Chart 20
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2009 Mercury Mountaineer, 2009 Mercury Milan, 2009 Mercury Mariner, 2009 Mercury Grand Marquis, and 2009 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
- Engine Noise (Under Hood)
NOTE:
Attempt To Identify The Source Of The Noise. If The Noise Is From A Source Other Than Those Listed Below, Refer To no Diagnostic Trouble Codes (DTCs) Present Symptom Chart Index (For Noise Such As Spark Knock) Or The
Appropriate Service Category To Continue Diagnosis.
Symptom Chart
| System/Component | Reference ( Pinpoint Tests - Gasoline Models Unless Noted) |
|---|---|
| Secondary Ignition System Snap Noise That May Be Due To Secondary Ignition Arcing. | For Vehicles Equipped With A Coil Pack Ignition System, Go To Pinpoint Test JC
. For All Others, Check The Condition Of The Spark Plug Boots. |