Question about Chrysler 300
My 2007 Chrysler 300 overheats. I have removed the Thermostat located above the water pump. I also blow are into the upper vRadiator hose and coolant was forced back out of the water pump without using much pressure so I don't think the Radiator is clogged. When the vehicle is oveheating the upper radiator hose is hot while the coolant inside the coolant filler tank is still cold. I have not located the lower radiator hose and the hose on the filler tank goes to the firewall. Is there a second valve or thermastat the maybe blocking coolant flow ??
You didn't state when it overheats, if it is while driving the fault can be : belt driving water pump slipping , lower radiator hose collapsing, most common is clogged radiator. Start the engine with the radiator cap off when it is COLD and observe the flow in side. If you see really fast flow of coolant you have the bottom portion of the radiator stopped up. The only way to know is to remove the radiator and have it flow tested.
A blown head gasket or cracked head will cause steam to come out of the exhaust, water in the oil (milky). If it is running hot while idling , check fan to see if it is turning as it should when it should. Older cars have fan clutches that go bad, newer ones have temp thermostats that go bad.
Posted on Apr 30, 2017
90's Cavaliers are notorious for problems such as these.
I hate to be the barrier of bad news, but in this case I would suggest that your engine either has a blown head gasket, and/or a warped head.
There is also the possibility that you blew a "soft plug" or cracked the block and that the coolant is leaking out through the base of the engine.
To find out of you have a blown head gasket, you can remove the oil cap from the valve cover and inspect it. If it has a yellow-brown-ish goo that is the consistency of paint, then you definitely have a blown head gasket and coolant has mixed with your oil. Meaning that you likely need an overhall.
You can also check by removing your radiator cap and checking to see if little tiny bubbles come up while the car is running. That is a sign of a compression leak, meaning that you most likely have a crack somewhere in either the cylinder head or the block.
Also, those cars have many very small radiator hoses that are in the middle of the engine and hard to see, find or replace.
In this instance, it sounds like your car has over heated more than 4 times, and once you get to that point you are likely to have fried the engine. This is because the newer engines are mostly aluminum and can't stand that much heat that often.
I would suggest seeking either a new car, or seeking a used engine to replace in your car. A used engine for those is fairly cheap compared to the price of fixing the problems that are likely to have occurred from excessive over heating.
Posted on Nov 11, 2009
the water pump and thermostat should have solved it. an air pocket can cause that but usually not to that degree.
don't get one of those cheap *** plastic impeller water pump for sissies. Get the metal impeller one. get a cool running thermostat and drill two 3/16" holes in it 180 degreess from each other. you may have installed the t-stat backwards.
Posted on Jun 20, 2010
If I understand your problem correctly if sounds as if the engine mount bolts broke which allowed the engine to drop which may have kinked your radiator hose, that caused a flow problem and the engine over heated.
If this is what you are saying it is possible the inner liner of the hose ruptured and folded in causeing a restriction in the hose, this use to be fairly common with hose's in the 50's and 60's but is pretty rare these days.
You need to check the hose for soft spots, if you do not find anything there its time for some tests, the first would be to remove the thermostat and run the engine to see if you have flow in the radiator, if your radiator has a cap at the side tank run the engine with the coolant a little low, if there is flow your will be able to see the coolant coming out of the tubes inside at the top of the core. If there is no flow you need to take a better look at the hose and possible the water pump impeller.
Posted on Nov 20, 2010
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