Getting a hum when radio is on

[BC Lightning]

Like the title says, when the radio is on there is a slight, but noticable hum, thought it was the noise blockers under the hood, but when I pulled my blower, the wires were still connected and looked to be intact. Read the manual and found the noise blocker fuse, changed it, still a hum.

any thoughts??

[tiffo60]

does it change when the motor revs?

[Tatom Mack]

you picking up hookers again?:rll:

[dboat]

you picking up hookers again?:rll:


:rll: I kind of thought the same thing when I glanced at the title of the post.. I was thinking hummers when the radio is on.. :evil

[Beaudee]

I believe there is a fan motor in or near the stereo receiver.I have heard mine before.It doesnt run all the time though.Maybe Terry knows where.Sounds like could be your problem.

[Nuhklz]

Turn the radio off and the hum will go away.

[sandpiperx]

Is it a oem or aftermarket radio. If after market I had similar problem. does the hum rise and lower with accelaration if so it could be alternator noise and I had to have a 20 amp in line filter put in between the radio and the power supply (IE:fuse box) and it went away. Just a thought.......mp:tu:

[Bird]

You can hear your radio ?????????? With my Bassani mids and cat-back, the radio is an 'engine off' option only.


Bird

[Silver_2000]

stock radios do have a fan that comes on

Can be loud in some cases

[Tex Arcana]

stock radios do have a fan that comes on

Can be loud in some cases
Yeah, what ^he^ said, the early radios without the in-dash CD changers (02 and below?) do'nt ahve that fan. When I put in that '03 unit, I could hear the fan if the volume was turned down.

[BC Lightning]

Its an aftermarket pioneer touch screen, I had it installed before I put the ported blower on my truck, it gets louder when the motor revs


You can hear your radio ?????????? With my Bassani mids and cat-back, the radio is an 'engine off' option only.
Bird

Yup I could hear it when I was running open headers (no cats or mufflers), and now that I put gutted cats and new mufflers on

[PoorSvtman]

need a noise filter.... and should fix it.. or try moving the little filters that bolt to the intake..

[Tex Arcana]

Sounds like you eitehr inadvertently disconnected the noise filters, they failed, or you didn't install 'em in the first place. Which is it?

[PoorSvtman]

Sounds like you eitehr inadvertently disconnected the noise filters, they failed, or you didn't install 'em in the first place. Which is it?

Or its just a simple placement of a ground.. Some aftermarket headunits pick up ignition noise no matter what you do. So you need to get filters