PFE EGR System - MIL ON/DTC's 327/332 Set
Article No.98-1-7
01/19/98
^ MALFUNCTION INDICATOR LAMP (MIL) - MIL
ILLUMINATED - DIAGNOSTIC TROUBLE CODES
(DTCS) 327 AND 332 - AT TEMPERATURES OF 0
DEGREES C (32 DEGREES F) OR BELOW - NO
DRIVE CONCERNS - VEHICLES WITH 3.0L ENGINE
^ LAMP - MALFUNCTION INDICATOR LAMP (MIL)
ILLUMINATED - DIAGNOSTIC TROUBLE CODES
(DTCS) 327 AND 332 - AT TEMPERATURES OF 0
DEGREES C (32 DEGREES F) OR BELOW - NO
DRIVE CONCERNS - VEHICLES WITH 3.0L ENGINE
FORD:
1992-94 TAURUS
LINCOLN-MERCURY:
1992-94 SABLE
ISSUE:
The "Check Engine" Malfunction Indicator Lamp (MIL) may be on intermittently at ambient temperatures of 0°C (32°F) or below. Diagnostic Trouble Codes (DTCs) 327 and 332 may be stored in continuous memory without noticeable drive symptoms. The MIL activation may 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.
DIAGNOSTIC PROCEDURE
1. Perform normal diagnosis to be sure that no hard fault is present. Refer to the 1993 Powertrain Control/Emissions Diagnosis (PC/ED) Service Manual for MIL lamp concerns.
2. Check for DTC 327 or 332 in "key On Engine Off" (KOEO) and "Key On Engine Running" (KOER) Self Test modes. Service as required.
3. If DTCs appear only in Continuous Memory mode, install the appropriate PFE large port service sensor, bracket and hose.
NOTE:
THE LARGE PORT SERVICE PARTS USED IN THE FOLLOWING PROCEDURES SHOULD ONLY BE USED ON THESE NOTED VEHICLES IN COLD CLIMATES WITH CONSISTENT MIL AND MEMORY-CODE-ONLY TYPE FAILURES - WHERE THE PFE SENSOR IS NOT A HARD FAILURE. THE PRE-EXISTING SMALL PORT SERVICE KIT IS RECOMMENDED WHERE THE SENSOR IS A HARD FAILURE. WATER IN THE SENSOR PORT IS NOT SUFFICIENT CAUSE FOR REPLACEMENT. WATER IS A NATURAL BY-PRODUCT OF COMBUSTION AND DOES NOT ADVERSELY AFFECT PERFORMANCE OF THE PFE SENSOR.
SERVICE PROCEDURE
1. Remove the existing PFE sensor assembly (sensor, hose, and bracket) from the upper intake manifold.
2. Disconnect the electric connector.
3. Connect the electrical connector to the new PFE sensor.
4. Install the new service assembly (large port sensor, bracket, and hose). Attach the bracket with the the existing bolt in the same location as the old PFE sensor assembly on the intake manifold. Torque bolt to 8-11 N.m (6-8 lb-ft) (Figure 1).
5. Install the PFE sensor hose to the Exhaust Gas Recirculation (EGR) tube with the clamp provided.
6. Clear DTC from Continuous Memory.
7. Re-run Self Test and verify that pass codes are received in KOEO, KOER and continuous.
Obtain an Authorized Modification 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.
PART NUMBER PART NAME
F3DZ-9J433-A PFE Sensor Assembly
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage And Emissions Warranty Coverage
OPERATION DESCRIPTION TIME
980107A Replace PFE Sensor Assembly 0.3 Hr.
DEALER CODING
CONDITION
BASIC PART NO. CODE
9J433 97
OASIS CODES: 204100, 206000, 698298