coolant in the throtal body ??

[kling-on]

ok dumb ass question I have a 5.3 Vortec and there is a small tube on the bottom of the throtal body. It has a "plug" over it and there is coolant driping from it and now the truck has lost power under hard loads ???? any ideas ??? is there coolant in the throtal body ??? maybe a intake leak ??? man I have no idea I guess its tear down time ... I wish I had done it myself the first time now

 

[phishincruisin]

the throttle body has coolant running through it stock. thats what the tube is for, it helps prevent the IAC motor from freezing. Does the steam line from your heads go to the throttle body and then the other side is plugged? a picture could help too!

 

[kling-on]

the throttle body has coolant running through it stock. thats what the tube is for, it helps prevent the IAC motor from freezing. Does the steam line from your heads go to the throttle body and then the other side is plugged? a picture could help too!

sounds about right for what I see Ill get pics tomarrow

 

[jacksfj62]

Yep Phisincruisin is right there is a steam port for the throttle body and if you have it plugged it could cause that problem I guess. I would suggest either blocking off the TB and routing the hose back into the radiator or if you live where it gets pretty cold then keep the steam port hooked up just make sure it is routed back to the rad.

 

[phishincruisin]

Yep Phisincruisin is right there is a steam port for the throttle body and if you have it plugged it could cause that problem I guess. I would suggest either blocking off the TB and routing the hose back into the radiator or if you live where it gets pretty cold then keep the steam port hooked up just make sure it is routed back to the rad.

yep, route it to the radiator, upper radiator hose, water pump, or heater line. I'm still deciding where to route mine too, as each one of those options has its advantages and disadvantages. Except for the piece of mind of having the upper radiator hose one piece, that is the best location as the water pump is pulling coolant through this hose, and would pull the steam out of the top of the heads. Radiator is good too, but you have to soldier a fitting in the radiator to accept the hose. Chevy had a fitting that they used in some vehicles that routed the steam line to a heater hose. Can't remember what those came out of, but it was a SS version of some vehicle.
The LS1 water pumps have a flat spot on the top that is perfect for tapping and putting a fitting on, but I'm not so lucky with a truck motor.

Jack, where are you planning to route yours?

 

[jacksfj62]

I already routed mine I picked up a flex-a-lite inline adapter for the upper hose used one fitting for the steam port and the other for my temp sender since I did not want to pull my PS head to drill and tap it. Part number 32082 I used the 1 3/4" adapter but would have been easier to use 1 1/2" which is the part number it gave. If I have a chance tomorrow I will post a pic of it.

 

[kling-on]

Were did they go o the donor trucks ?? I live in south Texas so it only get cold for 3 or 4 days here ... It's already hit 100 once this year .



If it's a steam line I was thinkin of routein it to the over flow

 

[jacksfj62]

Don't know if it gets full flow or not but I would try the over flow and see how that works. Just keep an eye on it to make sure it doesn't over flow and you end up loosing to much fluid. On the donor trucks it is hooked up to the radiator on the right side just above where the stock tranny cooler lines are IIRC.

 

[kling-on]

Don't know if it gets full flow or not but I would try the over flow and see how that works. Just keep an eye on it to make sure it doesn't over flow and you end up loosing to much fluid. On the donor trucks it is hooked up to the radiator on the right side just above where the stock tranny cooler lines are IIRC.

Ya I looked at my buddys and saw that but I drove mine for 9K with it pluged off so I hope the res. Will work

 

[kling-on]

FYI the coolant res doesn't work even though it was blocked off befor of given a place to flow the steam line will ... Overflowed in about 2 mins ... So on to plan C I'm goin to make it T into the heater lines

 

[jacksfj62]

If you do a T to the heater lines I would do it on the return line.

 

[kling-on]

If you do a T to the heater lines I would do it on the return line.

yup... I planed the rear heater return too... I'll let you know how it works out

 

[kling-on]

heres the blocked off plate