Cadillac Owners Forum banner

1 - 10 of 10 Posts

·
Registered
Joined
·
14 Posts
Discussion Starter #1
As many of you know, the heater core is on the dash side
of the firewall. Big $ to pull the dash and change the core.
Might there be a cleaver way to do the job from the engine
side that the manual didn't anticipate.
If the bold is cut that holds the core in place, can the core
be pulled thru the air mix door opening?
I'm even thinking of cutting an access panel from the engine
side if I have to.
It burns me up that these cars were made this way,
so hard to service in this respect. Its seems to me SUCH a
bad idea to bring the hot engine coolant into the passenger
side of the car.
Thanks!
 

·
Registered
2005 CTS-V, 1994 Infiniti Q45
Joined
·
7,658 Posts
I wouldnt want to be cutting holes in the firewall, if thats what your wondering......

Unfortunately, I dont know enough to answer your question..... Maybe one of the classic caddy guys can help...!
 

·
Registered
Joined
·
14 Posts
Discussion Starter #3
elwesso said:
I wouldnt want to be cutting holes in the firewall, if thats what your wondering......

Unfortunately, I dont know enough to answer your question..... Maybe one of the classic caddy guys can help...!
--------------
Thanks for the warning. Yes cutting the firewall is what I was entertaining. Radical, but seems like a good alternative to
taking the dash off to take off the heater case.
There are holes thru the fire wall underneath the blower case, so
I don't see why not. A metal panel could be fashoned to cover
the hole.

I can't believe they built this thing like this. The designers
should be completely ashamed. The core
could have been secured to a panel removeable by the engine
side.

The procedure reads:
1. drain radiator.
2. remove heater hoses from heater core
3. Remove instrument panel as described in section 8C (YIKES!)
4. Remove defroster nozzle by removing four screws to cowl and one screw at the heater case. (I do not know what the defroster nozzle is, it is not pointed out in the diagrams)
5. disconnect vacuum hoses to the programmer and vacuum actuators. (The diagrams do not show me the programmer)
6. Disconnect electrical connector at the programmer, disconnect air mix door like at the porgrammer.
7. Working underhood, remove for nuts securing heater case to cowl.
8. Working under dash, revoe one screw securing heater case to cowl.
9. Remove heater case and remove for screws securing cast to core. Remove heater core.
 

·
Registered
2005 CTS-V, 1994 Infiniti Q45
Joined
·
7,658 Posts
I think its up to you.... I suppose if you could put a new metal piece back in, it wont hurt anything...... Im more worried about the structural integrity.... Cutting it could really mess things up.... But if you dont have a fire and dont get in a wreck, then your golden!!!

Again, its your call.....
 

·
Registered
Joined
·
14 Posts
Discussion Starter #5
elwesso said:
I think its up to you.... I suppose if you could put a new metal piece back in, it wont hurt anything...... Im more worried about the structural integrity.... Cutting it could really mess things up.... But if you dont have a fire and dont get in a wreck, then your golden!!!

Again, its your call.....
----------
Them's big IFs!
I'm not sure at this point, even if I got to the core
through the fire wall, that I could get the core off
of the heater case. I don't know where the screws
are in step 9 "securing the core to the heater case".


DC
 

·
Registered
2005 CTS-V, 1994 Infiniti Q45
Joined
·
7,658 Posts
Yeah.... you might not even be able to get to em from that way...... They tell you to undo the dash and the screws are probably facing you as you open it up......

I have a feeling by trying to take a shortcut like this your gonna make an even bigger job!!!
 

·
Registered
Joined
·
14 Posts
Discussion Starter #7
Exactly. Probably facing the other way is right.
I still could possilbly drill them out if I knew where they
were. Looking a a new heater core would tell me where the
screws are.

I won'tt start down this path until I talk to someone who has
been in there.
 

·
Registered
2005 CTS-V, 1994 Infiniti Q45
Joined
·
7,658 Posts
Does www.helminc.com offer a FSM for your car...... Id go down that route first!! The FSM is the only way, IMO....
 

·
Registered
2005 CTS-V, 1994 Infiniti Q45
Joined
·
7,658 Posts
Factory service manual, IE not from chiltons or haynes......
 
1 - 10 of 10 Posts
Top