Heater duct problem!

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Feb 27, 2021 | 07:45 AM

#16

Crotchety Ford truck only

Laughing Gas

Joined: Dec 2019

Posts: 863

Likes: 35

From: MA

Quote:

Originally Posted by msta999

I removed the blend door accuator and moved the control by hand and it didn't change anything. Like I mentioned before, there is a TSB for the heater core becoming partially plugged, so when they can drop the truck off, we'll check that...

One would think if passenger side had good heat it would be a directional flow problem. Please keep us informed after dealer visit.

Feb 27, 2021 | 11:56 AM

#17

msta999

Thread Starter

Mountain Pass

Joined: Mar 2002

Posts: 111

Likes: 2

This is the message we are looking at: https://static.oemdtc.com/TSB/MC-10144918-9999.pdf

Feb 27, 2021 | 02:22 PM

#18

Crotchety Ford truck only

Laughing Gas

Joined: Dec 2019

Posts: 863

Likes: 35

From: MA

Quote:

Originally Posted by msta999

This is the message we are looking at: https://static.oemdtc.com/TSB/MC-10144918-9999.pdf

Thanks.................So does the service bulletin apply being out of warranty ? They're going to do it anyway ? Damn diesels.................

Feb 28, 2021 | 12:38 AM

#19

msta999

Thread Starter

Mountain Pass

Joined: Mar 2002

Posts: 111

Likes: 2

This one is out of warranty so no, they won't take care of it, it is up to us.

Sep 16, 2021 | 04:06 PM

#20

msta999

Thread Starter

Mountain Pass

Joined: Mar 2002

Posts: 111

Likes: 2

I finally get this truck back for a couple days! Has anyone come across a problem like this? I am going to back flush the heater core and see what happens, but I'm not holding my breath! I suspect something in the airbox is amiss!

Jan 11, 2022 | 06:00 PM

#21

msta999

Thread Starter

Mountain Pass

Joined: Mar 2002

Posts: 111

Likes: 2

Figured it out, the duct splits at the heater core, the top part goes to the passenger side and the bottom of the heater core goes to the drivers heat side. Tried to make a video of the whole process, but this is all I got!

I had posted the wrong links, these are the correct ones:
https://rumble.com/vs14ag-heater-cor...werstroke.html

https://rumble.com/vs7wv6-heater-cor...ke-part-2.html

Sorry about that.

Feb 18, 2022 | 04:11 PM

#22

msta999

Thread Starter

Mountain Pass

Joined: Mar 2002

Posts: 111

Likes: 2

Had two of these, the first one I replaced the heater core
and it took care of the problem, the second one we used
pulsating hot water back and forth through the heater core,
till there was no more grease coming out. Use a garden hose
for hot water in and a 5 gal bucket to catch what came out,
when the grease stopped showing we put it back together and
it has worked like it should since. We connected a water
nozzle to the hose and just made the water pulsate by
squeezing short blasts of hot water.....anyway it worked.