Hi Scotty,
I have a a used 2011 Corolla LE with 81,000 miles. I bought it from a private party last year.
When I open the Radiator cap to check my coolant (when the engine is cold), there is always pressure release and coolant is forced into my reservoir. My engine also runs a little cold with the Temperature gauge below the middle mark even after almost an hour of driving.
I have changed the radiator cap but the issue persists.
I am suspecting that my thermostat may be stuck open (yet to check) but can that explain the pressure in the radiator too, even when the car has been sitting all night?
Thanks
when you loosen the rad cap, you break the seal, and the coolant in the tube flows back into the tank.
It's the same as if you had a straw full of fluid with your finger at the top. When you lift your finger, the fluid falls out. Nothing to worry about.
OK. Thanks.
I've never checked coolant that way. I normally use its reservoir.
Me neither. I only opened the cap to be sure it was not failing.
You might have air in the system......
OK. Will try and burp it.
I like the radiator cap was replaced. Im not following about removing the radiator cap, pressure being released, and flowing the resevoir. Opening the radiator cap and hearing a hiss? A cold engine typically has 0 pressure. Air in the system, yea, and heck yea to your going burping the system!
👍