Coolant issues
Thread Starter
2nd Gear
Joined: Dec 2011
Posts: 2
Likes: 0
Coolant issues
Hello guys i need your help
Im from Israel and i impurted my 09 6.2L Corvette from the U.S CA... so far so good , as a part of my first general oil changing i'v bean refered to unproffesinall mechanic
(GM dosnt import that car to here so they wont servise it)
anyhow this unproffecinal guy replaced the coolnet liquids as a part from the service and i guess he just did it worng
or there's very specific way to do it that riquiers specifics tools that he dosnt have
what he did is: draind the water from the radietor and the Condensate tank to replaced them saince then the car suffering from
extreme randoms heat problemes(without any special resone) which will take the heat meter to the red zone very fast (30 sec or soo) we tried to repalce it again and nothing helped
in one point we changed the thermostat which didnt help either i must say tho that by then the car functiend without those issiuse ...
Thx allot
Eddie
Im from Israel and i impurted my 09 6.2L Corvette from the U.S CA... so far so good , as a part of my first general oil changing i'v bean refered to unproffesinall mechanic
(GM dosnt import that car to here so they wont servise it)
anyhow this unproffecinal guy replaced the coolnet liquids as a part from the service and i guess he just did it worng
or there's very specific way to do it that riquiers specifics tools that he dosnt have
what he did is: draind the water from the radietor and the Condensate tank to replaced them saince then the car suffering from
extreme randoms heat problemes(without any special resone) which will take the heat meter to the red zone very fast (30 sec or soo) we tried to repalce it again and nothing helped
in one point we changed the thermostat which didnt help either i must say tho that by then the car functiend without those issiuse ...
Thx allot
Eddie
Le Mans Master
Joined: Jan 2005
Posts: 5,611
Likes: 5
From: Thousand Oaks California
Correct, there are no GM operations in Israel. I believe the problem is air in the engine cooling system. When the coolant was drained, the coolant volume was replaced with air. Also, when you had this problem and the thermostat was replaced, it is possible that some of the air was purged by removing the thermostat, helping to eliminate the problem.
The correct antifreeze-coolant mixture is 50% Dex-Cool extended life coolant (orange in color) and 50% (distilled) water. You really do not need any special tools. GM dealers do have tools to do this job, but you can do the job without the special tools. After the coolant overflow reservoir tank is filled to the correct level with a cold engine, allow the engine to idle with the coolant overflow reservoir cap off. Keep aware of the coolant temperature. If the engine does start to over heat, shut it off for a few minutes. As the engine warms up and the thermostat opens, the engine will start to purge the air in the engine cooling system. As the coolant level drops in the coolant reservoir, add more of the 50/50 coolant mixture as required. It helps to do this with the front of the car elevated a little. When you have most of the air out of the cooling system, replace the reservoir cap and drive the car at moderate speeds. For the next few days, check the coolant level in the reservoir frequently. With a cold engine, add more 50/50 coolant mixture as necessary. Repeat this process until all of the air is purged from the engine cooling system. You will know when the air is completely purged because the coolant level in the reservoir will no longer drop.
CAUTION: NEVER OPEN THE CAP ON THE COOLANT RESERVOIR WHEN THE ENGINE IS HOT. Only open when the engine is cool. Open slowly as there is pressure in the system.
Hopefully, this process will solve this issue.
The correct antifreeze-coolant mixture is 50% Dex-Cool extended life coolant (orange in color) and 50% (distilled) water. You really do not need any special tools. GM dealers do have tools to do this job, but you can do the job without the special tools. After the coolant overflow reservoir tank is filled to the correct level with a cold engine, allow the engine to idle with the coolant overflow reservoir cap off. Keep aware of the coolant temperature. If the engine does start to over heat, shut it off for a few minutes. As the engine warms up and the thermostat opens, the engine will start to purge the air in the engine cooling system. As the coolant level drops in the coolant reservoir, add more of the 50/50 coolant mixture as required. It helps to do this with the front of the car elevated a little. When you have most of the air out of the cooling system, replace the reservoir cap and drive the car at moderate speeds. For the next few days, check the coolant level in the reservoir frequently. With a cold engine, add more 50/50 coolant mixture as necessary. Repeat this process until all of the air is purged from the engine cooling system. You will know when the air is completely purged because the coolant level in the reservoir will no longer drop.
CAUTION: NEVER OPEN THE CAP ON THE COOLANT RESERVOIR WHEN THE ENGINE IS HOT. Only open when the engine is cool. Open slowly as there is pressure in the system.
Hopefully, this process will solve this issue.
Track Junky
Joined: Jun 2007
Posts: 4,074
Likes: 36
From: Orlando Area
Tech Contributor
1. Remove the rubber hose from the 1/4" crossover pipe between the heads (its an aluminum pipe connected to a rubber hose that runs forward towards the radiator.
2. Put rags and or catch can under end aluminum end of connection.
3. Take the reservior overflow tube and hold it straight up in the air. Its a flexible plastic ribbed tube on the back of the reservior that points down towards the ground.
4. With your thumb over the rubber hose that you removed in step one, Blow down into the reservoir overflow. It tastes bad and takes a good bit of pressure to do.
5. You will begin to see cooland and bubbles from the aluminum crossover pipe. Keep going until you see nothing buy coolant.
That will purge the heads of any entrapped air. The coolant temp sensor should be on the Driver side head just behind the alternator (at least for an LS2). After doing this, fill the reservoir back up and drive around for a few minutes. Once the thermostat opens up, it should purge the remainder of the air out of the radiator and engine block.
This is a method used to "prime" the heads so to speak.
Hope this helps,
Sean
2. Put rags and or catch can under end aluminum end of connection.
3. Take the reservior overflow tube and hold it straight up in the air. Its a flexible plastic ribbed tube on the back of the reservior that points down towards the ground.
4. With your thumb over the rubber hose that you removed in step one, Blow down into the reservoir overflow. It tastes bad and takes a good bit of pressure to do.
5. You will begin to see cooland and bubbles from the aluminum crossover pipe. Keep going until you see nothing buy coolant.
That will purge the heads of any entrapped air. The coolant temp sensor should be on the Driver side head just behind the alternator (at least for an LS2). After doing this, fill the reservoir back up and drive around for a few minutes. Once the thermostat opens up, it should purge the remainder of the air out of the radiator and engine block.
This is a method used to "prime" the heads so to speak.
Hope this helps,
Sean
Drifting
Joined: Feb 2007
Posts: 1,537
Likes: 1
From: Southlake Texas
If you want to do your own maintenance (so its done correctly), buy a Uview 5500 coolant flush tool (about $100 from Amazon). It takes only 5 minutes to pressure test the cooling system and replace the coolant. All air is removed from the system and you are good-to-go without any burping or refilling.
By comparison, Snap-on re-badges the Uview and sells it for $243 and the Vac-N-Fill tool used by GM is $700 to $1000.
By comparison, Snap-on re-badges the Uview and sells it for $243 and the Vac-N-Fill tool used by GM is $700 to $1000.
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 231
From: SoCal
Correct, there are no GM operations in Israel. I believe the problem is air in the engine cooling system. When the coolant was drained, the coolant volume was replaced with air. Also, when you had this problem and the thermostat was replaced, it is possible that some of the air was purged by removing the thermostat, helping to eliminate the problem.
The correct antifreeze-coolant mixture is 50% Dex-Cool extended life coolant (orange in color) and 50% (distilled) water. You really do not need any special tools. GM dealers do have tools to do this job, but you can do the job without the special tools. After the coolant overflow reservoir tank is filled to the correct level with a cold engine, allow the engine to idle with the coolant overflow reservoir cap off. Keep aware of the coolant temperature. If the engine does start to over heat, shut it off for a few minutes. As the engine warms up and the thermostat opens, the engine will start to purge the air in the engine cooling system. As the coolant level drops in the coolant reservoir, add more of the 50/50 coolant mixture as required. It helps to do this with the front of the car elevated a little. When you have most of the air out of the cooling system, replace the reservoir cap and drive the car at moderate speeds. For the next few days, check the coolant level in the reservoir frequently. With a cold engine, add more 50/50 coolant mixture as necessary. Repeat this process until all of the air is purged from the engine cooling system. You will know when the air is completely purged because the coolant level in the reservoir will no longer drop.
CAUTION: NEVER OPEN THE CAP ON THE COOLANT RESERVOIR WHEN THE ENGINE IS HOT. Only open when the engine is cool. Open slowly as there is pressure in the system.
Hopefully, this process will solve this issue.
The correct antifreeze-coolant mixture is 50% Dex-Cool extended life coolant (orange in color) and 50% (distilled) water. You really do not need any special tools. GM dealers do have tools to do this job, but you can do the job without the special tools. After the coolant overflow reservoir tank is filled to the correct level with a cold engine, allow the engine to idle with the coolant overflow reservoir cap off. Keep aware of the coolant temperature. If the engine does start to over heat, shut it off for a few minutes. As the engine warms up and the thermostat opens, the engine will start to purge the air in the engine cooling system. As the coolant level drops in the coolant reservoir, add more of the 50/50 coolant mixture as required. It helps to do this with the front of the car elevated a little. When you have most of the air out of the cooling system, replace the reservoir cap and drive the car at moderate speeds. For the next few days, check the coolant level in the reservoir frequently. With a cold engine, add more 50/50 coolant mixture as necessary. Repeat this process until all of the air is purged from the engine cooling system. You will know when the air is completely purged because the coolant level in the reservoir will no longer drop.
CAUTION: NEVER OPEN THE CAP ON THE COOLANT RESERVOIR WHEN THE ENGINE IS HOT. Only open when the engine is cool. Open slowly as there is pressure in the system.
Hopefully, this process will solve this issue.
DH
