Have the cars cooling system tested at a reputable shop . The test you want to have done is a LEAK DOWN test which will give you a good idea where this problem is. Often this problem is due to a leaking head gasket.
coolant from exhaust indicates a blown headgasket or a cracked head on the engine. be sure that it is coolant and not just condensation coming from exhaust before you do repairs
You will notice the coolant reservoir level low with no signs of leakage, as the condition advances you may notice white, sweet smelling exhaust coming out the tail pipe and worse, engine coolant mixing with the engine oil.
Coolant reservoir level is always low and you don't see any leaks. White, sweet smelling smoke coming out the exhaust is another clue.
catalytic converter converts some oxides to water, so water not a surprise in and of itself. Is there Antifreeze in your exhaust moisture? are you sure it is antifreeze? are you loosing coolant reservoir level at a measurable rate? Coolant only gets into exhaust by way of the cylinder head developing a leak. from the cooling jacket into the exhaust port of a cylinder. if it was leaking into the combustion chamber, you would have coolant in your oil, and the plug would be fouled with scale. possible to attempt a leak seal with K&N Metal Block Seal, if and ONLY if the leak is NOT into a combustion chamber. Or do the right thing and get the head repaired. Or, have your intake gaskets checked for leaks. On the 3.4 the intake gasket can leak coolant into the engine.
If your exhaust is getting in your coolant, you have a reeeeeeeeeeeeaaaaaaaaaaaaaaaaallllllllllllllllllyyyyyyyyyyyy major malfunction.
A blown head gasket could allow coolant to enter the combustion chamber from the water jacket. The coolant probably is running out the exhaust on first start-up. More often, you will notice the coolant being pumped out of the overflow as the exhaust gas pressurizes the coolant. You should look for this symptom when the engine warms up. Coolant in the exhaust on start-up and then the coolant overpressure overflow from the expansion tank or radiator happening together is almost sure indication of the head gasket failure.
If the coolant reservoir is low or empty, I would say you have a bad head gasket.
Bad head gasket? Oil mixing with coolant?
it sounds like your coolant over flow tank is leaking. it is a common problem with these cars. might also check your radiator for leaks or your exhaust for coolant, but if there is coolant in your exhaust that would mean blown heads
If you mean water expansion reservoir then a blown head gasket can allow exhaust gasses or oil to pass into the water jacket.
Sounds like bad head gasket.
headgasket leak and exhaust gas is getting into the coolant
Coolant leaking out from exhaust is bad news, probably a cracked head or bad head gasket or both. Be sure it is coolant that is leaking and not just plain water. Plain water is normal to drip out the exhaust, it's caused by condensation.
1) Your engine is overheating and the coolant is boiling. Or 2) Exhaust is leaking into the coolant, probably through a bad head gasket or cracked head.
You need a special tester called a block check. You fill it with a special fluid and then use it to suck fumes out of the radiator . if the fluid turns yellow it means there is exhaust gasses in the coolant.
If you are only leaking coolant into the exhaust and use the type with copper in it, then yes, it should stop the leak. If coolant is getting into the oil or exhaust is getting into the radiator then no, none of them will do any good.
Coolant getting into the fuel or oil.
The head gasket is blown.
Combustion leak detection. The liquid changes color from blue to light green when Carbon Dioxide (in exhaust gas) is passed through it. It tests for leaks from the vehicle's head gasket(s) or cracked engine block into the cooling system. The head gasket is the culprit in most all cases. Also, if there is exhaust gas in the cooling system, usually there will be other indications of head gasket or block failure, such as white smoke from the exhaust (coolant vaporizing in the combustion process), oil in the coolant or vice versa (is known as the "chocolate shake" where the coolant or engine oil starts to look like milk chocolate from the two mixing), and/or bubbles in the coolant reservoir while the engine is running. The Combustion Leak Detector will tell you in no time.
If the smoke is coming from the exhaust then it's coolant. If its not turning over then it could be hydrolocked from a coolant leak.
If there is no leak visible so you can see antifreeze under the parked car, you probably have a head gasket going bad. You may have some signs of steam in your exhaust, or at least a sweet smell coming from the exhaust. You should have a compression test done on your engine. That is exactly what the overflow reservoir is for. When the engine is hot, excess coolant goes into the overflow tank, as the engine cools,it draws coolant back into the radiator.
It is located under the Coolant reservoir. First remove the air intake filter box and boot, remember to remove the 2 wire harness attached to the box assembly. Looking underneath/behind the coolant reservoir you will see a 5/16 steel line stemming up from the exhaust manifold along side the head. You will need a 25mm wrench and a 16mm wrench to turn opposite each other. Remove the wire harness from the EPS. When removing the old sensor be careful not to damage the steel line. That's it!
coolant leaking into the engine
This is normal (condensation) as long as it is not engine coolant dripping out.