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Posted on Dec 23, 2010
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How can i get to my heater core to replace it on a 86 cadillac fleetwood 5.0

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  • Cadillac Master 1,420 Answers
  • Posted on Dec 23, 2010
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Joined: Dec 24, 2009
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BROUGHAM

1. Disconnect electric-al connectors at blower motor, compressor cycling switch, power

module and radio lead-in connections.

2. Remove righthand windshield washer nozzle.

3. Remove righthand secondary air inlet screen from plenum.

4. Partially remove rubber molding above plenum.

5. Remove remaining screws and the primary inlet screen.

6. Remove blower motor.

7. Remove two screws securing compressor cycling switch to module and position

switch out of way.

8. Remove AC module cover attaching screws and the cover.

9. Disconnect heater hoses at heater core.

10. Remove screw and retainer holding heater core to frame top.

11. With temperature door in max. hot position, reach through temperature housing and

push lower forward comer of heater core away from housing, then rotate core

parallel to housing.

12. Remove heater core.

13. Reverse procedure to install.

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Related Questions:

0answers

I have a 1987 Cadillac Fleetwood D'elegance and when the car is warm hardly any heat comes through the defrost or floor vents. The fan /blower sounds like it's working.
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Be the first to answer Nov 28, 2015 • Cadillac Cars & Trucks
0helpful
1answer

1995 Cadillac Fleetwood not getting any heat.
is your car running at normal temperatures? possibly bad heater core. the flaps that direct the air flow in the vents may not be working properly. and has it always had this problem you may want to see if someone has bypassed the heater core there are two coolant lines going into your firewall right next to each other. sometimes when the heater core goes bad people will do this to get by but if youve had heat before than this off course would not be the problem
Read full answer
Nov 19, 2011 • 1995 Cadillac Fleetwood
0helpful
2answers

Trying to replace the heater core on a 92 cadillac fleetwood where is it located
Inspect/Replace If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.
Read full answer
Nov 21, 2010 • 1992 Cadillac Fleetwood
0helpful
1answer

Very little heat inside the car. Top hose leading into the heater core is hot, bottom hose leading out is just warm. Is there a valve (solenoid controlled??) inside the heater box, or should I be trying...
I would flush the core first.
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Nov 15, 2010 • 1990 Cadillac Fleetwood
7helpful
2answers

Firing order for 1989 cadillac fleetwood
For the 1989 Cadillac Fleetwood:
I do not know if you have the Fleetwood Brougham with the 5.0L V8, or the Fleetwood FWD (Front Wheel Drive) with the 4.5L V8; however I have included both below.

For the Fleetwood Brougham 5.0L V8:
Firing Order:
1-8-4-3-6-5-7-2
Cylinders:
......(back)......
|..8............7..|
|..6............5..|
|..4............3..|
|..2............1..|
......(front)
Distributor:
......(back)
.....8.....1
4..............2
3..............7
.....6.....5
.....(front)

For the Fleetwood FWD (Front Wheel Drive) 4.5L V8
Firing Order:
1-8-4-3-6-5-7-2
Cylinders:
..........(back)..........
|...2....4....6....8...|
|.........................|
|...1....3....5....7...|
..........(front)
Distibutor:
......(back)
.........4
..3...........8
6.................1
..5...........2
.........7
......(front)

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!
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May 19, 2010 • 1989 Cadillac Fleetwood
0helpful
4answers

No heat cadillac 1990 fleetwood new water pump and thermostat no vacuum leaks either
flush your system the heater core may be clogged hope this helps
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Jan 16, 2010 • 1992 Cadillac Fleetwood
0helpful
1answer

89 cadillac fleetwood no heat bled rad still none
The heater core may be stopped up and it can be backe flushed or temperature door actuator or clip is broken
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Jan 05, 2010 • 1989 Cadillac Fleetwood
0helpful
1answer

Heater core
I,M HAVING TROUBLE REMOVING THE COVER PLATE FROM THE HEATER CORE.
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Mar 30, 2009 • 1995 Cadillac Fleetwood
0helpful
1answer

Heater Core Replacement
first locate the hoses on the firewall that go to the heater core. lucky scenerio is that there is an a panel you can remove to take out the heater core.. you will see it.... second option is that the venting is split and either held on by clips or screws.... remove them... pull down the half of the vent housing and pull it out that way.... worst case scenario... mostly with ford products is that you have to remove the dash to change it....


Robert
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Sep 24, 2008 • 1992 Cadillac DeVille
0helpful
1answer

Heater core leaking
We found out that you do not have to pull the dash out to replace the heater core. Thanks for you follow up
Read full answer
Aug 05, 2008 • 1994 Cadillac Fleetwood
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I have a 1987 Cadillac Fleetwood D'elegance and when the car is warm hardly any heat comes through the defrost or floor vents. The fan /blower sounds like it's working.

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