exhaust - Sulfur Smell

9215ford01

Article No.
92-7-9

03/25/92


EXHAUST - SULFUR SMELL - 3.0L - VEHICLES WITH
A4LD TRANSMISSION


LIGHT TRUCK: 1991 AEROSTAR


CALIBRATION: 9-56J-R11

WARNING: THIS MODIFICATION IS AUTHORIZED ONLY FOR THE LISTED ENGINE. PERFORMING THIS MODIFICATION ON OTHER ENGINE CALIBRATIONS IS UNAUTHORIZED AND COULD CREATE LIABILITY UNDER APPLICABLE FEDERAL OR LOCAL LAWS.

ISSUE: An objectionable exhaust sulfur (rotten egg) smell may be experienced during various driving conditions. This is caused by the operating strategy of the EEC-IV processor.

ACTION: Use the following service procedure to determine if a new EEC-IV processor with revised operating strategy is required.


1. Perform the diagnostic procedures in the 1991 Engine/Emissions-Diagnosis Manual. Service as required.

2. If the sulfur smell still exists, install a new EEC-IV processor (F1PZ-12A650-C).





Obtain an Authorized Modifications Decal and list the date, dealer number, and summary of alterations 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.


PART NUMBER PART NAME CLASS

F1PZ-12A650-C EEC-IV Processor B

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: Eligible Under Basic Warranty
Coverage, Emissions
Warranty Coverage
OPERATION DESCRIPTION TIME
920709A Diagnosis 0.5 Hr.
920709B Diagnosis And Install 0.9 Hr.
Processor
DEALER CODING
BASIC PART NO. CONDITION CODE
12A650 08
OASIS CODES: 403000