EGR/PFE - MIL ON/DTC's Stored In Memory: Overview

Article No.
98-2-3

02/02/98

^ MALFUNCTION INDICATOR LAMP (MIL) - MIL
ILLUMINATED - DIAGNOSTIC TROUBLE CODES
(DTCS) 327 AND 332 (31 AND 32 FOR 1988-91
MODELS) - AT ALL AMBIENT TEMPERATURES -
NO DRIVE CONCERNS - VEHICLES WITH 2.3L HSC
(1988-94) OR 3.0L ENGINE (1992-94)

^ LAMP - MALFUNCTION INDICATOR LAMP (MIL)
ILLUMINATED - DIAGNOSTIC TROUBLE CODES
(DTCS) 327 AND 332 (31 AND 32 FOR 1988-91
MODELS) - AT ALL AMBIENT TEMPERATURES -
NO DRIVE CONCERNS - VEHICLES WITH 2.3L HSC
(1988-94) OR 3.0L ENGINE (1992-94)

FORD:
1988-94 TEMPO

LINCOLN-MERCURY:
1988-94 TOPAZ

This TSB article is being republished in its entirety to add the 3-digit DTCs for 1992-94 models.

ISSUE:
The Check Engine" Malfunction Indicator Lamp (MIL) may be on intermittently at all ambient temperatures. Diagnostic Trouble Codes (DTCs) 327 and 332 (31 and 32 for 1988-91 models) may be stored in continuous memory without noticeable drive symptoms. The MIL activation may also be caused by water freezing in the Pressure Feedback EGR (PFE) sensor hose at cold ambient temperatures.

ACTION:
Use the following Service Procedure to determine if the PFE EGR system is at fault (hard failure) or water is freezing in the PFE hose and sensor.

OTHER APPLICABLE ARTICLES: NONE
SUPERSEDES: 98-1-5
WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage For 1992-94 Vehicles, Basic Warranty Coverage For All Other Models, And Emissions Warranty Coverage For All Model Years

OPERATION DESCRIPTION TIME
980203A Replace PFE Sensor Assembly 0.3 Hr.

DEALER CODING
CONDITION
BASIC PART NO. CODE
9J433 12

OASIS CODES: 204100, 206000, 698298