Question about 1997 Mercury Cougar XR7
I have a book and alot of free advice. BUT what is easiest way to remove heater core? General manual says to undo steering coloum? Yes or no ?I got alot of stuff off, but main frame hard to undo. I cannot see heater core yet.I am a backyard mechanic. trying to help my daugher. 1997 cougarxr7 v8.164,000 runs like a cougar. strong. but cold inside.
Hi and welcome to FixYa,
Just so you know, Mercs are not that common in my country. Being in SEAsia, it is customary that the heater core be either removed or bypassed for imported American vehicles here. Having said this, I am assuming that the reason for the removal and replacement is a leak, otherwise perhaps there is no need to go through with this.
To your concern, I was made to understand that the steering column has to be loosened, the console has to be removed and the dashboard as well, sorry no easier way to go about this that I could squeeze from my source. Additional information that may be of help to you:
Posted on Dec 02, 2008
Heater cores can be easy on some cars, tough on others.
You have the repair manual so thats a good start.
First, those manuals usually cover several models and it may not be acurate. You dont want to undo alot of stuff you dont need to.
First, make sure you actually know where the heater core is. look under the hood where the fire wall is and look for two pipes ( inlet and outlet) from the heater core. They are usually about and inch thick and couple to the cooling lines and go into the engine somewhere.
the inlet/outlet lines you are looking for are usually about 3 to 5 inches apart. Once you locate them and know those are them, that will give you an idea where the actual core will be on the other side.
Im not sure but, it depends on the car, but you may not need to remove the steering column. Usualy the heater core is located behind the dash behind the stereo. and is inside a plastic casing.
When your heater is turned on, the fan blows over the heater core to warm the air that blows into the cabin, so if you follow the air vent from the A/C blower moter, you should eventually find that it goes into a casing and then back out.
That casing has the heater core inside. Its usually held in place with a bolt in clamp on the fire wall side where it comes out and goes to the engine, and you have to remove it before you can dislodge and pull it out from under the dash.
Make sure to organize your screws and bolts and note where they go so you dont have any left over like I did when i changed the one on my 99' Alero :(
Anywho, be carefull removing it, you dont want to bend any of the radiator fins since its Aluminum.
May I ask why you need to replace it? Are you sure its Leaking or cloged? If its leaking, you would have coolant leakage on the floor of the car and in the air duct. Dont confuse this with water built up in the A/C Blower casing that happens if it rains really hard. Mechanics will often miss diagnose that as a leaking Core as Pep boys did woith my alero, which is why i strted working on card my self.
Also, there may be plastic or Metal adapters that connect the heater core lines to the large ones near the engine, be carefull not to crack or break these as they may be hard to find. Usually NAPA has them though.
Now i know this is more advice than an actual answer but anything helps.
Bassically your going to do more removal of plastic from under the dash than anything. Lay the plastic for the ductwork on the ground in a similar patern to the way it goes on so you save time guesing, lay the screws and pushpins with them as well.
Removing the steering column to do a heater core seems unusual as the steering and drive train would normaly take up all the space on that end of the car, the heater core should be behind the radio, low to the floor where it slant up, tucked inside a plastic case that the air duct passes through.
I found that my heater core was alot easier than wht the manual stated, to remove because it was instructions for a 4 cyl engine and mine was a 6cyl, which had more space to work with.
Hope this provides some help or insight.
Posted on Dec 02, 2008
If you have the manual and have had plenty of advice i would follow what the manual says!! After all they don't supply them with the car for nothing, and after having a dig around i recon thats the best idea!!
I will keep looking to try and find an easier way but i suggest you follow the manual for sure, at least you know that you will be mistake free and if you do make a mistake you have the manual to refer to
kind regards and thanks for using Fixya!!!
Posted on Dec 02, 2008
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