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Engine Noise

enarginsenargins Posts: 3
edited May 5 in Dodge
My car makes a loud noise under the hood that I can't pin down. The noise is loud, and gets louder when the car is in gear. However, if the A/C is on, then the noise gets quieter, but a different, "chirping" sound is also heard. The car also has been hesitating somewhat when first started. Also, used to have a strong, clean start, without pressing gas pedal. Now it still starts, but seems to struggle sometimes.

Car is 2003 Dodge Caravan SE, 100,000 miles. Spark plugs and wires were just changed, and throttle body cleaned. Fuel system service done 8,000 miles ago. Water pump replaced and belt changed 5,000 miles ago.

Here are two videos that were taken moments apart.

The first is with A/C off:

https://www.dropbox.com/s/1u464a19hvb2d0k/Caravan Engine Noise.No AC.1905.Short.mp4?dl=0

And the second is with A/C on:

https://www.dropbox.com/s/4k64skl7db5boje/Caravan Engine Noise.With AC.1905.Short.mp4?dl=0

Thanks for any feedback!

Comments

  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 64,490
    Sounds like a rotational noise, so maybe some pulley or bearing in one of the belt-driven components. You might want to buy an inexpensive "mechanic's stethoscope" at Autozone to help you pinpoint the noise. Another possibility . if you have the 3.3 or 3.8 engine, is that this is a timing chain or timing chain guide failure. The 3.0 uses a belt.
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