high pitch sound while accelerating, help Options

[do_0b]

Hi, my 94 gt auto is occationaly making a high pitched sound while i acclerate. it kinda sounds electronic, kinda like a rc car. it would only be while im stepping on the gas and it would go away if i let off the gas or brake. and when i come to a complete stop you would hear it again while decelerating from around 2k rpm. does anybody have any idea what this is?? any help would be greatly appreciated

[shid]

Bad ground somewhere. Most likely the head unit/CD player. Upgrading the grounding kit won't fix it. You're hearing it on deacceleration because the engine downshifts and the revs temporarily increase for a couple seconds. It's called engine noise, and it's quite common. Check the grounds of any custom equipment you have installed; I grounded everything to the same point and it's worked great since then.