What type of vehicle is this?
did you have your ignition coil replaced? the signs are that the ignition coil is overheating thus you are able to restart after an hour, when the coil cools. also check if your ignition coil has a resistor. if it has, have it checked for continuity. did you have your ignition coil replaced? the signs are that the ignition coil is overheating thus you are able to restart after an hour, when the coil cools. also check if your ignition coil has a resistor. if it has, have it checked for continuity.
If my memory serves me right the ignition coil needs to be replaced. It has a tendency to get hot when it is not working properly.
Ignition switch?
You get a small african swallow and place its foot inside the ignition, after about five minutes turn the ignition, you'll be fine :)
ignition modual
I would suspect a failing ignition control module.
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This is a tough one as it could be a number of things related to either fuel delivery, (ie bad pump) or ignition related issues. In my case, my '98 S70 started to intermittenly stall while driving. Sometimes it would restart, other times it would not. After weeks of trying to diagnose, I had my mechanic make a 'road call' the last time it stalled & would not restart. Turned out to be the ignition module which he replaced & car is running great now
Try the fuel pump, it may need to be replaced.
On my 1996 Deville, the problem was one of the two fine wires coming off of the ignition switch that lead to the computer that reads the chip in the key had broken off. According to the dealer, this is very common. The solution is to have the ignition switch replaced. Dealer cost aprox. $400.00. I later found a locksmith that said they do them all the time for about $250.00. I was told that although the car may restart for awhile after you get that theft system warning, eventually, it will not and will have to be towed.
doubt that a t-stat would cause a car to shut down and restart when cold check for an ignition module proublem
When we have this problem, we turn the ignition off and shift into neutral, restart the engine and it can then be shifted into drive or reverse.