After running the car for about an hour and after shutting the engine off, it won't start until after it has cooled off for an hour or two. I have checked the bat. and starter connections. I am thinking the selinoid ?
I am assuming it will not turn over if that is the case then it is the selinoid. You can check this by taking a pair of plyers and touching it to both of the large bolts coming out of the selinoid, One has the battery cable and the other has a metal bracket that runs in to the starter. if you touch them with both metal tips of the plyers the starter should engage and turn the enging over if it does not check to see if you are getting power to it. This vehicle has a funny looking fuse in the power distribution center located under the hood behind the battery. That fuse is a "slow blow" fuse and will act up from time to time and cause, at best, odd problems.
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Well of course not. When you shut the car down, all water circulation stops so engine heat goes way up. This means the radiator gets hot too, and therefore so does the AC condensor. It takes time for all these things to cool back down when you start it back up.
Sounds like the windshield wiper motor is getting too hot. The wait an hour is waiting for that to cool down.
The wiper motor is located usually under the hood, on the firewall on the passenger side.
You should be able to feel the wiper motor getting too hot when the wipers are turned on.
Hope this helps.
Sounds as if the ignition control module is getting hot and not allowing it to restart. Had the same issue with a Dodge b-250 van, except for the plowing part. It would run for about an hour and start sputtering and shut off. After it cooled down, van would start and run great for the same length of time and do it again.
To clarify, you said it runs for 20 min then quits, and it won't start again until it cools off. Have you checked for spark at the plugs and fuel pressure right after it quits running ? These models have an ignition module attached to the side of the distributor that has a history of failing when hot. The coil and the pickup inside the distributor can fail too. Could also be a relay.
I don't think there is a heat shield on the starter but, I wouldn't think that would be you're problem. I would try changing the ignition module. It's on the engine block, drivers side, I think. Usually when they are going bad they will shut off engine when they get hot. It won't crank until it cools off. After it cools engine will crank and run good until it gets hot again. Good Luck.
I am thinking that perhaps the temperature sensor is reading wrong and therefore sending a message to the computer that the car is running too hot. This can happen, my VW presently reads 20 hotter on the guage than a heat gun records at the temp sensor location on the head. If you have access to a heat gun it might be a good idea to check out the actual temperature, but it probably won't hurt to change the sensor.
The other problem that occurs to me is the oil sending sensor. While a temperature sensor won't shut an engine down, the oil sender can. If it is reading a large drop in oil pressure it will shut the engine off. Since oil gets thinner as it gets hot, perhaps a defective sending unit is reading it as too low. Once the oil cools off, it would restart until the temperature gets too high again. I would think that upgrading to a heavier oil might cure the problem. I don't know what you are currently usung but certainly you could go to 10W30 or 10W40 without too much trouble, at least for a test. Hope this helps.
sometimes when an engine gets hot enough it will stop running due to the metal expansion when it is hot.if it cools off it will probably start but don`t run it very long especially without coolant.the thermostat may have seized in the closed position this sometimes happens as when the car is running the temperature flucuates the stat will close and open all the time(won`t close completely).another problem could be a bad head gasket that allowed coolant into the combustion chamber enough that the motor went into what is called hydraulic lock,coolant has filled the combustion chamber enough that the piston won`t move through out its normal travel.i would try changing the thermostat first refill cooling system and let run until the cooling fans have cycled on and off.if it doesn`t overheat and it cranks over when you try to start it then the stat is more than likely the problem.
you say the engine shuts down when it gets hot if it runs rough before doing so it could be the coolant temperature sensor allowing the engine to overfuel if the engine cuts out in a couple of seconds but sounds smooth it could be the fuel pump , if it cuts out instantly its