Coolant in the cab - Ford Powerstroke Diesel Forum
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post #1 of 19 Old 08-17-2010, 05:25 PM Thread Starter
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Coolant in the cab

I know this is long, but thanks for reading it.


History - Installed Maxx AC mod in the coolant line. A week later I drained, flushed and reflilled the Coolant. Used fleetrite ELC. In the process of doing this I installed a new thermostat, thermostat housing gasket, bypass coolant filter setup, and permanently installed a flushing T in the coolant line.

A week after that, driving down the road and smoke and coolant smell start coming out the vent. I think it's the heater core right away. It goes away. It happens again for 2 minutes and goes away again. I can't get it to do it again no matter whgat setting it is in, no matter what temp, fan speed etc...

Now today I notice a red coolant leak under the truck

I checked ALL my connections I have worked on over the last couple of weeks. Nothing I did is leaking at all. All the way down to the plugs on the block.

I traced the leak up inside the wheel well, and I can't see where it is coming from from outside the truck, but I found coolant on the inside of the truck on the passengers side

It's SOAKED. What is this? I'm going to have to take it apart when have time, but what is it? Just wondering what to expect





Chris

2002 Crew Cab Long Bed
4" BDS, 35x13.50 Cooper STT on 20x10 Black Rockstars, and other stuff.....310,000 miles and counting...
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post #2 of 19 Old 08-17-2010, 06:31 PM
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Sounds like and looks like a heater core to me.

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post #3 of 19 Old 08-17-2010, 06:35 PM
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I had this happen on my chevy heatcore is what it looks like to me

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post #4 of 19 Old 08-18-2010, 12:31 AM
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Yeah that's heater core dude, the coolant heats up and pressure builds, found a way out in the core so once pressure drops it stops leaking, it's going to keep getting worse to where it will just start pouring inside the cab if you continue running it

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post #5 of 19 Old 08-18-2010, 04:11 AM
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I never had it leak in the truck, but on my Bronco, I had a shop do some work on it, and when I got it back, the upper radiator hose was touching the Serpentine belt, and it wore a hole thru, so I kept smelling burnt coolant whenever I'd come to a stop, and then go again.

But, that doesn't look like the problem you're experiencing.

Sorry, useless post.

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post #6 of 19 Old 08-18-2010, 04:27 AM
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Blown head gaskets I'd say

Jk I'd say heater core to good luck man.

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post #7 of 19 Old 08-18-2010, 05:41 PM
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I agree with them. Heater core. Looks just like my truck the THREE times I've had to do my heater core.
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post #8 of 19 Old 08-19-2010, 04:01 PM Thread Starter
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That's what I figured

Anyone got a writeup on fixing it? Is it tough to get to and replace?

Unfortunately I have to run it everyday I hope I can get to this on Sat. Until then I've been putting 185 miles on it a day.

Here's a thought though.....Since I did the MAX AC mod that puts a valve in the coolant hose going to the heater core, I should be able to leave it in the max ac setting all the time and the heater core will be left out of the coolant loop, right?

It seems to slow the flow any way

Chris

2002 Crew Cab Long Bed
4" BDS, 35x13.50 Cooper STT on 20x10 Black Rockstars, and other stuff.....310,000 miles and counting...
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post #9 of 19 Old 08-20-2010, 08:23 AM
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Quote:
Originally Posted by Southpaw View Post
Here's a thought though.....Since I did the MAX AC mod that puts a valve in the coolant hose going to the heater core, I should be able to leave it in the max ac setting all the time and the heater core will be left out of the coolant loop, right?

It seems to slow the flow any way
If it was me, I would put a ball valve in there or somesort of plug. You can get the right parts from the hardware store for a few bucks. I just dont trust that little vac valve.

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post #10 of 19 Old 08-20-2010, 01:44 PM Thread Starter
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Well I got the new heater core today. I'm doing it tomorrow.

Someone who has changed theirs want to chime in with some instructions? Tips? Tricks?

I found a couple half -*** write-ups on doing it, but nothing complete.

Chris

2002 Crew Cab Long Bed
4" BDS, 35x13.50 Cooper STT on 20x10 Black Rockstars, and other stuff.....310,000 miles and counting...
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2 Thessalonians 3 v.6-15

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