Engine Overheating?

Hi,

Overheating can be caused by a few different things. First, I noted that you replaced the thermostat. Was the system flushed when you had the coolant removed? If not, that would be the next step. Here is a link that shows how that is done:

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

Also, if you are trying to add coolant and it won't take any, it may simply be full. When the engine is cold, open the radiator cap and check level. If it is full, start the engine and see if it drops. If it does, and it then. Make sure the overflow reservoir is at a proper level as well.

After it is filled and the cap is still off, allow the engine to warm up for two reasons. First, confirm that the level doesn't drop any further and second when it hits operating temp, you should be able to see the coolant flowing through the radiator. Note that when you fill the radiator, make sure the heater is on high to ensure the heater core is full as well. If there is no heat, then either the core is plugged, there is air in the system, or there is no circulation of coolant.

To answer a specific question you asked, the pump does not need to make noise to be bad. It can, but often times it will develop a leak through what is called a weep hole. See pic 1

Here is a link that you may find of interest and helpful. It discusses common symptoms of a bad water pump.

https://www.2carpros.com/articles/symptoms-of-a-bad-water-pump

One last thought. If everything above shows normal, then we need to check if there is an issue with a head gasket. Take a look through this link. It explains how to determine if that is the issue.

https://www.2carpros.com/articles/head-gasket-blown-test

Here is something I want you to try as well. With the engine cold, remove the radiator cap and start the engine. Does coolant shot from the radiator or leak out rapidly? If it does, then we have compressed air entering the cooling system most likely the result of a bad head gasket.

https://www.2carpros.com/articles/engine-overheating-or-running-hot

Let me know what you find or if you have other questions.

Take care,
Joe

Hi:
Does the engine overheat at highway speed? Also, make sure the belt hasn't come off the AC.

Let me know.
Joe

Hi:
The temp sensor sends a signal to the computer and the fan relay which inturn starts the fan. Have you check the relay or temp sensor?

You need to have the head gasket checked. Either with a block test or exhaust gas analyzer. Befor the coolant backs up do the block test or have a gas analyzer sniff the coolant befor the back up.

Exhaust gas can be getting in to the coolant. The gas analyzer will check this

If there's a leak on the heater core the engine will overheat its losing coolant. You sure its not a clogged-up AC drain tube

There were two tubes connected, one actually said heater on it and i'm not to sure what the other one

The 2 heater hose goes to the heater core in and out-the coolant has to go back to the engine. As for the AC drain tube dunno where it is-

First, all of those things don't go bad at the same time. As far as the price, it's not bad. But does it need everything? Is the water pump leaking? I want to explaine something. First, if you replace the water pump on this engine, it is a good idea to replace the timing belt too, so I can understand where he is coming from there. However, if there is no leak from the pump and it isn't making noise, chances are it is fine. He can't see through the aluminum housing to determine if that is the problem. The radiator, on the other hand, may need replaced or may just need flushed. It could also be a 5 dollar thermostat that has gone bad.

Has he been able to justify why everything needs replaced? Was the radiator leaking? Was the waterpump leaking or making noise?

Let me know.

Joe

If it stills overheating with all that replacement stuffs/checks-time to block and pressure test it-could be a blown headgasket, cracked head or block, and intake

You can get the block and cooling system pressure tester at the major parts store and DIY