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Yes - if thermostat does not open allowing coolant flow The simple answer is yes. They can either fail open (engine never heats up or heats up slowly and temp fluctuates) or, more normally, closed (engine overheats). But before you condemn it completely, make sure the engine is cold, remove and inspect the 'stat for obvious signs of damage then place it carefully into a pan of near boiling water. After a few seconds a gap should appear between the centre an the outside rim. New stats are relatively cheap but it is essential when replacing that a good seal of the cooling system is made. To stop vapourisation and to keep the temperature down cooling systems work under pressure. It is worth checking for minor leaks / weeps and the proper action of the radiator / expansion bottle / filler cap. You don't say which vehicle it is but they all use smilar principles.
What else can I help you with?
Why would a 1992 Chevrolet Cavalier overheat when the radiator fan motor water pump thermostat and heatercore have been replaced and the system has been flushed?
It could be a head gasket or cracked head. With the engine cold, take the radiator cap off and crank the engine. If the head gasket is bad coolant should shoot out of the radiator. 12 inches to possibly hitting the hood.
Why does 2000 jeep run hot at idle?
A lack of water in your cooling system will cause your 2002 Pontiac Sunfire to overheat. A malfunctioning thermostat can also cause it to overheat.
Why is fan running all the time on 2003 Jeep Cherokee Laredo?
Maybe because there's no such car? The last year for the Cherokee was 2001. I had the same problem on my 2003 jeep grand cherokee. One reason it will stay on is after you wash it or a good amount of water gets in the engine. If it is below freezing the water freezes in the radiator causing the fan to continuously run
2000 Jeep Grand Cherokee getting hot replaced the thermostate and it is still getting hot what should you do at this point?
flush your cooling system, you may have blockage in your radiator not allowing the water too cool, but if the radiator is that plugged up its probably no good. look at the radiator to see if there is any corosion or small leaks in the little fins in the middle, i have had a few that were plugged so bad that when i flushed the radiator it leaked. if that does not work it could be the water pump. ive also had a plugged heater core, and extreme amount of rust, from poor coolant system management, plugging off water ports in the engine and in the head gasket on the engine.
What would cause a 1994 Toyota SR5 to overheat only while driving over 60 MPH?
Radiator in need of cleaning or bad/stuck thermostat maybe. Check the fan clutch to make sure it is operative. The fan clutch doesn't engage until a certain temperature is reached; otherwise it is free-wheeling. It needs to engage in order to cool the radiator.
Will low oil cause the car to overheat?
No low oil will not cause your car to overheat. But there is a couple other things that can cause your car to over heat, like a bad thermostate that's located in the block of the engine or can be the water pump not cycling the water into the engine. Hope this helps
Can a bad radiator cap make an engine overheat?
It can be a significant contributing cause, especially if it's bad enough to keep the system from pressurizing.
Can you blow engine from bad water pump?
If you allow the engine to overheat severally, yes.
Will a bad thermostat make your car overheat?
yes
What causes overheating in a Toyota?
A bad water pump or thermostat can cause an engine to overheat. A plugged (clogged) radiator or heater core may also cause an engine to overheat.
Why would a 1987 Buick Regal Limited 3.8 overheat after replacing the water pump?
The thermostate could be bad or a air pocket somewhere in the cooling system wont let the coolant circulate properly,
Can bad brakes cause your car to overheat?
No completely separate from engine/cooling system
Will bad ballast resistor on a 1978 D100 make engine die?
Yes it can. If there is a bad wire in your harness the ballast resistor will get hot, in which causes your coil to overheat and cut out or burn outline.
Will a bad freeze plug prevent car from starting?
A bad freeze plug will leak coolant and cause the engine to overheat.
Can a bad catalytic converter make my car overheat?
Not likely but possible.
If the engine cooling fan on a 1995 camaro is broken does the car overheat?
yes. but there are several other things that can cause it to overheat. not enough coolant, bad belt, radiator blocked, bad thermostat,bad water pump to name a few.
What are signs of a bad thermostate?
Over heating and no heat from the heater.
