Skip the auto shop - Our mechanics make house calls

Q: I just put in a new radiator and a new thermostat in my Cavalier and I'm still overheating there's no leak but my water keep disap

asked by on

I put a new radiator and thermostat radiator hoses my car still overheats why water disappearing it's not in my oil what else could be

My car has 16200 miles.
My car has an automatic transmission.

A: Anytime an engine is overheated you may war...

Anytime an engine is overheated you may warp or crack the cylinder head that may cause coolant to get into one or more of the cylinders. You should first have the cooling system pressure tested to see if the cooling system holds pressure. You may not always get any coolant into the oil that will show up. If you have the spark plugs removed from the engine you can identify which cylinder is getting coolant into it by looking at the spark plugs to see which one is cleaner or different burning from other spark plugs. If you find one of the spark plugs with coolant on it then the cylinder head or head gasket is bad and would need to be removed and the head checked for cracks and flatness in a machine shop. If the head is cracked then it will need to be replaced.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: How to remove a radiator from a Mercedes 560sel 1990 model

Once you have the coolant drained, you will need to disconnect the cooling system hoses, and possibly the transmission cooler lines. Some vehicles require removal of the fan for clearance as well. You will need to remove a few trim...

Q: Car overheating and not accelerating

As far as the thermostat causing the motor to sound muffled, I personally have never heard of such a thing. Your thermostat controls when the flow of coolant in your cooling system starts, allowing the coolant to flow and cycle...

Q: Why are all my dashboard lights on? - 2000 Chevrolet Cavalier

GM has had many issues with their digital dashboards, and this sounds like one more. Disconnecting the battery for a few minutes, then re-connecting it will give you a reset. More often, a "rebuild" or refurbishment of the digital dash...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...