Car keeps overheating?

When the radiator and water pump were replaced, was the system "burped"? If there is air trapped inside the system then the engine will overheat. Research how to get the air out and do it. Minimal tools are required for this. Also, make sure the fans are working. When the gauge reaches operating temperature, open the hood (bonnet) and see if the fans turn on.

I just did a web search and it says bad head gaskets contribute to cars overheating. I know I've had cars where the electric fan DIDN'T work and when I got up to 60 MPH the inflowing air kept the engine cool enough to drive. You have two radiators up front, one for the transmission coolant and one for the engine coolant. From what you describe air isn't getting to the radiator and I would make sure both of those radiators are clean. I've also heard that air inside a system will cause a car to overheat, although I never bleed mine out, I don't recognize that problem. I've listed a couple serious problems here, like the head gasket. real money

PS-I just bought a new obdII sensor and it has a section on it that deals with water temp. It follows the water as it heats up. If you have want you can plug it in and see all kinds of things that are going on, on your engine/

Your engine is cooled by two different methods depending on whether your moving down the highway (road wind) or sitting stopped in traffic (radiator fan). So first specify whether it overheats while driving down the road at say 60 mph (look at the dash temperature gauge) or only overheats when you come to a full stop and are sitting in traffic or parked with the engine idling. Of course it could be overheating under both conditions in which case maybe the radiator needs replacing if it's over 10 years old.

Are fans running also you don't mention thermostat. I assume your car has one it's the thing that opens and Alloa thru flow of coolant when the engine reached effective temperature. Sure even us car should have one but if it fails the coolant in the block never circulates through the radiator. Good to test by starting car leave running in the yard you should hear few things. After ten TI twenty mins or so. The fans will cut in and the radiator will start to heat ad the engine coolant circulates after the thermo opens. Usually sited near pump in the block on uk cars if the rad never heats up bit the block and to gauge show it over heating think that's the clue. Good luck

If you're driving for 30-45 minutes before it starts overheating, you can disregard any advice about changine the thermostat. They hardly ever go bad, and when they do, the engine won't run for 10 minutes before it starts overheating.

I have to wonder who is making the diagnosis that led you to change all those parts. Whoever did it, find someone else.

If you ever have to add coolant, you have a leak somewhere, internal or external.

Only advice I can give is to go to a radiator shop that knows what they are doing and stop throwing money and parts at a misdiagnosed problem.

did you replace the thermostat and did you flush out the cooling system ! the antifreeze has to circulate so it won,t overheat ! the plugs has nothing to do with the overheating ! how is the radiator cap ? if it,s losing pressure then it can overheat !

Bad thermostat,dirty radiator,cooling fans not coming on start with the thermostat even if it is or was new,they can be bad out of the box and make sure all the air is out of the system,a air pocket can make it run hot.

Spark plugs don't "tell us if it's overheating"! What we have here is a bunch of BS and a couple of girls that don't have a clue WTF they are doing! For $3000 you probably could have replaced what ever the hell you drive.

thermostat is probably shot.

most major auto parts store will diagnose minor problems like that for FREE, before you buy parts that you don't need or start tearing things apart. you just have to get it to the parts store.

they don't make house calls.