I've never seen or heard of a stock car radio (or any radio for that matter) doing this. I own an 87 GTA. Completely stock radio (AM/FM with EQ and cassette). I was riding down the road with the radio on and hit a few potholes (nothing major). At first it seemed like the radio skipped a few stations or something hit the tuner button (it has no *****, just buttons). Nope. It started, on its own, moving through the stations/frequencies on the dial. No change to the digital screen or anything else. It does this once in a while. I can not reproduce it and when it does it, there isn't anything I can do to correct it.

Any ideas?

 

probably has some broken solder joints on the circuit boards-a common problem and an easy fix if you are used to radio repair.

 

I second that. Cold solder joints! If you pull the radio, and take it apart post pictures. I can show you where to start re-soldering. You should probably replace the filter caps on the amp board when it is apart. A good tune up and you should get another 27 yrs out of it no problem.

 

Cord solder is the right way togo

 

Man thats pretty cool to offer this for him...

 

Mine does this too! its sooooo weird. it will work fine then all of a sudden (on a smooth road) just cut out or start going through the stations. im confused and will probably send too get fixed cause im nat an electronics guy.