take a shot at this engine noise
#2
Launching!
Join Date: Mar 2009
Location: Bolingbrook, illinois
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First thing that came to mind is interference from the engine to the speakers.
Some vehicles come with a wired in resistor to clean the power up from the battery.
Years ago in my dads 97 c1500 he put in an old style hands free with the corded mic and speaker that plugged into the cig lighter. As he drove, the speaker unit made that high pitched whirring noise and it got louder with revs. It was the injector pulses that were being picked up. Just my 2 pennies.
Some vehicles come with a wired in resistor to clean the power up from the battery.
Years ago in my dads 97 c1500 he put in an old style hands free with the corded mic and speaker that plugged into the cig lighter. As he drove, the speaker unit made that high pitched whirring noise and it got louder with revs. It was the injector pulses that were being picked up. Just my 2 pennies.
#4
Staging Lane
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Join Date: Aug 2012
Location: atl ga
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hey
Yes it changes with rpm. And if i change the load on it. It quiets are gets louder. My 1st thought was tourque converter bolts lose. But its top of the motor or bell housing area. And for some reason my valves are starting to chatter more any thoughts?