I have a 87" YJ Wrangler, and I am having some problems. I will be driving down the road and I will lose all power. Everything just cuts completely off. Happens at 10 mph and 60 mph, any RPM. I have to pop the clutch and get it restarted......Any ideas, the mechanic I took it to couldnt fiigure it out, doesnt say much for him.....any suggestions. Appreciate any advise.