Question about Cars & Trucks
I have a 06 Dodge Caravan that starts to overheat when the AC is on. when i turn it off and put the heater on it returns to normal. It does not always do this but over the past month it has happened about 4 times. What could be causing this?
Have pressure test done on the cooling system and check for partial blockage in the radiator cores.
Posted on May 05, 2013
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Posted on Jan 02, 2017
The only thing i could figure it was after checking the "easy" things was the head gasket. tore it down this morning and sure enough that was the problem. now that i have it a part i am going to do a complete rebuild on it, then it will last me for a while longer and i won't have to worry to much about it.
Posted on Sep 10, 2008
Did you bleed the cooling system after refilling the radiator ? to bleed the system, fill the radiator with water and coolant. Run the engine until it is at a good temperature. Then turn off the engine and look for a bleeding screw at the oulet of the thermostat housing and turn it with a screwdriver counterclock wise. The trapped air will go out and coolant will start coming out. refill the radiator and repeat until only coolant comes out and no air.be careful not to burn yourself.
Posted on Feb 16, 2009
air pockets in the cooling system can cause this problem. idle engine with radiator cap removed for 10 -15 min. Do not let engine overheat and make sure coolant lvl is topped off. this should bleed all air from system.
Posted on Nov 07, 2009
Where is it leaking from? The radiator its self, the heater core found under the dash, or some where in between? Look for pools of coolant under the front floor mats, If you find it there, then the heater core needs to be replaced. Next time it happens, Pull over immediately and look under the car to see where it is leaking, (look from more than one angle). Or park it over some clean cardboard, where ever the stains are, will give you a clue of where to look for the problem. And most easy, Bring it back to the mechanic who installed the new radiator., Most legitimate mechanics warrant their work and yours may be responsible in some way, or at least be familiar with your particular Caravan.
The solution is to locate and fix the leak, but also perform a thouro cooling system flush. The system bay have serious dirt, clay, or corrosion that is causing issues with proper flow and pressure, thus causing leaks.
And Always Pull Over when it begins to OverHeat! Heat damage to an engine can spell Death to any Car, even Caravans. Good Luck.
Posted on Jan 04, 2010
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