Do you see excessive steam coming out the tail pipe? Is there foam on the bottom of your oil fill cap or is there any sign of coolant on your oil dipstick? Any or all of these would indicate a blown/cracked headgasket. Have seen this too many times, typically when a car overheats once or more. Some engines are more prone than others for blowing head gaskets when they overheat just once. Check for the above first (most common). How much are you losing? I haven't noticed any of those signs. It is a low-milage Tahoe and has the Dex Cool coolant in it. I have recently been told that this "corrodes" the intake manifold gasket. But...it isn't showing any of the classic signs. I usually have to fill up the overflow tank (to above the hot line) every month. The oil looks normal, and it runs well. The only symptom is the rapid loss of coolant. I am at a loss as to what to do with it. If it is the head gasket the problem will worsen over time and become noticeable. Try replacing the radiator cap, when it goes bad pressure is released from the radiator before the correct pressure is attained usually blowing steam into the overflow tank and either overflowing it or boiling it away.
Could be a failed engine coolant temperature sensor. Easy enough to replace and not too expensive.
This sounds like bad news. The coolant could be leaking into your engine and mixing with the engine oil, then cooking off. A simple test can tell if there's water in your oil.
I would say that you are losing coolant somewhere hoses,water pump,radiator.
Sounds like engine coolant getting in crankcase, could be an intake gasket going bad.
The coolant temp. sensor could be bad....or the thermostat could be stuck shut.....there are a few things it could be actually
could have a crack in it that is leaking under pressure
The coolant sensor moniters the coolant temperature. A faulty thermostat could cause the engine to run cool.
If the coolant reservoir can not maintain the proper level of coolant, it is possible the engine could over heat when the level drops.
If you have coolant on the top of the engine it could be a leaky thermostat housing or a leaking intake gasket.
There are ways to trace a leak. If you take it to a shop, they can mix in a dye with the coolant and after circulating a black light is used to find the leak. The dye only shows up under black light conditions. This is if you have a leak externally. If you are losing coolant internally, check your oil to see if it is foamy, or looks abnormal in any way. There are many coolant passages inside of an engine block and if one of the gaskets that seal it from leaking blows out or breaks, the coolant could be leaking internally into the engine. If you are losing coolant into the combustion chamber this is usually indicated by white smoke from your exhaust.
The coolant could have frozen in the radiator. If that happens the coolant in the engine will just get hotter. It could also be the thermostat.
Your engine could be losing power and your check engine light coming on for many reasons. It could be your spark plugs needing to be changed. Your fuel pump or fuel filter could be clogged or starting to wear out, or your engine oil is to low.
There could be several reasons. Under normal operation, the vehicle will experience this as the coolant heats up and expands into the over flow. A bad water pump, low level of coolant, as well as a clogged radiator could also cause this problem.
No, low coolant would cause the opposite.
A cracked engine block can cause different symptoms depending on where the crack is. The coolant could leak into the water or a cylinder. The crack could cause low compression in a cylinder. The crack could also leak coolant into the oil.
Could be a leak in a radiator hose, or radiator. ==Answer 2, Another Possibility== It could also be the radiator cap pressure relief valve action which vents coolant and/or coolant vapor to the coolant overflow reservoir/tank when steam is created in the coolant passages in the engine block. When the engine is shut off, the residual heat in the block can cause the additional pressure and/or steam.j3h.
It's an engine, not a motor, and a number of things. If it's a leak which allows coolant into the engine, it could get into the combustion chamber. This could eventually cause detonation, which could scar and damage the pistons. The vehicle could overheat, as well.
it is low coolant temperature, could be the thermostat could be the sensor for coolant temperature.
Sounds like head gasket is leaking allowing coolant into combustion chamber
check your coolant ASAP. If your coolant is low, you see any signs of oil in the coolant, or signs of coolant in the oil you may be losing it to a gasket leak. Have a mechanic check your intake manifold gasket. This is huge problem with the 3.1L engines and can lead to engine failure if not fixed early. Signs of oil in coolant would be stuff floating in the reservoir and muddy colored coolant. Signs of coolant in the oil could be lots of white vapor (water) in exhaust and light tan foamy stuff on the oil fill cap or around the hole for the cap. For no heat, there are other things you could check like your thermostat and water pump but the failed gasket will kill the engine. I only mention this because the heater in my Lumina took 10-15 minutes when it did work and not getting my gasket fixed killed the engine.
Check to see if coolant is mixing with engine oil. Run engine to normal operating temperature and remove oil dipstick, let a drop of fluid fall onto a hot part of engine, oil will smoke and coolant will sizzle. If coolant is into engine oil could be a sign of a bad head gasket If fluid level is correct, but still overheating, could be: Thermostat is not opening Water pump not circulating coolant Cooling fan not working
It could be that your coolant level is low or you have other coolant system problems. Whenever the check engine light is on, use a code scanner to find out why.
Engine could overheat, can bust your radiator hoses. If ran for long while overheated you could blow the engine.
you might have a blown head gasket and the coolant is leaking into the cylender and the engine is burning it.
One of the most common causes is from a crack in the radiator. The radiator will usually leak antifreeze before the coolant hoses or hose connections begin leaking during the life of a car. If you don't see evidence of a coolant leak on the exterior of the engine and cooling system or on the ground below the engine, the leak could be internal. This could be costly if allowed to continue. Have the system pressure tested and repaired asap.