C8 HTC Overheating
Thread Starter
Instructor
Joined: Sep 2022
Posts: 195
Likes: 187
From: Maryland
C8 HTC Overheating
I installed new part on car, part required that coolant reservoir be unbolted and pushed aside. As I was getting ready to bolt reservoir back on, it slipped out of my hand on an angle to where I heard air bubble rushing in.
I reinstalled the reservoir, then went on test drive. Car started to get above 195degrees. I then decided hit the highway and did 3000rpms for 10minutes to try to push out bubbles and it did NOT work. I took car out again today hit the highway, and again did 3000Rpm's for 10mintues and did NOT work.
The car stays cool as I am performing the 3000 rpms for 10 minutues, it afterwards when it heats back up.
Any Thoughts Guys?
I reinstalled the reservoir, then went on test drive. Car started to get above 195degrees. I then decided hit the highway and did 3000rpms for 10minutes to try to push out bubbles and it did NOT work. I took car out again today hit the highway, and again did 3000Rpm's for 10mintues and did NOT work.
The car stays cool as I am performing the 3000 rpms for 10 minutues, it afterwards when it heats back up.
Any Thoughts Guys?
Drifting
Joined: Mar 2020
Posts: 1,570
Likes: 1,029
From: 31 hours East of Peoria, AZ
What temp did your coolant get to?
Overheating actually throws a message on the DIC telling you to pull over and turn of the car for 20 minutes (that is from someone whose C8 hit 266F (another's went to 278F).
I've had mine hit 214F while waiting to get gas ... no issues.
With regard to the air bubble: I had a Land Cruiser that needed to be "burped" after changing the coolant. It eventually "burps" after running that vehicle with the rad cap off (has to be "cold" started). I don't know if that would be the method for the C8. The air should work its way out eventually through the coolant overflow tank (my guess is the C8 has one).
Overheating actually throws a message on the DIC telling you to pull over and turn of the car for 20 minutes (that is from someone whose C8 hit 266F (another's went to 278F).
I've had mine hit 214F while waiting to get gas ... no issues.
With regard to the air bubble: I had a Land Cruiser that needed to be "burped" after changing the coolant. It eventually "burps" after running that vehicle with the rad cap off (has to be "cold" started). I don't know if that would be the method for the C8. The air should work its way out eventually through the coolant overflow tank (my guess is the C8 has one).
