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2000 Mack rd 688 e7 Water out of cooler


Moparmike

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The cooler on the bottom of my engine on driver side 

if I open the pit cock on it shouldn’t I get water out of it 

 

transmission cooler 

 

 

there’s nothing coming out of it even when truck is running 

I’m trying to drain coolant and change it out 

Edited by Moparmike
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5 hours ago, JoeH said:

Coolant drain is a petcock on the lower radiator hose/tube. Approximate location is under the alternator. I assume this is the petcock you're attempting to get coolant out of? 

Yes sir 

there’s the radiator hose that runs to the cooler then there’s a set of transmission lines that goes to the cooler and a line that runs to the reservoir tank on the firewall all comes off the cooler that the petcock is in but can’t get anything to come out when I open it or even take it out 

 

 

im thinking that it’s only cooling part of the system since it seems stopped up 

image.jpg

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1 hour ago, Joey Mack said:

have you pokes a small pick or something up in the hole?  

Yes sir couldn’t get anything in it and didn’t want chance putting a hole in it 

I think I’ll just remove the cooler and see what’s going on 

I price it online 1200 smh lol 

but I know it’ll make a difference in the temp I’m sure it runs around 180 all the time looking at gauge but it’s not cooling the entire motor 

I worked it today put my hand on the radiator hose (bottom) and it’s hot put my hand on transmission lines just warm and the cooler is not hot 

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28 minutes ago, JoeH said:

My '95 is only a 350, doesn't have that trans cooler thing.  Dumb question, is it actually plumbed with coolant or has it been bypassed?  Again, I'm sure that's a dumb question.

No it’s plumbed with coolant 

it has a radiator coming from lower radiator that goes to it 

then another radiator hose off the top that goes to the oil cooler As well 

 

I believe it has 5/6 different hoses that comes off of it 

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Yeah that thing looks like a headache.

Most of our trucks over here run a cooler in front of, or below, the radiator. 

Screenshot_20241113-154500.thumb.png.2f4547126c39a0c8f443244cd39e269e.png

Kinda the same as this. At least there can't be any contamination of fluids if it fails. Easy enough to swap out your one with a piece of pipe and run some hose extension to mount a cooler up front.

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