Best Answer

It could be that your radiator is rusted or damaged and need to be changed. Have it checked and flushed out to be sure. Another problem could be your cooling fan is not working properly, it should come on when the engine gets to a certain temperature. If it doesn't then check the connections and have it tested to see if there is a problem. These are the first things that should be checked out and also make sure none of the hoses are collaped or clogged. If you can feel the hoses getting warm after the engine has reached the proper temperature then water is flowing through them, you must check all the hoses even the heater hoses. These are usually the main reasons for overheating. But beware that there are other things that can cause it to overheat that has nothing to do with the cooling system. Good luck and I hope you find the problem. Jean

Answerthis can be caused by an old/defective radiator cap. i would replace it.

answer replace radiator cap would be my next move then if that doesnt fix problem check that engine timing is correct

User Avatar

Wiki User

โˆ™ 2011-09-13 15:36:21
This answer is:
User Avatar

Add your answer:

Earn +5 pts
Q: Why is the engine still overheating after you have replaced the water pump heater core and thermostat?
Write your answer...

Related Questions

Breeze no heat and overheating what causes this?

No heat coming from the heater and the car overheating is usually the thermostat stuck closed. The thermostat is supposed to open up at a certain temperature allowing the engine to warm up quickly.

How do you know if your thermostat is shot?

If the engine is overheating, the thermostat is stuck closed. If the heater is not putting out enough hot air the thermostat is stuck open. Change the thermostat as a normal part of maintenance when changing coolant.

How do you know when to replace the thermostat?

Two good indicators of when to replace the car's thermostat: * When you have to run the heater (no matter what time of the year) in order to keep the engine coolant from overheating, * When you no longer get ANY heat from the heater core.

Why the electrical thermostat of a electrical heater can be damaged?

By overheating which will cause a change in the thermostat materials construction.

How do you know if your thermostat is bad?

If your engine is overheating and has no obvious leaks then suspect the thermostat. Of course you can remove it and check it, but the best thing to do is just replace it if it is suspect. It should be replaced every time you service the cooling system. when you turn your heater on the it wont blow hot air

Motor heats up no heat out of the heater not overheating?

Perhaps a bad thermostat and/or a heater core

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.

You have 1990 Ford Aerostar 30L is overheating we had the thermostat replaced recently and it was working fine for a day now it is overheating again Also the heater is not producing any hot air?

Thermostat could be at the tempure setiting, No antiboil antifreeze coolant, and the water leakage or a bad waterpump.

Why would my 94 trans am be overheating we have replaced heater core new rad cap therm twice and was told no blown headgasket what else could it be?

try your thermostat

Signs of a bad thermostat?

Thermostat stuck closed, engine overheating, temp gauge running very hot. Thermostat stuck open, little or no heat from heater, temp gauge not moving much off of cold mark.

Where is the heater core temperature thermostat?

The temperature of the coolant entering the heater core is controlled by the engine thermostat. The engine coolant thermostat is generally located at the engine end of the upper radiator hose.

Well having no thermostat blow my engine?

It won't 'blow' your engine to run it without a thermostat. However, it could accelerate wear on the engine over the long term. Also, fuel economy and heater performance will generally deteriorate. Simply put, engines are designed to be run at a certain temperature. For this reason, it is always best to run an engine with the proper thermostat. If your engine is overheating, then the cause of the overheating should be found and addressed rather than trying a band-aid fix such as removing the thermostat.

Why no heat in cab of f350 diesel?

no heat can be caused by,blocked heater core insufficient coolant in engine blocked heater hoses from engine to heater core bad heater thermostat bad thermostat in engine bad heater control switch

Why is your car indicating that the engine is overheating?

If the engine is overheating, it is most likely one of three things: 1. It could be that the coolant pump is not working 2. There may be a leak or obstruction somewhere in the radiator, heater core, engine coolant channels, or one of the various tubes connecting them 3. after a while, the thermostat that controls the flow of coolant to the engine may give out and need to be replaced. This is the least costly repair to make and should be checked fore first.

Why is your 97 blazer overheating?

Could be a number of reasons. Lack of coolant, clogged heater core, bent radiator fins, bad thermostat, non-functioning engine fan.

Does a bad heater core make cars overheat?

Yes it can cause it to overheat but first check your thermostat. That would be the 1st cheapist thing to do before you did anything else. I got an 85 regal(overheating) and the thermostat or the heater core is the problem im getting them both replaced tomorrow and will let know of how it runs.

What is the cause of a 98 Ford Windstar overheating but heater only blows cold air?

thermostat stuck

If you bypass heater core will engine stop overheating?

no , the heater core provides heat to the interior for the passengers

If you have replaced the water pump thermostat and heater core and ran water through the radiator but it is still overheating Should you have the radiator pressure tested?

If you have replaced the water pump then flush the radiator with CLR also check to see if the fan is working properly.

How do you know if the thermostat in your 1997 dodge neon needs replaced?

Overheating or no heat from the heater are sure signs it is bad. You car is 12 years old, just replace it if you have a suspicion it is bad. You can test the thermostat but why bother? You will have to remove it to perform the test. Just replace it.

My heater will blow but not hot ive replaced the thermostat?

Check into the temperature control valve--this is different than the thermostat.

Why would your 96 accord be overheating when its full of fluid and you replaced the thermostat and the temperature gauge doesnt go past a quarter and you smell antifreeze under the hood?

It could be that your heater core is blocked or damaged somehow.

Your golf 4 is overheating and you changed the thermostat could the water pump need replaced?

It is very common for the impeller of a VW to break apart. The result is engine overheating and no heat. Usually, the the radiator remains full unless severe overheating causes a boilover and consequent loss of coolant. Also expect that the engine becomes hot yet radiator and heater hoses remain cool. If this happens, replace the water pump. It is usually convenient to replace the timing belt at this time.

Why is one heater hose warm and the other one cold?

your thermostat is not opening and needs replaced before the engine overheats and damages the cylinder head/s

How do you know if a thermostat in a 2001 Hyundai elantra needs to be replaced?

Engine will overheat or not get warm enough. As in the heater will only put out warm air. When you suspect that the thermostat may be defective, just replace it. Very inexpensive part.Engine will overheat or not get warm enough. As in the heater will only put out warm air. When you suspect that the thermostat may be defective, just replace it. Very inexpensive part.