Where does the coolant come from that goes to the ISC and the TB? I know it returns threw the metal line that is on the block, but where does it originate from? It seems like their was a hose barb cast into the lower intake manifold at the head that looked like it had deposits on it from coolant. Is that the source?
TB and ISC coolant hoses question
- Thread starter SupraMan1987
- Start date
I've got that picture, was hoping someone could confirm that it was in fact the source. Last thing I need is coolant going somewhere it doesn't need to be.
the barbed fitting should be for the coolant hose that runs up into the isc, atleast mine is. Its towards the front of the lower intake near the fuel vsv.
Its on the bottom of the intake between the 1st and 2nd runner. If it bothers you that much just plug it and move on.
Please do some research and actually know what you're doing before deleting that stuff. It's there for a purpose. I'll even give you a hint: it doesn't need to be freezing outside for your throttlebody to freeze. 
Search posts by jdub, there was a discussion about this recently.
Search posts by jdub, there was a discussion about this recently.
shaeff;1440001 said:Please do some research and actually know what you're doing before deleting that stuff. It's there for a purpose. I'll even give you a hint: it doesn't need to be freezing outside for your throttlebody to freeze.
Search posts by jdub, there was a discussion about this recently.
Yeah I know But I live in South Texas
As stated by many users on multiple posts, if it came with it it usually means its there for a reason. Egr, charcoal canister and so on. They would not put cooling lines for these components if they were not necessary.
NTRA08;1440004 said:
I don't care where you live. Please read:
Reference:jdub said:
http://www.supramania.com/forums/showpost.php?p=1432468&postcount=4
And:
Reference: http://www.supramania.com/forums/showpost.php?p=1344227&postcount=5jdub said:Here's a chart that shows when intake icing is most likely...yes, it's an aircraft engine, carburetor icing chart. Works exactly the same for an earth bound motor with a TB though:
If you live in a climate where the humidity/temp conditions are in the orange, green, or blue bands you might want to keep the coolant hoses...definitely in the blue or green. Like I said, it does not have to be freezing outside or freezing precipitation (snow, sleet, etc) for intake icing to form. For example, at +20 deg C OAT, +10 deg C dewpoint (~50% humidity) puts the engine well in the green zone for moderate icing at cruise (steady state RPM) and serious icing at idle RPM.
hvyman;1344055 said:
You do not want to "bypass that shit" without thinking about it. The good news is all that will happen is the engine will run like crap and perhaps strand you on the roadside for a bit till the ice melts...while you scratch your head and blame it on "the crappy 7M". Different story on an airplane...there's been a lot of smoking holes from this happening to airplane engines.
According to weather.com, it's 55* in Conroe, TX right now. Drop that another 5* with the right weather conditions, and you're vulnerable.
Like I said, I don't care where you live.