Weird sound coming to a stop
#1
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Hey hey! Wanted to run this by you guys to see if you've experienced something similar:
On the 2002, when coming to a stop, not all the time, but most of the time lately, there's a rumbling noise that's audible when the stereo is off. Not super loud. It's the same sound that you here when a lifted pickup drives by with mudding tires. That low drone. It sounded like its coming from the back, but hard to know for sure. I popped the back wheels off yesterday to do a quick visual and everything looks good. Pads are great, rotors are great. Ideas? I guess I could start to consider the hub?
On the 2002, when coming to a stop, not all the time, but most of the time lately, there's a rumbling noise that's audible when the stereo is off. Not super loud. It's the same sound that you here when a lifted pickup drives by with mudding tires. That low drone. It sounded like its coming from the back, but hard to know for sure. I popped the back wheels off yesterday to do a quick visual and everything looks good. Pads are great, rotors are great. Ideas? I guess I could start to consider the hub?
#3
#7
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#8
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My opinion will surprise many.
Something in the computer or climate computer senses the vehicle speed decreasing to about 4MPH and a servo closes (or opens) a ventilation flow gate by the passenger feet area. It also sounds the same in reverse (restoring) the ventilation gate position when accelerating from a stop up to 4MPH if the engine is quiet enough.
Exposed the behavior previously on some post but seems nobody hears it. I suspect the climate system exterior air intake (or recirculation) changes when moving and when stopped by some esoteric minuscule design reason.
Some day I will try to come to a stop quietly with engine (key) off to compare if the noise persists, or start downhill with engine off to confirm the same noise reversal.
Brandon : try a small kid as helper, head stuck under the glove box and paying attention to the noise source area while reaching a stop.
And come back with findings !
Something in the computer or climate computer senses the vehicle speed decreasing to about 4MPH and a servo closes (or opens) a ventilation flow gate by the passenger feet area. It also sounds the same in reverse (restoring) the ventilation gate position when accelerating from a stop up to 4MPH if the engine is quiet enough.
Exposed the behavior previously on some post but seems nobody hears it. I suspect the climate system exterior air intake (or recirculation) changes when moving and when stopped by some esoteric minuscule design reason.
Some day I will try to come to a stop quietly with engine (key) off to compare if the noise persists, or start downhill with engine off to confirm the same noise reversal.
Brandon : try a small kid as helper, head stuck under the glove box and paying attention to the noise source area while reaching a stop.
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Brandon318 (05-12-2022)
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