Skip the auto shop - Our mechanics make house calls

Q: Overheating - 2006 Toyota Sienna

asked by on

Toyota forces water out through overflow , then heats up. Not radiator cap problem. Someone suggested compression leak. If this is problem, should computer throw off a code to reader?

My car has 145000 miles.
My car has an automatic transmission.

A: Hi. The computer probably won't throw a...

Hi. The computer probably won't throw a code for a compression leak. If the compression was that bad you would get a misfire code from the computer. I think you have a clogged radiator or heater core causing your problem. These parts I would suggest replacing first. The worst case scenario is the head gasket is blown causing the coolant to come out of the over flow. A compression test and head gasket test will determine if the head gasket is blown. If you need help with this, a certified technician from YourMechanic can come to your car's location to inspect the overheating issue and advise you on the correct repairs.

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: Even though I replaced battery, car won't start.

If the battery is brand new and fully charged and the car turns over but will not start the battery is not the problem. The electrical aspect of the starting system is doing its job. Engines require fuel compression and...

Q: How do I know if the doors have locked or unlocked?

Whether you’re using the remote to open the car or you’re locking the doors using the electronic key, you need a way to make sure that the doors are actually locked or unlocked without having to guess. There’s good news....

Q: Coolant leak causing overheating

If you can see the leak, that is where you need to start. A cooling system cannot operate efficiently with a leak or low level condition. If there are no leaks, the problem could be the thermostat, this is the...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.