Superduty Heater core replacement
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Its Comin Right for us!
Joined: Feb 2005
Posts: 12,161
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From: GA
Superduty Heater core replacement
This is the location of the hard to get at 8mm bolt
Empty glovebox, push in sides and let down out of way
re
Remove box with 8mm bolts, need swivel for bottom two.
Its a bit tricky, theres a hidden slot on too right corner, you have to push door to right and up to get loose , then it comes right out.
Remove vacuum line holder from Bottom
Next the blend door actuator must come out, 2 8mm bolts and a electrical connector
You may have to pry up a bit on the door connector to seperate
Here it is so you can see what you cant before removal
Next comes the mode actuator, two 8mm bolts are obvious
Lay it towards you to remove rod, pretty easy
Old core was not leaking but nearly plugged.
very frustrating the new motorcraft core did not come with new padding, so i had to use a bit of gorilla tape in order to reuse what I was able to remove from the old core.
i found this to be the case with my 89 as well, go figure the chinajunk cores come with foam.
Empty
Remove quick connects, i find works best with hands The remove the holders with small pick Now remove and replace core. Be sure to wrap up to prevent rattling and holes .
Put vacuum control back in first, unless you have an 8mm ratcheting wrench, because there isnt room to back off bolt on right with a socket
Then comes actuator
Socket on rear bolt, hard to get your hands in there to get started. I used a deepwell 1/4” drive socket with no extension
Back together, push vacuum lines back in holders
Logistics Pro
Joined: May 2017
Posts: 4,667
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From: Muskogee, Ok
Thank you for the write up. Reps 
Pictures say so much.
We have a saying on the Corvette forum, to build the vette @ the factory the 1st part they grab to start building the entire car around is the heater core. Glad the job appears doable in less than a full weekend
Pictures say so much.
We have a saying on the Corvette forum, to build the vette @ the factory the 1st part they grab to start building the entire car around is the heater core. Glad the job appears doable in less than a full weekend
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Joined: May 2014
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From: Lake Hartwell, GA
Butt-Head
Joined: Apr 2004
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From: Reed Point, MT
Just a bit of inspiration for those who have never made a career of automotive repair:
When it comes to car/light truck heater core replacement, these Super Duty F250-550s have the easiest and least invasive ones you'll ever get to replace.
When it comes to car/light truck heater core replacement, these Super Duty F250-550s have the easiest and least invasive ones you'll ever get to replace.
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Its Comin Right for us!
Joined: Feb 2005
Posts: 12,161
Likes: 2,639
From: GA
The only thing easier is the 80-96 fords
this took about an hour
the 80-96 the procedure is the same but no actuators to move and no quick disconnects, take about 30 mins
try a jeep grand cherokee! Or 97-04 f150
this took about an hour
the 80-96 the procedure is the same but no actuators to move and no quick disconnects, take about 30 mins
try a jeep grand cherokee! Or 97-04 f150
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