Engine Controls/Emissions - Exhaust Sulfur Smell: Overview

Article No.
02-21-6

10/28/02

^ DRIVEABILITY - EXCESSIVE SULFUR SMELL FROM EXHAUST

^ EXHAUST - EXCESSIVE SULFUR SMELL FROM EXHAUST

FORD:
2001-2002 EXPLORER SPORT
2002 EXPLORER SPORT TRAC
2002-2003 EXPLORER

MERCURY:
2002-2003 MOUNTAINEER

Article 02-16-6 is being republished in its entirety to update the Service Procedure and model years.

ISSUE

Some vehicles may exhibit excessive sulfur smell from the exhaust under certain drive modes. This may be due to the highly active state of a new catalyst, calibration factors, underbody catalyst temperature, and amount of sulfur present in the fuel.

ACTION

Identify year, model, and build date to identify appropriate service procedure. For applications that require installing exhaust wrap, use good quality stainless steel worm-drive hose clamps for best longevity, similar to what would commonly be used for exhaust heat shield rattle issues.

OTHER APPLICABLE ARTICLES: NONE

SUPERSEDES: 02-16-6

WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage And Emissions Warranty Coverage

OPERATION DESCRIPTION TIME

022106A Install Exhaust Wrap And 1.4 Hrs.
Perform Drive Sequence.
2002-2003
Explorer/Mountaineer 4.0L
Vehicles Built 1-14-02
Through 12-02-02, 4.6L
Built Prior To 12-02-02

022106B Install Exhaust Wrap, 1.6 Hrs.
Reprogram Powertrain
Control Module And
Perform Drive Sequence.
2002-2003
Explorer/Mountaineer 4.0L
Built Prior To 1-14-02

022106C Replace Catalytic 0.8 Hr.
Converter And Reprogram
Powertrain Control Module.
2001-2002 Explorer Sport
Vehicles Built 7-24-00
Through 3-4-02, 2002
Sport Trac 11-02-01
Through 3-4-02

022106D Replace Catalytic 0.6 Hr.
Converter Only. 2002
Explorer Sport/Sport Trac
3-4-02 Through 3-27-02
With Automatic
Transmission, 11-02-01
Through 3-4-02 With
Manual Transmission

DEALER CODING
CONDITION
BASIC PART NO. CODE
5F250 42

OASIS CODES: 403000, 499000





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