Overheating 2011 chevy aveo lt

Asked by addicted2krazy Oct 16, 2020 at 07:26 AM about the 2011 Chevrolet Aveo 1LT Sedan FWD

Question type: Maintenance & Repair

I have a 2011 chevy aveo lt. It started overheating
about a week ago, I seen I had a hole in my upper
heater hose, I changed that and was able to make
about a 1 and a half hr to 2 hr trip and it was fine.
The next day on my way to work, it overheated
again. I took it to AutoZone and had my check
engine light read, came up as thermostat so I
changed that. Drove it around the parking lot and it
was fine, headed home and AGAIN it started to
overheat. Went to another AutoZone by my house
and rented a coolant pressure kit  test, had no
pressure what so ever and as I was looking I
realized one of my coolant hoses was bubbled out
and could hear when I squeezed it that it was
leaking so I changed that. Now as soon as I
changed that hose, my check engine light went off
and it ran GREAT but only for about 4 days... My
check engine light is still off but my coolant
reservoir has steam coming out of it and it's
sucking antifreeze like no tomorrow with no leaks
at all... That's the only symptom I'm having at this
point so I'm not sure what to do next.

2 Answers
40,125

beatupchevy answered 4 years ago

A $6** thermostat is probably junk , the radiator cap may be bad also allowing pressure to go into the reservoir ., buy these at the dealer or other OEM source to eliminate any guess work . Over heating is never good for an engine . Do a compression test and/or block test to see if the head gasket is on it's way out . Is the exhaust white ? Is there goop under the oil fill cap ?

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James answered 4 years ago

With the engine cold remove the cap from the coolant recovery tank and start the engine. Add coolant to the full line and keep adding as the engine warms up and the coolant level drops down. Once the engine is fully warmed up, as evidenced by the upper radiator hose being hot and the temperature gauge at about the halfway point, the coolant level should stop going down. When it does the system is full and you should be good to go. This can take up to 30 minutes to complete. You lost a lot of coolant when the heater hose was leaking and now you have air in the cooling system. Hope that helps! Jim

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