How many miles? My wires started to go on my '05 before 20,000 miles!
Plugs & wires can never hurt, but only way they'll cause noise is if wires are arcing and you could hear it, which I suspect would give you a misfire error code.
Read this tech bulletin:
09-007-04 03/02/2004 Engine & Engine Cooling:Engine -
Irregular Engine Snapping Sound
OVERVIEW: This bulletin involves chamfering the bore
radius on cam bearing caps L2 through L5 and R2 through R5.
NOTE: This bulletin applies to vehicles equipped with a
2.0L, 2.4L DOHC, or 2.4L Turbo engine (sales code ECC,
EDZ, ED1, EDV, ED2, or EDT).
SYMPTOM/CONDITION: The sound may be noticed when the
engine is idling in park between idle rpm and 1400 rpm at
normal operating temperature. The sound is on the upper
end of the engine (cylinder head) towards the front of the
engine or passenger side (right side). The sound is
irregular, not periodic or harmonious. The frequency of
the sound will increase with RPM. The sound is more of a
higher pitch snapping noise, not a low metallic knock.
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'05 Limited Turbo Lite, (Silver, of course)4-wheel ABS, Sunroof, Spoiler. Mods: E&G Classic grill, K&N FIPK, BTG duals, rear lowered 1.5", LED washer lights, $20 catch can, Aoogah horn, Weatherflectors, Sunroof Deflector, Fuzzy Dice, rear logo flames, rear pinstripe graphic, Gen3 Taillights, rear sway bar, hood struts, Strut bar.
Traded in '02 Silver Touring Edition w/87,000 miles
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