Wine in AM radio after tune up?? - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

Quadsteer · 08-23-2005, 10:31

After changing the plugs and boots along with ig. coil springs I have a wine, that gets faster and slower with engine speed, on AM radio channels. I didn't have the wine before. I finally fixed my chk. eng. lite problem with an egr valve, solonoid, and plugs and wires in my '01 Grand Marquis. The car runs great but the wine really bothers me. On of the boots had two slits in the rubber but I changed them all. I cleaned corosion off some of the coil contacts and used dialetctric grease on the contacts and plugs.Is there any way to check where the wine is coming from? I used OEM plugs but the boots and springs were from Carquest.

BlueSteel · 08-23-2005, 14:01

It might be the electro magnetic feilds put out by the ignition. Did you make sure to plug every little diode back together, theres these little 1/2" round x 2 or 2-1/2" canisters that keep the magnetic feild in balance. They have one wire going to them. Mostly on the coils base, they have to be grounded to the coil base or metal base. Also, when you say coil spring you do mean the coil packs? Coil springs are suspension parts.

Quadsteer · 08-23-2005, 14:19

The "springs" I'm talking about are the ones that go from the coil to the plug. I don't see any diodes to plug and the coils are plastic and are grounded through their wire harness. I took the spring and boot off the coils and put them on better than they were on before. I did notice that the boots and "springs" were not as good quality as the OEMs. Mabye there is an arc somewhere. You can't just pull a plug wire off and test it, you have to take the individual coils off. I'll try an ignition tester first.

BlueSteel · 08-23-2005, 20:09

Oh, sorry, its the seperate coils for 01, I was thinking 95 for some reason. It just might be that there thinner, the motorcraft on my F-350 are thick. I think the boot is $45 and the coil is $172 from autozone over here. I wonder if the spring isn't reaching a plug or two and causing a arc? What gap did you put the plugs at?

Quadsteer · 08-24-2005, 16:09

Whatever the factory setting was. I think it was .054. I'll have to check each coil. Just thought that someone else may have had this problem before.

BlueSteel · 08-24-2005, 19:49

I had that problem on a 2 coil digital ignition, a diode went bad, then I replaced it and the fuzz and wine went away. The only other thing I can think of is maybe you cracked a spark plug and its arcing out through the boot or arcing across the broken plug. That would cause a radio to wine. My 87 crown wined cause I cracked the porsilin on the plug and it arc'ed to the head. But it melted a tiny hole in the boot, maybe 1/8 hole.