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The truck dash panel has to be removed along with the steering wheel and steering column to access the plenum box. The plenum box then has to be removed to get to the heater core. This requires evacuating the AC system, draining the radiator, disconnecting all lines and removing the box. Replacing the heater core is simple when you get to this point.
If the problem is lack of heat(not a physical leak), the problem is more likely with the blend doors on the F150. This is a very common fail mode. HeaterTreater has a line of products to address the issue at a low cost. Follow my user name to my Bio Page for more information. ford4me
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How do you change heater core in 98 suburban?
how to change heater core in 98 suburban
How do you change a heater core in an 98 intrigue?
You will need to remove the water supply hoses from your 1998 Oldsmobile Intrigue heater core. Remove the heater core retaining bolts. Reverse the process to install your new heater core.
Heater core removal 98 Buick lesabre?
How do I replace heater core on 98 Buick lesabre
Replace 98 Cadillac DeVille heater core?
How do I replace the heater core in my 98 cadillac deville
How do you replace a heater core on a 93 olds 98?
how do you replace a heater core in a 91 Oldsmobile 98
How to change 97 integra heater core?
i am tryin to do the same thing on a 98 gsr
How to replace heater core on 98 lumina?
Remove the water supply hoses to your 1998 Chevy Lumina heater core. Remove the heater core retaining bolts. Reverse the procedure to install the new heater core.
Were is the heater core on a 98 Cadillac Fleetwood rwd?
There was no rwd Cadillac Fleetwood in '98
How do you replace the heater core in a 98 eclipse?
Take it to a mechanic.
Where is the heater core on a 98 Monte Carlo?
Under the dash
How do you change a heater core in a 1997 gmc sonoma?
go to autozone.com. and click on the heater core part for your sonoma. then there should be an install manual button u click on on the page. i have a 98 gmc wit a heater core out also. i think the 97 models you just have to take off the dash.
What are the signs of a bad heater core in 98 ford expedition?
The most common signs of a bad heater core are; no heat or fluid leaking into the passenger compartment. The heater core can have a leak or it can be plugged.
