I'm getting an electric whistle whose pitch varies with my RPMs. At first I thought it was air thru a hole in the firewall while i was moving, but it's all the time, and like i said, pitch varies with rpms, not speed. what should i check to stop this, or add to the system to isolate it? I had a similar sort of thing with a ground loop in my home entertainment system, but i haven't encountered it in a car before. the home one was easy, because i put a ground loop isolator on the coax line. i have no idea where to begin on my car. thx

 

If you're running any kind of a sound system, I'd check all of your grounds on all of your components. If you find that to be the culprit, all is well, if not check the routing of your amp power wires and the RCA cables. If you run them right next to each other or the RCA's are cheap and crappy, they will tend to make the noise you described. Good Luck.

 

turn off your stereo,... see if that does the trick

If so, you can check the post on
interior/audio mods
calling all audio....something like that

its only like a week old
that should help solve your problem

 

I spliced all the grounds together and fed them into the factory harness ground... it does not happen when the system is off, only when power goes to the speakers. searching for that week old post now... will update once I've read and tried that.

"6) If you have the time electrical tape over the metal at the ends of the rca's that conect to the radio I found by doing this it elimates some added noise cause there are so many wires and electrical components in your dash this just gives extra sheilding so plug them in to the radio and then tape over the top. "

I will try this later... I think it's probably it.

[ January 11, 2002: Message edited by: Majin Cthonian ]