I have a very annoying problem. Engine starts up and runs well. Then after about 10 min starts to cut out. Either when moving when it hiccups and restarts or when idling when it can be immediately restarted. The Check Engine light flickers on and off (1993 model OBD I). The voltmeter flickers a bit. I have replaced the fuel pump inertia switch and PCM relay to no effect. I have the alternator voltage regulator on order. Grounds have been checked. Anything else I should be looking at?