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Sadly after replacing a punctured aux radiator, and intercooler pump, and topping off the coolant. My transmission fluid is still indicating above 210F. It starts at around 82F on startup and slowly creeps up 2-3 degrees every 10 secs or so until it hits 200F then my car starts to sound like a vacuum cleaner. Any ideas as to why I still have this issue even after replacing multiple parts?
Sadly after replacing a punctured aux radiator, and intercooler pump, and topping off the coolant. My transmission fluid is still indicating above 210F. It starts at around 82F on startup and slowly creeps up 2-3 degrees every 10 secs or so until it hits 200F then my car starts to sound like a vacuum cleaner. Any ideas as to why I still have this issue even after replacing multiple parts?
⏱️ 700HP Facelift converted C63 S Coupe with Drexler 3.06 plated LSD
Originally Posted by Blxckc63s
Sadly after replacing a punctured aux radiator, and intercooler pump, and topping off the coolant. My transmission fluid is still indicating above 210F. It starts at around 82F on startup and slowly creeps up 2-3 degrees every 10 secs or so until it hits 200F then my car starts to sound like a vacuum cleaner. Any ideas as to why I still have this issue even after replacing multiple parts?
If you're certain there's no more leaks then it sounds like you've got bubbles in the system.
Did you replace the aux radiator with a brand new one? Or used?
I’ve tried purging the air with squeezing hoses while heat is on blast, a few bubbles came up but the problem still persists with the higher than normal temps
I’ve tried purging the air with squeezing hoses while heat is on blast, a few bubbles came up but the problem still persists with the higher than normal temps
*****You need to fill the system up the correct way using a coolant refill tool that seals well. No way on a complex modern cooling system like what is on these cars that you can get anywhere near purging the air in that system by squeezing the hoses - the water pumps don't prime as easily on this type of system and it is very easy to cause cavitation. You overheat that transmission enough, you will overheat the bands, steels, and friction plates in that transmission and that heat will just kill or reduce the longevity of it. A rebuilt trans for the C63s done by a competent professional using decent quality components will eat up $4-5k easily with removal, installation and reprogramming, etc..
*****You need to fill the system up the correct way using a coolant refill tool that seals well. No way on a complex modern cooling system like what is on these cars that you can get anywhere near purging the air in that system by squeezing the hoses - the water pumps don't prime as easily on this type of system and it is very easy to cause cavitation. You overheat that transmission enough, you will overheat the bands, steels, and friction plates in that transmission and that heat will just kill or reduce the longevity of it. A rebuilt trans for the C63s done by a competent professional using decent quality components will eat up $4-5k easily with removal, installation and reprogramming, etc..
Do it right.
Thanks for the information, I thought the funnel fill kit would’ve been sufficient enough. But I will take it in and have them do a coolant flush professionally.
Sadly after replacing a punctured aux radiator, and intercooler pump, and topping off the coolant. My transmission fluid is still indicating above 210F. It starts at around 82F on startup and slowly creeps up 2-3 degrees every 10 secs or so until it hits 200F then my car starts to sound like a vacuum cleaner. Any ideas as to why I still have this issue even after replacing multiple parts?
UPDATE; took it in and had them purge air from system aswell as top off coolant. Temps are steady around the 180 mark. Thanks to everyone who had an input.
⏱️ 700HP Facelift converted C63 S Coupe with Drexler 3.06 plated LSD
Originally Posted by Blxckc63s
UPDATE; took it in and had them purge air from system aswell as top off coolant. Temps are steady around the 180 mark. Thanks to everyone who had an input.
This is good news to hear. Glad the car is sorted mate 🙌
UPDATE; took it in and had them purge air from system aswell as top off coolant. Temps are steady around the 180 mark. Thanks to everyone who had an input.
A little late to the party, but I am experiencing similar issues. If anyone knows, is it possible to successfully purge air from the system without draining the whole system and refilling using vacuum?
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