- Engine Mounts: These mounts can deteriorate over time. The rubber in the mounts hardens and may not be visually noticeable. Replacing the front engine mount and transmission mount is advisable.
- Regular Maintenance: If your car hasn’t had its 100k mile tune-up, it's time to consider it. This includes checking the spark plugs, water pump, tensioners, and timing belt (for V6 engines). Valve adjustments can also smooth out engine performance.
- Coil Packs: Occasionally, coil packs can fail, leading to vibration and rough running. Though not a common issue, it's worth inspecting.
- Air Conditioning Load: Running the A/C places extra load on the engine. This is normal and might cause additional vibration, especially when the compressor cycles on and off.
- Seek Professional Advice: If you’re unsure, it’s always best to consult a professional mechanic. If they find no fault codes, insist on checking the engine mounts and other potential mechanical issues.
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