[Ron61]

That could be a hard one to really pin down. But you are pulling harder between 1st and 2nd than when you are running at high speed. If it were heat related I wouldn't think it would have happened after setting that long in the restaurant parking lot. Having went through a somewhat similar problem a few years ago and spending a couple of months trying to track it down, I found that my problem was fuel related except the car would completely shut then engine of and then it would start right back up and run well for a long time before it would do it again. Then one day by accident while the car was up on the rack down at my friends garage and it was just idling, it shut off and we noticed that a short, about 6", piece of rubber fuel line which we had already taken off and checked twice seemed to move. It would some times just suck completely closed. We replaced it and then cut the old one open and it looked great and there was no soft spots in it before we cut it open. But I have never since had a single problem like that. I would be more likely to suspect that yours has to do with the electric system as it only happens when you are under heavy load at that 1/2 shift. Hope that you find it son as something like that can be really annoying and frustrating.

Ron