I have the same problem as the guy with the 91 6 cyl, except I have a 91 formula. The car starts and runs fine, but sometimes, and more frequently lately than before, the security and infl restraint lights flash on and off, I lose power to the radio, and the car runs like crap and wants to stall. If I give it gas, it runs worse, when the car is stopped, the problem stops. When the lights go off it goes back to normal. The car also shakes bad when this happens. Does anyone know what could cause this? Any suggestions could help.