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have a pressure test done on the cooling system to check for leaks
If the radiator cap is on the plastic reservoir ( ford) , the reservoir has a habit of cracking underneath and under pressure will open and let the water out
have a compression test done to confirm the integrity of the head and head gasket
check that the cooling fan is operational ( electronic control) or replace the viscous fan hub if on the water pump shaft
Hello, The pressure relief valve is your radiator cap. You have a 2003 Chrysler and two day is 2011, that mean this upper radiator hose has been in service for 8 years now. Most likely the upper radiator hose valid. Sir/Mama, it time for replacement of all hoses and belts. Have the vehicle coolant system flushed and new 50/50 anti-freeze and water installed. Also, maybe a new radiator cap wouldn't hurt either. GB...stewbison
did the diag test consist of pressure checking the radiator system for minimun 15 minutes to see if the pressure dropped even slight 1/2 lb psi?...did they pressure check your radiator cap to insure that it holds its pressure as well? did they check your fan to insure that is works? i"ll bet you they didnt, because theres now way that you can lose coolant that quickly without there being some kind of system leak ...being external (hoses/heater core), or internal..(timing chain freeze plug, or engine block freeze plugs or leaking head gasket/intake gaskets! you have a "very" serious problem that will lead to major repairs if not fixed quickly. Have a "block check" done on your car..this consist of a blue dye chemical which when mixed with a sample of your cars coolant will cause it to turn yellowish if it detects exhaust gases in you system..did you have your thermostat replaced?..i assume you did because you would never replace a radiator and cap without installing the most important piece in the coolant system! if your car uses Dex-cool anti freeze then im sorry to say that it might be too late! check my tips and tricks on "unexpected coolant loss"! just click on the number next across from this and it will open up my tips! good luck. let me know what you find out! thanks!
No heat is probably a result of low coolant, which basically starves heater core when necessary to feed rest of engine when coolant too low, or an airlock. I really think it's time you took it to a rad shop or similar & had a pressure test done on system & a proper diagnosis. Delaying it will only cost you more, like a whole new engine.
Cracked head or head gasket will cause antifreeze to get in the combustion chamber and be ignited with the gasonline.
The white smoke when you first start lets you know of this condition. Each cylinder will need a compression check to test for leaks.
Pressure checking the cooling system does not provide you with enough information.
Its possible that your coolant is slowly being burned off in the cylinders possibly caused by a blown head gasket or cracked head,also i would definately check your oil and see if its overfull or milky looking,usually indicates a head gasket problem also.If your intake gaskets are leaking internally your engine could be sucking it in and burning it. With no leaks coming from the vehicle these are about the only things it could be!!
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Ask mechanic to put green anti freeze into your water and use a radiator pressure tester to find the leak while the car is stationary.The pressure tester is a bit pricey to buy for a one off test so radiator repair workshop probably best place to get test done.Green anti freeze is easy to see when it leaks,like a tracer dye.Good luck
If it's leaking at the top of the engine down. Look at the top of the engine at the front and you'll see a bleeder valve on top a black housing. These housings like to come apart at the glued seams. If it's leaking at the lower part of the engine towards the front, it could be your water pump leaking. Check your oil and if you see the color of the oil looking like chocolate milk, your water pump needs replaced, the oil will need changing as well. Do a coolant system pressure test and see if your hoses somewhere are leaking. Also check for your surge tank leaking. This is the tank that you put coolant into.