Can someone explain to me why there is a coolant passage running through the throttle body?? sorry im such a noob
throttle body coolant passage why?
- Thread starter deftsound
- Start date
LiquidGT
Member
Its actually on the egr plate. Its there to cool the hot exhaust gasses going through the egr, and in turn keep the intake manifold and tb somewhat cool.
BK_CAULEY
it's built for speed not longevity, woman
BK_CAULEY
it's built for speed not longevity, woman
bloopbloob
Member
back on track...
like said before, the tb doesn't have coolant passages in it. it's the egr spacer that does, and it sits between the tb and the upper intake manifold. the reasoning is apparently that even the warm/hot coolant is still cooler than the recirculated exhaust gasses that pass through the egr spacer, therefore offering a cooling effect. some dispute this idea, and bypass the coolant lines running to and from the egr spacer. i have ran with both, and haven't noticed a difference either way.....
like said before, the tb doesn't have coolant passages in it. it's the egr spacer that does, and it sits between the tb and the upper intake manifold. the reasoning is apparently that even the warm/hot coolant is still cooler than the recirculated exhaust gasses that pass through the egr spacer, therefore offering a cooling effect. some dispute this idea, and bypass the coolant lines running to and from the egr spacer. i have ran with both, and haven't noticed a difference either way.....
back on track...
like said before, the tb doesn't have coolant passages in it. it's the egr spacer that does, and it sits between the tb and the upper intake manifold. the reasoning is apparently that even the warm/hot coolant is still cooler than the recirculated exhaust gasses that pass through the egr spacer, therefore offering a cooling effect. some dispute this idea, and bypass the coolant lines running to and from the egr spacer. i have ran with both, and haven't noticed a difference either way.....
that explains why the owner before me had them both connected togethor, i put it back the way ford had it
I was always told that it was to warm the air when it was cold outside. every car I have had that was equipped with a throttlebody has a coolant line running to it somewhere. I asked around different places and I always got the same answer. I was also told that unless you live in the great white north there is no need for it.
I have heard both too. Cool the EGR gas, and warm the throttle body on cold days...either way, mine is disconnected. My car runs absolutely perfect on hot and cold days. The performance is up to par for an old 91 5.0L engine and I am not gonna change a thing!! I might just replace the hoses themselves. They are the only ones that aren't new. I had one burst before at 4:00a.m. That sucked!!!!!!!!!!!
Shakerhood
20+ Year Stangneter 
I know on GMs the Line is there to keep the TB from icing up, but from all I have read on the 5.0 it is there to cool off EGR.
bloopbloob
Member
i always run it hooked up in the winter. but i've switched back and forth several times in the summer and never noticed any difference at all either way..... just my personal experience.
If it was needed for de-icing, they would have kept it for Cobras and 94-95's. The EGR design was changed and the lines went away.
For de-icing, a heat-riser would be more effective quicker anyhow.
For de-icing, a heat-riser would be more effective quicker anyhow.
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