It could be. You should post what kind of vehicle, things vary. Could
be injector noise too or a bad plug or coil wire even.
If it is a new stereo install, then the ground isn't likely right. They
get the least noise 'usually' with the power and ground fused and run
right to the battery.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
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> hello could it be an alternator problem if when i step on the gas i hear a
> revving like noise through my stereo speakers ? thanks