Pinpoint Test HG: Positive Crankcase Ventilation (PCV) System: Introduction: Notes
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
This pinpoint test is intended to diagnose the following:
- Positive crankcase ventilation (PCV) valve (6A666) and related vacuum lines.
- Electrically heated PCV valve (6A666) and heater circuit. Both PCM and non-PCM controlled.
- Electrically heated PCV tube (9F624) and heater circuit. Both PCM and non-PCM controlled.