Why coolant through tb
Senior User
Joined: Feb 2002
Posts: 224
Likes: 0
From: Mill Creek, WA
Why coolant through tb
Regardless of the actual reason (which has been debated for the longest time), leaving it or changing it makes no difference either way. As much as you'd think it would, it doesn't. Some people swear it does, but testing shows no difference at all. So basically, leave it alone, it was put there for SOME reason.
BTW -- it makes sense to me both purposes.
BTW -- it makes sense to me both purposes.
Senior User
Joined: Feb 2000
Posts: 482
Likes: 1
From: Connecticut
Why coolant through tb
I have read in several books on Ford Fuel Injection and Engine Control that the reason was as stated by steve83, it is to warm the TB to prevent icing. I figured if I disconnected it, the incoming air would pick up less heat. I'm sure that this is the case as aluminum is a good conductor of heat (reason for heatsinks being aluminum in electronics). The coolant will also tend to warm more than just the TB, like the upper intake near the TB but it will be limited by the fact that there is a gasket there. It does not warm the air enough to degrade performance though, there is not enough surface area hit by the incoming air. I felt no difference in performance. Maybe you do pick up a few HP but not enough to notice. I left mine disconnected since I've never had the plates freeze. I would think you would need cold temps and alot of humidity. Usually when it's very cold the humidity is very low. I also have 2 less hoses to develop leaks.
Mark
Mark
