Throttle Body Coolant pipe
Drifting
Joined: Mar 2017
Posts: 1,897
Likes: 164
From: Nashville TN
2017 C4 of Year Finalist
I believe it is actually to warm up the throttle body when it's cold outside, not to keep it cool. People like to clean up their engine bay, so that's something they'll do since it's really not necessary if you're not driving in cold weather.
Team Owner
Joined: Jul 2004
Posts: 28,413
Likes: 3,270
From: Hartford WI
Do you plant to drive your car when it is so cold, antifreeze is in danger of freezing? As mentioned, my reason is because I want easier access to the TB.
https://www.corvetteforum.com/forums...post1593621342
https://www.corvetteforum.com/forums...post1593621342
Team Owner
Joined: Jul 2004
Posts: 28,413
Likes: 3,270
From: Hartford WI
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Instructor
Joined: Aug 2010
Posts: 237
Likes: 17
From: San Diego CA
People in warm places do the coolant bypass to keep the fuel/air charge as cool as possible.
My understanding: the coolant passing through the TB prevents condensate icing in cold climates that could otherwise prevent the throttle body from operating properly.
My understanding: the coolant passing through the TB prevents condensate icing in cold climates that could otherwise prevent the throttle body from operating properly.
Racer
Joined: Mar 2020
Posts: 387
Likes: 148
From: Langton, Ontario, Canada
2025 C4 of the Year Finalist - Unmodified
GM does their cold-weather research in the town of Kapuskasing, in Northern Ontario,Canada, which is about an hour from Timmins, and about 100 miles from James Bay. It's DAMNED cold up there during the winter and they put the heating for the throttle body in for weather that one would see in mid-winter like that. Most of you in the southern states will never see cold like that, and anyone with a C4 and half a brain isn't going to drive their Corvette in winter conditions like that. Having said that, however, they do have to equip the cars for the worst weather possible. So, if you are confident that your car will never see minus 40 degrees (both F&C), feel free to bypass that feature.
Team Owner
Joined: Jul 2004
Posts: 28,413
Likes: 3,270
From: Hartford WI
GM does their cold-weather research in the town of Kapuskasing, in Northern Ontario,Canada, which is about an hour from Timmins, and about 100 miles from James Bay. It's DAMNED cold up there during the winter and they put the heating for the throttle body in for weather that one would see in mid-winter like that. Most of you in the southern states will never see cold like that, and anyone with a C4 and half a brain isn't going to drive their Corvette in winter conditions like that. Having said that, however, they do have to equip the cars for the worst weather possible. So, if you are confident that your car will never see minus 40 degrees (both F&C), feel free to bypass that feature.