Originally Posted by alaxfire

Does the interference vary with engine RPM ?
( not that I have a clue what it might be, but that would be a starting place )

Maybe take a little portable AM radio and search around in the engine compartment for the loudest interference ?

Originally Posted by pizzaguy

Problems with the ground in the antenna system can cause this. This can be in the connector at the radio end, or in the mount at the antenna end. It can also be in the head unit itself, (an open ground between the AM antenna tuning circuit and the antenna connector ground). This can be diagnosed with a head unit from another Crossfire; if you take the unit from the other car and it does not do it in YOUR car, your head unit is to blame.

As to the antenna:
I' have never taken my antenna mount apart, never had the problem myself, and I've never looked closely at how the antenna mount goes together. Sorry I can't be of more help.

I would try swapping head units with another Crossfire if anyone has one close to you. This is an EASY diagnostic trick, at least you'll know if the head unit is OK, then you can move on from there.

Is this a Coupe or Roadster?

Originally Posted by alaxfire

Go to Community, Members List, Search, Advanced Search and put in 'Tampa' for the location.
Then look for members that have visited this month.
Send 'em a PM and see if anyone is willing to try PG's swap idea ......

Originally Posted by pizzaguy

Radio problems are my specialty (I've earned a living in Radio for 30 years) ... I wish I was closer and could help more.

IF I miss any more of your posts, send me a PM and I'll do what I can from here!