A/C Evaporator.
06-30-2018, 08:48 PM
#1
Junior Member
Thread Starter
A/C Evaporator.
Hello I have a 1986 Buick Century Limited with the 2.5L 4 Cylinder. I'm wondering if anyone has changed the AC Evaporator core in this car. Can anyone help me with a link to a video or web site or something, Please.
Thank You in advance
Aaron
Thank You in advance
Aaron
07-01-2018, 02:03 AM
#2
Senior Member
True Car Nut
I'm betting there isn't a video available for this.
I believe you have to take a lot of the dash apart in order to replace the evaporator in this car. Once you replace the evaporator, are you ready to evacuate and recharge the AC system?
What is the original problem that it is having?
I believe you have to take a lot of the dash apart in order to replace the evaporator in this car. Once you replace the evaporator, are you ready to evacuate and recharge the AC system?
What is the original problem that it is having?
07-01-2018, 06:01 AM
#3
Senior Member
Posts like a Supercharger
The heater core is inside on these A-body cars (1982 - 1996), but the evaporator is serviced from under the hood.
I found an old post from an A-body website that claims it is only booked as a 2.5 hour job;
Disconnect battery ground cable, then discharge A/C system.
Remove air cleaner assembly.
Disconnect A/C heater module electrical connectors, then harness straps. Move harness aside.
If equipped, remove heater hose routing bracket and resistor from cover, then vacuum tank.
Disconnect liquid line at evaporator inlet and low pressure line at evaporator outlet.
Dismount alternator and move away from module, if necessary.
Remove evaporator core cover retaining screws (loosen bottom screws only), then remove evaporator core cover.
Remove evaporator core.
Reverse procedure to install.
This is one of the few more routine services that I haven't performed on these cars!
I found an old post from an A-body website that claims it is only booked as a 2.5 hour job;
Disconnect battery ground cable, then discharge A/C system.
Remove air cleaner assembly.
Disconnect A/C heater module electrical connectors, then harness straps. Move harness aside.
If equipped, remove heater hose routing bracket and resistor from cover, then vacuum tank.
Disconnect liquid line at evaporator inlet and low pressure line at evaporator outlet.
Dismount alternator and move away from module, if necessary.
Remove evaporator core cover retaining screws (loosen bottom screws only), then remove evaporator core cover.
Remove evaporator core.
Reverse procedure to install.
This is one of the few more routine services that I haven't performed on these cars!
The following users liked this post:
Soft Ride (07-01-2018)
07-01-2018, 06:08 AM
#4
Senior Member
True Car Nut
Also keep in mind that the AC system should be evacuated by a trusted qualified A/C repair shop.
__________________
1997 Buick Pk Ave (Soft Ride) Suspension!
1997 Buick Pk Ave (Soft Ride) Suspension!
The following users liked this post:
CorvairGeek (07-01-2018)
07-01-2018, 04:21 PM
#5
Junior Member
Thread Starter
I'm betting there isn't a video available for this.
I believe you have to take a lot of the dash apart in order to replace the evaporator in this car. Once you replace the evaporator, are you ready to evacuate and recharge the AC system?
What is the original problem that it is having?
I believe you have to take a lot of the dash apart in order to replace the evaporator in this car. Once you replace the evaporator, are you ready to evacuate and recharge the AC system?
What is the original problem that it is having?
The following users liked this post:
CathedralCub (07-02-2018)
07-01-2018, 04:26 PM
#6
Junior Member
Thread Starter
The heater core is inside on these A-body cars (1982 - 1996), but the evaporator is serviced from under the hood.
I found an old post from an A-body website that claims it is only booked as a 2.5 hour job;
Disconnect battery ground cable, then discharge A/C system.
Remove air cleaner assembly.
Disconnect A/C heater module electrical connectors, then harness straps. Move harness aside.
If equipped, remove heater hose routing bracket and resistor from cover, then vacuum tank.
Disconnect liquid line at evaporator inlet and low pressure line at evaporator outlet.
Dismount alternator and move away from module, if necessary.
Remove evaporator core cover retaining screws (loosen bottom screws only), then remove evaporator core cover.
Remove evaporator core.
Reverse procedure to install.
This is one of the few more routine services that I haven't performed on these cars!
I found an old post from an A-body website that claims it is only booked as a 2.5 hour job;
Disconnect battery ground cable, then discharge A/C system.
Remove air cleaner assembly.
Disconnect A/C heater module electrical connectors, then harness straps. Move harness aside.
If equipped, remove heater hose routing bracket and resistor from cover, then vacuum tank.
Disconnect liquid line at evaporator inlet and low pressure line at evaporator outlet.
Dismount alternator and move away from module, if necessary.
Remove evaporator core cover retaining screws (loosen bottom screws only), then remove evaporator core cover.
Remove evaporator core.
Reverse procedure to install.
This is one of the few more routine services that I haven't performed on these cars!
07-01-2018, 04:53 PM
#7
Junior Member
Thread Starter
Thanks. This info is almost word for word what'* found in the Chilton'* manual. Problem I'm seeing is that the engine appears to be in the way of that type of removal. I will get some pics and try to post them. I think the above person who said dash removal seems to be the more realistic way
07-02-2018, 06:55 AM
#8
Retired
Certified Car Nut
Let us know what the issue was.
Also, please use something descriptive for post titles. Simply using "Help please" doesn't work, thanks.
Also, please use something descriptive for post titles. Simply using "Help please" doesn't work, thanks.
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
07-02-2018, 08:55 AM
#9
Junior Member
Thread Starter
Evaporator Core
07-02-2018, 04:46 PM
#10
Senior Member
True Car Nut
Yes, I believe the evaporator is accessed from the engine compartment......not that bad a job...
Obviously, the whole system has been exposed to dirt/moisture....a flushing may be necessary....
Was this already converted to 134a or is it still R-12? That can open another can of worms.....
Obviously, the whole system has been exposed to dirt/moisture....a flushing may be necessary....
Was this already converted to 134a or is it still R-12? That can open another can of worms.....