do a compression check and do a radiator dye test

 

thanx g ima look into that

 

What is in the radiator? 50/50 mix or pure concentrate? It will run hot with concentrate in it.

 

If I understand:

• New radiator
• New radiator cap
• New Thermostat

Guessing these new parts were installed to CURE overheating problem you were already having?

First - is the cooling system full? Sometimes they need to be "burped" to get any air out.
I've had almost new thermostats fail for no reason whatsoever, could be bad, out of the box.
If thermostat is easy to get to, you can check basic operation (open, close) in boiling water on the stove.
If you have right kind of cooking thermometer, you can check for open/close at correct temperature
When does the car overheat, in traffic, or at speed?
You noted that the fans turn on, but do they stay on?
You might try bypassing the switch that controls them - so that they stay on indefinitely - and see what happens.
If none of these, I'd think water pump, but first, have someone check for combustion gases in coolant - that would indicate a bad head gasket.
Good Luck

 

Begin with cooling system bleeding procedure, or you could spend more money for nothing. It must be bled to operate properly without air pockets.

 

Engine type? Miles on the car?
How do you know it is overheating, is it losing coolant/boiling over or are you only seeing high temp on the gauge?
I suggest getting a pressure check done on the system, if it is not building pressure, you still could have an internal leak (intake manifold or head gasket where antifreeze flows out but no oil gets in)...good luck, keep us posted

 

I wouldn't go replacing things, unless I knew they were broken. I had some overheating that was caused by a loss of coolant at the thermostat (both an external leakage, brought about by the loosening of of the bolts as a result of a leaking valve cover, and an internal thermostat rubber gasket failure that caused it to not operate properly. The overheating was not excessive, the temperature gauge needle was simply higher than normal, and more importantly, twice on very hot days (100F+) and rush hour traffic, I noticed pink residue on top of the engine which could only have been expelled from the reservoir, which was dropping in volume despite me topping it off. I replaced the valve cover gasket, since I believed the oil leaking from there is what caused the thermostat bolts to loosen, degreased the thermostat housing and bolts, topped off the coolant, burped the system using one of those specialized funnels that make it an easy one person job, and the problem was solved. At the time I think I had about 150K on a 4 cyl '05 Camry. All was very easy and satisfying to fix.

 

Coolant Bleeding Procedure

• Get a coolant funnel
• Attach funnel to radiator
• Fill funnel til half-full
• Temperature controls OFF
• Start vehicle in PARK
• Add coolant as needed
• Wait
• Add coolant as needed
• Wait
• Place an object on the accelerator and let it rev up til 2000 RPM to give the engine some load
• Add coolant as needed
• Wait
• Add coolant as needed
• Wait
• Add coolant as needed
• Wait til radiator fan turns on
• Remove object from accelerator pedal
• Wait longer til radiator fan turns on
• Wait longer
• Done!
• Wait longer
• Done!