problem with engine noise through my intercom

[Curtis Guise]

Anyone else have this problem? Scott at PCI told me to make sure the intercom and race radio are all grounded to the same spot but that didn't work. He is prerunning in Baja so I don't know if he will be back with more ideas before I leave so I thought I would ask on here if anyone has dealt with this.

I have the 4-link intercom, the ground wire and the other ground fromt the corner of the box are grounded in the same spot as my race radio. when the race radio is turned off you can only hear a light engine noise when the squelch is turned off or when you talk. Once I turn the race radio on the noise gets pretty bad regardless if you hear the radio through the intercom or not.
To make it worse I wired in my XM radio to the intercom and when that is on the noise is crazy....

I think I might try one of those inline power noise filters.

any other suggestions?

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[ShaneR]

I can't remember which one it is but I thought in the instructions to wire your radio and intercom you didn't hook up one of the grounds? Not sure if that is on all the PCI kits or just the older intercoms, maybe someone else has a better memory?

[Socalsixpack]

If you didn't wire one of the grounds, it probably wouldn't work. Are your cables within 2' of any sort of ignition components? I know they advise against that...

[sickrick]

Are you running solid core ignition wires? They cause a lot of radio noise. A bad or shorted wire can cause the same problems.
The alternator can also cause alot of noise, try disconnecting it and see if that helps.

These are the usual culprits with a cb style radio, I don't know if this is the same for a race radio.

[Curtis Guise]

my plug wires are stock Toyota ones for the 3.4 V6, alternator is stock also. I have a fuse block between the seats where everything that isn't stock is wired to. (lights, race radio, intercom...) so all of that is far enough away from ignition wiring. There is a ground wire on the corner of the box of the intercom and Scott said to ground that in the same place as the other ground for the intercom.

I just picked up a couple of noise filters from Fry's so I will try those on the intercom and race radio tomorrow and see if that helps.

[Jerry Zaiden]

Do you have a noise filter on your power wire? Also hook up your power and ground to the battery. Use a good fuse on the power, +, Red, etc... Run the fuse as close to the battery as you can. Make sure you use #10 wire for both powr and ground. This will give you more power.

[DSPracing]

I don't know if this applies to your setup but it's worth a shot. I getting "engine noise" through my car stereo because the power cable touched the RCA cable. Maybe if your power cable is in contact with part of your intercom wiring? Hope this helps...

[racetrash]

like camburg said, straight to battery, and do not connect the ground up on the intercom, it will ground through the radio

[Jack]

With the ground hooked up to both, and the ground that conects them creates a loop like and antenna. Try taking off the ground to the intercom. It dose not take much power so it is safe to ground throught the radio. I have had to do this a few times and never a problem. In some cars it works fine with all the grounds hooked up.

[billymanfroy]

DO NOT ground the intercom if you have it hooked to the radio. The ONLY time you use the intercom ground is if you are not using the radio. The intercom gets its ground through the plug that the hand mic would ordinarily go into.

Oh, and make sure you turn it all the way up and your codog has his plugged in and then plug in yours really slowly. You won't believe the screams!

Good luck, dude!