01 dodge grand caravan 3.8l no coolant circulation all hoses warm to the touch no heat replace water pump and tstat...flushed out no restriction...constant bubbles coming up to radiator...no over heating...just no circulation and temp stays cold...im thinking head gasket...?

Hey Rayna,,, if you are sure the coolant is not circulating..??.. Then the water pump is no longer functioning.. OR....the coolant passages have partially clogged up.. When you replaced the thermostat , you should have reversed flushed the entire coolant system, check the radiator hoses for wear (they wear out from the inside), flushed the radiator completely..... Do the complete flush and check the hoses.. refill and see how much better it does..

How hot is the engine in degrees F? With a fully warmed engine are the heater hoses, hot? Check coolant flow through the heater core. If no coolant flow through the heater or engine, I'd have to check water pump.

Sometimes when the cooling system is opened, it may get air in the system, your temp gage may be reacting to air in the system?

While it doesn't seem likely, if you've changed, or had the thermostat changed.... I'd say you got a faulty thermostat. I am curious as to what your temperature gauge says the temperature of the engine and coolant is.. If your gauge is showing hot, I can think of two more possibilities... the water pump isn't pumping right... and, if the water pump isn't working right, the problem can be a cracked head or block, which can cause an airlock in the coolant system. Check the coolant or radiator cap.

If both heater hoses are getting hot, the problem could be a stuck blend door under the dash.
If only one hose is getting hot, there is a blockage in the coolant flow somewhere.

If it is fogging your windows, you have a leaking heater core. Dash removal is required to fix it.

check this site out !! http://www.automotix.net/partshotline-do...
your heater control valve might be faulty also. have a good day !!

While engine running, does the air feel warm to hot blowing through the radiator, if it does water is circulading, if it feels cold, replace thermostat.

sounds like you have a actuator problem or the heater core may be stoped up check and make sure actuator is moving if not replace

make sure both heater core hoses are hot to touch at operating temp if both are not hot replace heater core

and of course check your coolant/antifreeze and insure it is full no water no heat

if you got heat when its running and almost nothing iddling the heater core inside the car has rectriction idle circulation not enough prestone pass thrue the radiator because of scale when our driving way more circulation more prestone go thrue ¸=more heat you need to flush the radiator inside the car normally i put a radiator flush leave it running longer then what they say go for a drive remove the heater core hose be carefull not to break the pipe use garden hose pass hose water pressure o n both side do it a few time each side flush all the prestone add new prestone you shoul have way more heat good luck p.s some shop might tell you change the heater core that perfect but very big money do it right its cheap and gonna work pierre

Sounds like a circulation problem could be the thermostat or a water pump issue, Ive had a similar problem on my Ford Taruas a couple of years ago. I replaced the thermostat and the problem was still there,so I replaced my water pump later. During my inspection of the old pump after removal I had noticed a few of the fins on the internal part of the pump were missing. This probably didnt allow the pump to circulate the coolant fast enough through the system. After replacing the pump and thermostat my problem went away, I hope this helps.

George.