Sorry for any non-technical descriptions, I'm not too knowledgable in the vehicle area. I recently bought a 90 RS, and after driving it for about 3 weeks it started doing strange things. The previous owner replaced the original radio with a newer stereo, and it randomly looses power for a few seconds every now and then. Sometimes it looses everything it had in the memory (programmed channels, time, etc), other times it just comes back on and everything is fine. It also happens sometimes when I use the power windows.
The latest thing that happened is that the stereo lost power, then the speedometer jumped from 35mph to about 55 and at the same time the rpm gauge jumped and the infl rest light flashed a few times. Any idea what might be causing this? I would appreciate any ideas or suggestions, thanks.