Air Conditioning (AC) System – Civic ’92-95

by NinjaX on June 19, 2010

This air conditioning article applies to all Honda Civic 1992-1995 models.


DO NOT exceed AC system refrigerant oil capacity when servicing system.

Refrigerant Oil
Only NEW, moisture-free refrigerant oil should be used in the air conditioning system. This oil is highly refined and dehydrated so moisture content is less than 10 parts per million. The oil container must be tightly closed at all times when not in use, or moisture from the air will be absorbed into the refrigerant oil.


Discharging System
Discharge AC system using approved refrigerant recovery/ recycling equipment. Always follow recovery/recycling equipment manufacturer’s instructions. After refrigerant recovery process is completed, the amount of compressor oil removed must be measured and the same amount added to AC system.

Disconnecting Lines and Fittings
After system is discharged, carefully clean area around all fittings to be opened. Always use 2 wrenches when tightening or loosening fittings. Some refrigerant lines are connected with a coupling. Special tools may be required to disconnect lines. Cap or plug all openings as soon as lines are removed. DO NOT remove caps until connections of lines and fittings are completed.

Connecting Lines and Fittings
All R-134a based systems use 1/2″-16 ACME threaded fittings. Ensure all replacement parts match the connections of the system being worked on.

Always use a new gasket or “O” ring when connecting lines or fittings. Coat “O” ring with refrigerant oil and ensure it is not twisted during installation. Always use 2 wrenches to prevent damage to lines and fittings.

Placing System in Operation
After component service or replacement has been completed and all connections have been made, evacuate system thoroughly with a vacuum pump. Charge system with proper amount of refrigerant and perform leak test. Check all fittings that have been opened. After system has been leak tested, check system performance.

Most compressors are pre-charged with a fixed amount of refrigerant (shipping) oil. Drain compressor oil from new compressor and add refrigerant oil to new compressor according to amount removed from old compressor. Always refer to underhood AC specification label or AC compressor label while servicing AC system.


  1. Discharge system. Remove compressor from vehicle. Drain oil from removed compressor and measure amount drained.
  2. Subtract the volume of oil drained from removed compressor from 4.0 ounces (4.3 ounces on Prelude), and drain the calculated volume from the NEW compressor. Even if no oil is drained from removed compressor, DO NOT drain more than 1.6 ounces from new compressor.
  3. On Civic and Civic Del Sol, add 1.5 ounces of refrigerant oil when replacing evaporator. Add 0.6 ounce when replacing condenser. When replacing receiver-drier or hoses, add 0.3 ounce per component replaced. Add 0.8 ounce of refrigerant oil if an oil leak occurred.
  4. On Prelude, add one ounce of refrigerant oil when replacing evaporator. When replacing other AC components, add 0.3 ounce per component replaced (including hoses).


  • Civic Compressor Type: Sanden Scroll
  • Compressor Belt Deflection (With 22 lbs. (10 kg) pressure applied to center of belt.)
    • Used: 1/4-13/32″ (6.5-10.5 mm)
    • New: 13/64-9/32″ (5.0-7.0 mm)
  • Compressor Oil Capacity
    • Civic: (2) 4.0-4.7 ozs.
    • Civic Del Sol: (2) 4.0 ozs. (Use SP-10 oil (Part No. 38899-P13-A01)
  • Refrigerant for 1992-1993 Civic (R-12) Capacity: 17.0-21.0 ozs.
  • Refrigerant 1994-1995 Civic (R-134a) Capacity: 17.0-21.0 ozs.

Got questions and comments on the air conditioning system for Honda Civic 1992-1995? Let us know below!

{ 14 comments… read them below or add one }

Doug June 26, 2010 at 9:59 am

I am trying to find out what type of oil is in the a/c system of my ’93 civi lx so it can be converted to r134a from the original r12. Do you know if it is mineral oil or something else?

spartanix June 26, 2010 at 11:05 am

R12 uses mineral while r134a uses PAG oil. Hope this helps.

ronald July 6, 2010 at 9:08 pm

when recharging air con system how much pressure should i put in?

spartanix July 7, 2010 at 9:55 am

If your ac system is completely out of refrigerant then you’d use the whole bottle. Usually it contains just enough to fill the ac.

Mariano July 25, 2010 at 6:24 pm

i got (2) new canisters of refrigerant, which among the two valves is for the refrigerant or “low”and what am i suppose to put on the other one since both of them is not releasing any air when i tried to press the pin.

spartanix July 25, 2010 at 10:29 pm

There should be directions on the canister that tells you what to do. I believe the low side is the blue cap.

Evair Neto February 3, 2011 at 11:32 am

Hi, I’m from Brazil.

A few minutes after recharging my A/C the system throw away all the refrigerant trought a valve located on de driver side. Anyone knows what this can be?


danwat1234 September 26, 2011 at 5:11 pm

Hello, I’m trying to find the Denso 10PA15C compressor that fits my 1999 Honda Civic DX. Is Sanden the AC compressor manufacture for the US, because that is where I am located at. However I really want the Denso piston-type compressor because the milliliters per revolution is nearly twice that of the Sanden.
I have been searching on line and the cheapest I could find was about $250 with a clutch and re-manufactured or new.

I’m going to take a trip to the scrapyard but I doubt I’ll find any Civics with a Denso compressor.

If I ever get one, I’ll mod it to be an air compressor, onboard air for my train horns!

luis September 26, 2011 at 9:12 pm

tengo un honda civic ex donde le pongo el gas para el aire tine dos valvulas enfrente es una de esas o se encuentra en algun otro lado?

Thomas June 13, 2012 at 7:13 am

Do all 1994 Honda Civic’s have the R-134 system in them??

James July 13, 2012 at 1:24 pm

I have a 1995 honda civic ex 1.6l w/vtech. I have replaced the comp, drier, and expansion valve. I am working on my 5 compressor. now I am using a sandon comp, new condenser, evap, expansion valve, and drier. still the same issue as the other 4 comp. high side is 400-450 +
I have flushed the system every time I have worked on it. I am to my whitts end. I just ordered from honda the small liquid line from the condenser to the drier. it looks kinked. please help

JMV October 18, 2012 at 9:13 pm

Ok guys, what is the total amount of pag 46 oil in the entire system of a 95 honda civic dx coupe? Everything its being installed new. All lines flushed and ready to assemble. Just want to make sure i don’t put too much oil in it before I put it all together. Thanks in advanc de.

Ray Garcia October 31, 2012 at 12:48 pm

someone yanked/sabotaged the discharge hose on my 1998 Honda Civic resulting in a light green-like fluid to come out. I bought a replacement hose and ready to change to leaky hose. I’m uncertain however if I should directly proceed in introducing refrigerant into the system? Will removing the old discharge hose affect the vacuum in the compressor? Do I need to vacuum out the compressor if I replace the discharge hose? How can I tell if all the 134As have escaped the system already? Will that hose not pop out if I simply remove the 10mm bolt holding it? Thank you for the help.

andre May 2, 2013 at 9:37 am

hey james that hi side line could be your problem either way it’s not a compressor problem. the only other ting to look at is your condenser fan . is it weak and is the shroud letting any by pass air in . also this will indicate air in the system. do a very good pump down with a good vacuum pump

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