Sable V6-183 3.0L DOHC VIN S MFI (1997)
Intake Manifold: All Technical Service Bulletins
Engine Controls - MIL ON/DTC P1518 Set (IMRC)
Article No.
02-15-3
08/05/02
DRIVEABILITY - MALFUNCTION INDICATOR LAMP
(MIL) ILLUMINATED WITH DIAGNOSTIC TROUBLE
CODE (DTC) P1518 INTAKE MANIFOLD RUNNER
CONTROL (IMRC) - VEHICLES EQUIPPED WITH 3.0L
4V ENGINE ONLY
FORD:
1996 - 1999 TAURUS
MERCURY:
1996 - 1999 SABLE
ISSUE
Some vehicles equipped with the 3.0L 4V Duratec engine may exhibit a Malfunction Indicator Lamp (MIL) illuminated with a Diagnostic Trouble Code
(DTC) P1518, Intake Manifold Runner Control (IMRC) stuck open, with no driveability concerns present. This may be caused by the calibration of the
Powertrain Control Module (PCM).
ACTION
Verify condition and DTC P1518 is present. If DTC 1518 is present, check for freedom of rotational movement in the Lower Intake Manifold Plates. If
the manifold plates rotate freely, reprogram the PCM. The new calibration strategy will cycle the IMRC when the vehicle speed has exceeded 40 MPH
(64 KM/H) and deceleration occurs. The IMRC will cycle after every other drive cycle over 40 miles per hour. This will eliminate sludge build up in the
IMRC. Refer to the following Service Procedure for details.
SERVICE PROCEDURE
1.
Manually rotate the Manifold Lever Arm to verify that the Lower Intake Manifold Plates rotate freely. If plates do not move freely, refer to
Workshop Manual Section 03-12 to service before continuing with this article.
