Greetings everyone!

I've got a problem with the radio in my '90 Integra (automatic motorized antenna died a few years ago, was replaced with permanent fixed-type), which delivers excellent reception on FM, but almost none at all when using AM. I've done a little research already, and can't seem to turn up a solution, so I thought I would see if anyone here had ever run into a similar problem. If something was wrong with the antenna lead coming out of the stereo, why would I still get perfect FM? Is there a separate AM antenna somewhere in the car?

Thanks so much for reading my post. Any advice you had would be appreciated.