Having an annoying problem with my 85 GL. First occurred about 3 months ago while traveling on the highway. The engine died (tach dropped to zero), but kicked back in within a couple seconds. Didn't happen again for about a month, but when it did the cut out lasted a few more seconds.  Over the last couple of months the frequency of this phenomenon has increased to where I can expect it to occur at least once or more a day. It seems totally random. It happens while idling at a stop light, at freeway speeds, or driving in town. The engine runs very well before and after this happens. Any helpful hints would be greatly appreciated.

Thanks
Curtis Graham
Orem Utah