dkwkid wrote:When you put a load on an engine the by product is heat. Many things decide how much heat the cooling system can dissapate. Different motors require certain temps to run correctly. Running an engine without a thermostat will not in many cases allow optimum fuel atomization for proper operation. in addition, running a lower rated thermostat will not prevent overheating if the load exceeds the capacity of the cooling system.That is why modern vehicles run 195 thermostats for economy and fuel efficiency as well as aluminum core radiators to dissapate heat. If you are seeing the temp climb pull over and run it in neutral at a high idle for a bit until it cools off. I would have dropped into 2nd, slowed down until it went normal again-this will get the coolant flowing faster as well as taking the load off of the engine.
Are we ready for an engine overhaul yet? Why turn something quite simple into a drama which suits your hypothesis?Ben Dover wrote:"After boil" is also an indication of a faulty pressure cap or thermostat with to high an operating temperature.
Ben Dover wrote:Since when have all Jeeps had to slow down on a drive from point A to point B while driving a Jeep in order to cool down? Remember, the MB/GPW was designed with a heavy duty cooling system designed to operate in year round in all climates.
Best place to start is to check the temperature rating of the thermostat that is installed. Right now that is an unknown. It might just be a thermostat rated 180F or greater. The thermostat controls the operating temperature. My MB has an OEM 160F Bellows thermostat, the operating temperature is a steady 160F year round even during 90F summer days. Remember, a thermostat insures quick warmup and prevents overcooling and overheating by automatically controlling coolant flow from the engine to the radiator. It is necessary in order to ensure the operating temperature is uniform thruout the engine block. The OEM thermostat in the MB was fully open @ 170F.
Hopefully the issue is simply the thermostat or even a loose fan belt.
There are other contributing factors, but they are more remote such as timing, faulty pressure cap, restricted exhaust system, etc.
If you can, post a pic of your thermostat.
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