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Whistling noise from the engine bay after sitting outside in the rain or coldstart

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Old 11-29-09, 06:51 PM   #1
Vantage_6
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Arrow Whistling noise from the engine bay after sitting outside in the rain or coldstart

I have this weird whistling noise from the engine bay that happens when I leave my car parked outside after a rainstorm or outside overnight (morning coldstart). It's fine if it's warm outside or dry.

It's almost like the belts are whining/whistling? The noise becomes louder when I depress the gas pedal as well.

Any ideas as to what I'm dealing with?

My best guess at this point is I need my belts replaced but I thought I'd ask everyone before I see my dealer. My RX is at just over 80k
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Old 11-29-09, 08:09 PM   #2
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Yes, it's most likely the belts, but doesn't indicate a problem per se. They do the same thing to me on occasion after rain or even after a cold night (because they contract in the latter case and are slippery in the first). I replaced my belts around 82K or so (more convenient to do so at the time I did it and also did the water pump).
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Old 12-10-09, 07:12 PM   #3
Vantage_6
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Good to know. I meant 80 000km btw so it sounds like I have some time to spare before replacing the pump/belts!

Dealer said it's nothing major and that my belts aren't really due to be replaced quite yet.

Thanks
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Old 04-23-11, 03:33 PM   #4
Shayy
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Okay so i'm bringing this thread up because i'm having this problem. It just stormed insanely in missouri and my car was in the parking lot at work. I noticed today(a day later) that my engine is whistling, and i can tell it's the belt by the sound. Does it go away after a few days or so?
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Old 04-23-11, 05:17 PM   #5
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yeah its the belts. My mechanic fixed it on the spot in about a minute by tightening some bolts and now it hasn't done it for over 2 weeks. It used to every time it rained or even some light dew in the mornings. But even after a heavy down pour nothing
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bay, car, clicking, cold, engine, enging, hs250h, lexus, noise, noises, rain, rains, side, sitting, sound, start, whistling

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