Engine overheating while I drive?

I been having this overheating problem for about two or three days know I placed a thermostat and a heat senor and it ran good for about two or three days. But then all of a sudden the same problem started to happen again. But know it seem as the problem is getting worst. Know when I pull out the fans are on high when the engine is already cool. But it dont seem to cut on when the water starts to boil out of the coolant bottle.

When my car over heated. I had someone (non-mechanic) replace the water pump. So of course that did not resolve the problem. I let a mechanic check it out and he said my lower intake gasket needed to be replaced. While that was being replaced he also changed my spark plugs, placed in a new thermostat, sensory and changed the oil. After driving less than 5 miles, my car started to over heat. I returned it and the mechanic lift the hood and my engine was not overheating at all he plugged something to it and it showed the temp. Was indeed normal, but for some reason the gauge was all the way up to hot and would shut the car off. So even though my engine was not over heating what could cause the gauge to show that it's overheating when it's not. I drove my car back home (after it cooled down) but I'm puzzled. I'm suppose to return it tomorrow, but I just wanted an idea on what could they check next.

Engine Cooling problem
2000 Chevy Malibu 6 cyl Front Wheel Drive Automatic

My car overheats, and I already replaced the water pump, thermostat, and the gaskets. What else could it be? The radiator? And how would I know?

You may have fixed the original problem being one of the leaks or a sticking thermostat. But due to them leaking and overheating a few times you mey have warpped the cylinder heads or blew out one of those gaskets.

One way to tell is to watch the coolant overflow bottle while the engine is running and see if bubbles are coming up before it starts to overheat. Also you may have a problem with lack of heat in the car if the system is getting air forced into the system due to a bad head gasket.

Let me know what you see with them

Engine Cooling problem
2000 Chevy Malibu 6 cyl 189000 miles

My car recently overheated and the engine had to be replaced due to some blown head gaskets, well the car is still overheating after the engine, water pump, thermostat replacement and a radiator flush. What could be the problem?

2000 Chevy Malibu 6 cyl Four Wheel Drive Automatic

Chevy malibu 2000, almost overheating

My Malibu had an overheating problem and had a replaced engine because of the issue. About 2 months later the head gasket went out because the newly replaced water pump failed. I have been through 3 water pumps in 3 months and 2 thermostats. The "new" engine has roughly 70k miles on it with a now replaced head gasket also. I lose about a liter of water from the reservoir every 150-200 miles and keep refilling water. Right before the water pump goes out or it over heats I get a coolant smell inside the vehicle and the temp slowly climbs. Opening the cap on the reservoir shows to be steam coming from the reservoir usually with little to no water left. After I refill the reservoir while the engine is still warm I try to hand pump water from the reservoir to the radiator by squeezing the tubing from the radiator to the engine block, but no water comes through. This problem has proved lots of money in repairs for me and an answer or a lead would be greatly appreciated!

I checked and the radiator fan does not come on even when the temperature starts to climb. This weekend we plan on replacing the thermostat to see if that is the problem with the fan and then flushing the radiator and checking for plugs. When I ran it this morning again to check the radiator fan wanst running and I still lost most of the water in the system, but I couldnt see where it was coming from, just a few drops falling out by the right front tire. Any more suggestions would be awesome, and thank you for the first post!

There is no wetness on the hose below the radiator, the outside of the crankcase seems to be wet, but not dripping water, there is no signs of water in the oil, and the heat is now working so its not the thermostat. If you would be interested in calling me we are working on it right now and my number is 715-965-1378. Thank you.

Engine Cooling problem
2000 Chevy Malibu 6 cyl Front Wheel Drive Automatic

the car is over heating /when I disconnect the wire connector on the temperture sensor on the neck of the termostat the fans startup super fast and dont stop untill put back the connector