If the engine fan is working then you could have a defective thermostat or a blown head gasket.
The usual cause of cooling system pressure surges is a bad head gasket. The compression from the cylinders gets into the cooling system and raises the pressure. Have a mechanic run a compression test to see if there are any big pressure changes between the cylinders.
Internal pressure of the cooling system which is normally around 17 psi.
There are many reasons why a Jeep Wrangler is overheating. A leak in the radiator system will cause overheating. Too much pressure in the engine can cause overheating. A bad water pump or thermostat could cause overheating. The transmission can also cause overheating if it is leaking.
the radiator cap is a pressure regulating device if it is blocked for some reason the pressure in the cooling system could blow it off
Does the ecm control charging system on a 93 jeep wrangler and cause it not to charge the battery
High pressure in a car's cooling system might be caused by exhaust gases from normal engine combustion entering the cooling system. The exhaust gases might be entering the coolant due to a head gasket that is leaking, or perhaps even due to a cracked engine block. Note that under normal operation, cooling systems are pressurized due to the heat expansion of the coolant. However, if a fairly new radiator and/or hose has burst, or if the coolant hoses connecting to the radiator are rigid with pressure, this is abnormally high pressure.
could happen if the thermostat is not opening, or if there's a pressure leak in the cooling system, insufficient cooling fluid, or a bad water-pump, a kink in a hose or blockage in the cooling-system. Anything that keeps the coolant from flowing in and out of the block or causes a loss of pressure. It isn't enough to just have coolant in the system, the sysem has to hold a head of steam as well. Otherwise the water will just get hot and blow out of the system.
This normally indicates a head gasket failiure The water is leaking via the exhaust system A pressure check of the cooling system is advised
Low coolant? Cooling system airbound? Low coolant? Cooling system airbound?
If the cap is not holding pressure or if it is damaged, the engine will overheat. The automotive cooling system must be pressurised, WHY?? its because when you pressurise the fluid, the boiling point will increase.
No
No, but they can cause it to overheat