HELP!!!! Converting R12 to R134 A/C System?
Originally Posted by NeverBX
to convert it just go to your local auto parts store and get the converter kit. i think its like 30-40 bux or something.
yeah I don't get any cool air, so I don't have any refrigerent.
edit - can I just use this?
http://www.jcwhitney.com/webapp/wcs/...&storeId=10101
edit - can I just use this?
http://www.jcwhitney.com/webapp/wcs/...&storeId=10101
Originally Posted by KeepinOnThaDL
yeah I don't get any cool air, so I don't have any refrigerent.
edit - can I just use this?
http://www.jcwhitney.com/webapp/wcs/...&storeId=10101
edit - can I just use this?
http://www.jcwhitney.com/webapp/wcs/...&storeId=10101
a friend of mine used that kit on his car. it was easy to install but the only thing is that the car didnt really cool as good as when it had r12.
Originally Posted by KeepinOnThaDL
how can you tell if you have R12 or R134? i have 93 lx
I believe they have a A/C recharger kit for $35. Well thats what I got at my local Target store. It comes with 3 bottles to refill the good stuff plus the adapter to convert and a gauge so you don't over fill and a cd video so you don't mess up.
Converting R-12 A/C Systems to R-134a
BACKGROUND
Because of environmental concerns, production of R-12 refrigerant is being phased out. Honda is making retrofit kits available to convert systems that currently use R-12 refrigerant to R-134a refrigerant use.
VEHICLES AFFECTED
ACCORD:
1986 - 89 - With Nippondenso compressor only
1990 - 93 - All
CIVIC:
1985 - 87 - With Sanden compressor only
1988 - 91 - With Sanden compressor only
1992 - 93 - All
PRELUDE:
1990 - 92 - With Sanden compressor only
PREPARATION
Before retrofitting the A/C system to use R-134a, test its performance and inspect all components.
^ If the system is not cooling correctly, determine the cause (restriction, refrigerant leak, system contamination, etc.) and repair it before continuing.
^ If the system is not fully charged, determine if there are any leaks and repair them before continuing.
^ If the compressor is making noise, repair or replace it before continuing. Refer to Parts Information Bulletin A95-0005 for the proper components.
^ If the system has been open to the atmosphere, replace the receiver/dryer.
PARTS INFORMATION
R-134a retrofit kit A:
1988 - 93 Accord
P/N 38020-SM4-A1AH, H/C 4729828
1986 - 87 Accord
P/N 38020-SM4-A2AH, H/C 4729836
1988 - 93 Civic
P/N 38020-SM4-A1AH, H/C 4729828
1985 - 87 Civic
P/N 38020-SM4-A2AH, H/C 4729836
1990-92 Prelude
P/N 38020-SM4-A1AH, H/C 4729828
Receiver line "A" for 1990 - 91 Accord:
P/N 80341-SM1-A18, H/C 4052049
RETROFIT KIT INSTALLATION
1. Use the R-12 recovery/recycling station to remove the R-12 from the system.
Note Failure to remove all the R-12 from the system will cause contamination of the R-1 34a recovery/recycling station.
2. Disconnect the R-12 recovery/recycling station.
3. 1990 - 91 Accord only: Inspect receiver line "A." If the charge valve is fitted to a block and points toward the alternator, installing the retrofit valve will leave insufficient clearance. Install a new receiver line "A" (see PARTS INFORMATION) with the charge valve mounted in the line.
4. Use a shop towel wetted with Honda brake cleaner to clean the threads on the existing valves. Apply Locktite (included in the kit) to the threads of the existing valves. Install the R-134a retrofit valves from the kit.
5. Connect the R-134a recovery/recycling station to the system. Evacuate the system.
6. Add 120 ml of PAG oil (included in the kit) to the system.
7. Determine the amount of R-134a refrigerant needed to charge the system by subtracting 50 ml (1-2/3 oz) from the system's R-12 capacity.
8. Charge the system with the proper amount of R-134a refrigerant.
9. Start the engine and let it idle. Turn the A/C system on and off several times. Listen for any abnormal noises.
10. Repeat step 9 with the engine running at 1,500 rpm and 3,000 rpm.
11. With the system on, check the cooling performance at the dashboard vents.
12. Check the high and low side pressures and compare them to the R-12 specifications. They should be slightly higher.
13. Turn off the A/C system and the engine. Disconnect the recovery/recycling station. Install the caps on the valves.
14. Place the R-134a caution label from the kit over the existing R-12 label. If the R-12 label is no longer there, place the R-134a label on the right damper housing.
BACKGROUND
Because of environmental concerns, production of R-12 refrigerant is being phased out. Honda is making retrofit kits available to convert systems that currently use R-12 refrigerant to R-134a refrigerant use.
VEHICLES AFFECTED
ACCORD:
1986 - 89 - With Nippondenso compressor only
1990 - 93 - All
CIVIC:
1985 - 87 - With Sanden compressor only
1988 - 91 - With Sanden compressor only
1992 - 93 - All
PRELUDE:
1990 - 92 - With Sanden compressor only
PREPARATION
Before retrofitting the A/C system to use R-134a, test its performance and inspect all components.
^ If the system is not cooling correctly, determine the cause (restriction, refrigerant leak, system contamination, etc.) and repair it before continuing.
^ If the system is not fully charged, determine if there are any leaks and repair them before continuing.
^ If the compressor is making noise, repair or replace it before continuing. Refer to Parts Information Bulletin A95-0005 for the proper components.
^ If the system has been open to the atmosphere, replace the receiver/dryer.
PARTS INFORMATION
R-134a retrofit kit A:
1988 - 93 Accord
P/N 38020-SM4-A1AH, H/C 4729828
1986 - 87 Accord
P/N 38020-SM4-A2AH, H/C 4729836
1988 - 93 Civic
P/N 38020-SM4-A1AH, H/C 4729828
1985 - 87 Civic
P/N 38020-SM4-A2AH, H/C 4729836
1990-92 Prelude
P/N 38020-SM4-A1AH, H/C 4729828
Receiver line "A" for 1990 - 91 Accord:
P/N 80341-SM1-A18, H/C 4052049
RETROFIT KIT INSTALLATION
1. Use the R-12 recovery/recycling station to remove the R-12 from the system.
Note Failure to remove all the R-12 from the system will cause contamination of the R-1 34a recovery/recycling station.
2. Disconnect the R-12 recovery/recycling station.
3. 1990 - 91 Accord only: Inspect receiver line "A." If the charge valve is fitted to a block and points toward the alternator, installing the retrofit valve will leave insufficient clearance. Install a new receiver line "A" (see PARTS INFORMATION) with the charge valve mounted in the line.
4. Use a shop towel wetted with Honda brake cleaner to clean the threads on the existing valves. Apply Locktite (included in the kit) to the threads of the existing valves. Install the R-134a retrofit valves from the kit.
5. Connect the R-134a recovery/recycling station to the system. Evacuate the system.
6. Add 120 ml of PAG oil (included in the kit) to the system.
7. Determine the amount of R-134a refrigerant needed to charge the system by subtracting 50 ml (1-2/3 oz) from the system's R-12 capacity.
8. Charge the system with the proper amount of R-134a refrigerant.
9. Start the engine and let it idle. Turn the A/C system on and off several times. Listen for any abnormal noises.
10. Repeat step 9 with the engine running at 1,500 rpm and 3,000 rpm.
11. With the system on, check the cooling performance at the dashboard vents.
12. Check the high and low side pressures and compare them to the R-12 specifications. They should be slightly higher.
13. Turn off the A/C system and the engine. Disconnect the recovery/recycling station. Install the caps on the valves.
14. Place the R-134a caution label from the kit over the existing R-12 label. If the R-12 label is no longer there, place the R-134a label on the right damper housing.


