I have a Isuzu trooper that is over heating but the thermostat opens and the radiator is new the wearer pump us new and thermostat is new there is on bubbles in the radiator and all hoses are hot and it over heats with no thermostat in as well?? Help

there are up to 25+ symptoms
of engine overheat.
flushing only works on toilets.
My guess, is it's leaking coolant somewhere.
There should be no pressure next morning.

Cold water does not build pressure.
but if the vacuum breaker in the cap fails
this can cause vacuum pressure, that sounds like
air pressure. but is not. Reverse
Does engine run ok.
have full power,
no pinging
no water leaks.
if it leaks say where exactly.
locations matter,
1: steam blasting in to side, expansion tank running?
2: steam from tail pipe end.?

here are 27 symptoms or causes.

http://jeepdied.com/overheated/overheated%20101.html



same on all water cooled engine,s this.
the top fail is bad thermostat , they live about 7 years, says the top makers.
the next is leaks,
then bad RAD CAP,
cooling fan dead? and more.
running water only not Antifreeze 50%

Hi ytabaja97,
Sounds like the thermostat on the hose that goes to the top of the motor is stuck closed, or does not open completely. Try replacing the thermostat. Make sure it is correct for your Jeep, and that the seals on the thermostat housing are replaced correctly.
Hope you have no more overheating problems.

You have a water leak from the sound of it or water is draining from over heating. Things to check for, leaks at the hose connections, leaks at heater connections on engine, leaks at water pump and any leaks at head gasket. Assuming there are no leaks check or replace or adjust your water pump belt. Take the thermostat out and run the engine without out it. If the problem is solved replace the thermostat recommended for you car. You can also have it checked as well.

ouch. leaking fluid and no signs of leak. check engine oil. if it appears milky, you are leaking into the cylinders. this means you'll need a new head gasket.

The heater core being clogged would affect whether the interior gets hot air when set to hot temperature.

The heater core is like a very small radiator that wouldn't affect the temperature of the engine very much.

May I ask how hot it gets? Engines can get to 220 deg. F or 230 deg. F and still be considered to be running in a normal temperature range.

make sure ur fan clutch is puling some air and replace rad cap with new onr u may have to replace radiator long trips not getting enough water cooled

THE WATERPUMP GASKET TO THE BLOCK

If there is no liquid in your oil, or you oil doesn't look white and mucky on your dipstick, you need to replace your radiator. If your oil is white and mucky on the dipstick, you have bad head gaskets.

there is a sending unit for the guage.but if it has been running a few minutes and gets hot you may need to check the thermostat or water pump.check the water pump by taking the radiator cap off.then start the vehicle,look into the radiator and see if any coolant is flowing or circulating.do the cheapest fix first

From your question I think that you are having over heat problems. Thermostat is only part of the system that will cause this. You also have to check that your radiator is flowing and not clogged up. Also a bad fan clutch and bad water pump can cause it to run hot.