Overheating in park

hello thank for using 2CarPros.

it seems engine is leaking coolant that you smell antifreeze and the system filled with air because of the leak.

check our guide for engine overheating.:
https://www.2carpros.com/articles/symptoms-of-an-overheating-engine
https://www.2carpros.com/articles/engine-overheating-or-running-hot

Check the tables fig 1,2,3,4 trouble shooting specific to your car.
Let us know your results.
Thank you.

The mechanic has checked all hoses, no leaks. nor is there a problem with thermostat or water pump. he seems baffled by it too. Check engine light comes on and off as well. coolant level is normal too. i am not loosing any. They also burped the lines also.

hello,

to narrow our problem read the fault codes and send to us, because you mentioned check engine lights on.
https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Have you performed all the diagnostics step by step as mentioned in the attached picture above? engine belt tightness, coolant reservoir cap holding pressure, antifreeze content, radiator front air duct open? radiator fans are working properly?system properly bled?

Yes, all that has been done by my mechanic. i just dropped it back off to their shop.

Problem also can be from a restriction inside cooling system or water pump flow. Please send us feed back what happens with you we are interested to know.
Thank you.

This was done to my car on 3-15 because of the issues above i was having. Just got a call from the shop since i took it back the second time. now they say it is a blown head gasket. So why would they have not known that the first time?

Hello,

Can you see if coolant bubbling inside the coolant reservoir? Oil boiling noises? Have you checked the reservoir cap it's function to prevent coolant boiling.

Check our guide to check head gaskets:
https://www.2carpros.com/articles/head-gasket-blown-test

If you want to check head gasket problem by yourself you can do chemical test you can buy it from any tool shop. it's a tube filled with chemical product color is blue remove coolant reservoir cap put on the reservoir start the engine when this chemical change its color from blue to green or yellow means you have exhaust leak inside te coolant that overheats the engine that means head gasket problem.
If you confirm problem of head gasket I recommend to use product called blue devil it can fix some gasket issues its price is $50.00 you can find it at Amazon.
Please send us feed back what happens.
Thank you.

Yes coolant is bubbling in reservoir. i saw that happened when i first bought it. however, the same shop said it did not have blown head gasket at that time. now third time there they say it does? That is why i am confused? I even told the guy it was doing that. But no smoke from exhaust and no milky looking oil either. I may just take to a different shop to have head gasket fixed. i have already heard these equinox's have weak head gaskets anyway.

In my opinion use the blue devil product it's the cheapest way many cars solved gasket problem.