Over heating... Any other ideas?

[Spectre23]

So my car started to over heat on the freeway one day. When it starts to overheat, the heater quits working and both hoses to/from the radiator are hot and the radiator itself is not hot.

We replaced the thermostat and water pump and it still overheated. We replaced the head gasket and radiator cap. Still over heats. Checked the crank fan and it seems fine. I have a new radiator I have not tried yet. But just with a hose to it, this radiator seems to flow fine.

Anyone have any other ideas?

[c-rad]

There is a blockage somewhere in your system.

[float_6969]

I'm with Chris on this one. You might try some sort of system flush.

[fitch9014]

did you bleed the system after you changed the water pump, thermostat, etc. and then refilled it? you may have a big bubble of compressed air in there. when i changed the waterpump on my old ka, i had the same problem.

[boost_boy]

So my car started to over heat on the freeway one day. When it starts to overheat, the heater quits working and both hoses to/from the radiator are hot and the radiator itself is not hot.

We replaced the thermostat and water pump and it still overheated. We replaced the head gasket and radiator cap. Still over heats. Checked the crank fan and it seems fine. I have a new radiator I have not tried yet. But just with a hose to it, this radiator seems to flow fine.

Anyone have any other ideas?

Sometimes the new thermostat is faulty as well. I know this because it has happened to me on more than one episode with different cars from different manufacturers. Sometimes your radiator is the culprit, so if you have a new radiator, go ahead and give it a swing if you can verify that all other components are functioning that can cause over-heating issues. Also, check and see if your headgasket is letting coolant out. And lastly, if you overboosted the engine on an outting or two, you could easily mess-up a piston or even the headgasket. Hope this advice helps a bit and good luck.

Dee