Ok this is going to sound weird, but I was driving to work the other day and my 1991 4x4 DX EC 3.0 5 speed just cut out for a split second and then kept running fine. So I say to myself what the hell was that but I put it out of my mind as the truck was running fine. Today it happens again and I happened to be looking at the dash when it happened and the cel went on and off in a blink as well. Just cuts out for a split second and then runs perfectly fine. Let the Toyota Gods start offering their wisdom. Please help if you can.
Thanks as always

 

Could be grounds...could very well be a number of sensors...but I would check your battery cables and all engine and related grounds...