Cylinder Head - MIL ON/DTC P0400 Set
Article No.96-25-8
12/02/96
^ MALFUNCTION INDICATOR LAMP (MIL) - MIL LAMP ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE (DTC) P0400 STORED IN MEMORY
^ LAMP - MALFUNCTION INDICATOR LAMP (MIL) - MIL LAMP ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE (DTC) P0400 STORED IN MEMORY
FORD:
1996 ASPIRE
ISSUE:
The Malfunction Indicator Lamp (MIL) may illuminate and Diagnostic Trouble Code (DTC) P0400 may be stored in memory on some vehicles. This may be caused by the Exhaust Gas Recirculation (EGR) port in The cylinder head becoming plugged due to casting sand left in the head during the manufacturing process.
ACTION:
Replace the cylinder head. The new cylinder heads have been inspected and verified the EGR passage port is free of casting sand. Refer to the following Service Procedure for details.
SERVICE PROCEDURE
1. Verify DTC P0400 is present. Perform normal diagnostics following Pinpoint Test HE of Section 6B of the 1996 Powertrain Control/Emissions Diagnosis (PC/ED) Service Manual.
2. If the concern is not resolved, remove the EGR vacuum line and use a vacuum simulator to apply vacuum to the EGR valve. The vehicle should begin to run rough and eventually stall as vacuum is applied. It little or no change occurs, inspect for an obstruction and/or restriction in the EGR passage(s).
3. Remove the EGR valve and inspect for obstruction. If no obstruction is found, work back toward the cylinder head, inspecting for obstructions.
4. If a blockage is found within the cylinder head, replace the cylinder head. Refer to the 1996 Aspire Service Manual, Section 03-01, for removal and installation procedures.
PART NUMBER PART NAME
F4BZ-6049-A Cylinder Head
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage And Emissions Warranty Coverage
OPERATION DESCRIPTION TIME
962508A Inspect For Blockage 0.4 Hr.
962508B Additional Time To 5.0 Hrs.
Replace Cylinder Head
DEALER CODING
CONDITION
BASIC PART NO. CODE
6049 49
OASIS CODES: 206000, 698298