Find the high and low service ports for the R12 air conditioning system. 130 posts · Joined 2009. The old ones will work but will seep over time and may require recharging every couple of years. As a review, here is a breakdown by model: CCOT systems (GM-type) 240 1991-1993 ONLY; 740 1988- (unable to verify, should be all 740 models); 760 1988- (unable to verify, should be all 760 models); 940 all; 960 all; S90/V90 all. compressor. Typically the AC recharge kit you buy will have enough capacity to add enough freon to get the AC. There is only one Freon, and that is R12. R134a usage in a cost effective manner. I recommend getting an o-ring kit and replacing all the o-rings. What I do is to let the vaccuum pull the oil in the low side and allow the refidgerate to push the oil into the system on the high side. I am working on a S-10 air conditioner. Figure 1 This great starter A/C kit from Interdynamics contains three cans of R134a refrigerant and oil and is specifically designed to replenish older cars that may have a few small leaks in the O-rings of the air conditioning system. In addition to cooling, freon lubricates the compressor when it runs. Then, remove the connector and place your charging kit in a safe location. Connect the low-side hose to the low-side port of the system. Steps for conversion: -Get the system drained at a shop if it hasn't already leaked everything out. AC Pro Car Air Conditioner Synthetic R134A Refrigerant, AC Recharge Kit with Hose and Gauge, 20 Oz, ACP200. When your compressor kicks on, add freon to the correct pressure. I have a 1993 Silverado Extended Cab w/5. HaPtOAD · #9 · May 11, 2009. R134A is slightly less efficient than R12, but not enough to make any noticeable difference aside from the slightly higher evaporator pressure temperature. R134a has a high GWP (global warming potential) of 1430. Once you find the 2001 Astro AC low pressure port cap, hook up the can of refrigerant to the low pressure port. remove old shrader valves. Make: Chevy. . runs about $130. After doing the final step, make sure that everything works well and you are good to go. jerryparks. Install all the other components, install the adaptor fittings on the service ports. Automobile manufacturers began to transition to the non-ozone depleting refrigerant, HFC-134a, with 1992 model year vehicles. The leak detection is best done with a UV light and UV dye. biggs » Thu Apr 29, 2010 10:36 pm. The orifice tube should be replaced any time A/C service work is performed. I need to replace the AC high pressure cutoff switch that mounts in the compressor. no leaks system held for 30 minutes. Even if the system leaks, repairing the leaks and recharging it with R-12 is usually the best repair alternative. At least it's like that here in TX. You need to open the engine compartments. I will also flush the system and add R134. For conversion of R12 to R134a. Following the instructions on the refrigerant package, add refrigerant to the system. The R134A charge should be 85% of the recommended R12 charge and will produce evaporation temperatures about 3F higher than R12 at the same pressure. And the reason goes something like this; r134a is actually a more efficient refrigerant, BUT it is designed to operate at a higher pressure than r12 and an r12 compressor simply won't develop high enough. Finally, add the new R134a oil, evacuate and recharge with r134a. FAQs About R134a. With the current EC Directive 2006/40/EC it was decided to only use refrigerants with a GWP of less than 150 in the future. This is my most precious wife's 1985 Corvette that the compressor had failed and put metal in the system so I did a complete flush and installed a new Four S. If the vehicle is manufactured after 1995, then more than likely it will take R134a. They say if a little bit of R12 and R134A mix it shortens the life of the A/C compressor and it won't work correctly anyways. Shop air too often has moisture in it. I'd try getting one of the R12 replacement refregerants. R-134a can remove more heat than R-12. The components in the A/C. This listing should only be used as a guide to give some indication, clue or idea of the possible refrigerant charge required for the system. Open the engine compartment of your vehicle. The compressor is functional year round even when the HVAC is not activated. A DuPont R-134a refrigerant. Is converting my 91 Civic to R134a a good idea? And if so what all do you have to do to convert it. Note: As of January 2018, R1234yf and R134a requires the tech name, ASE certification number and Parts Dealer Code to groupaftersales@kemkrest. 2. When your compressor kicks on, add freon to the correct pressure. # 3. Ships from and sold by B and S Supply. A/C will be addressed later in this article. There is NO reason to retrofit a vehicle to R-134a as long as the R-12 system is cooling properly and contains a normal charge of refrigerant. Jun 1, 2015. 1°C (213. This is the hearsay in Michigan. 9 inches is recommended and will vaporize any moisture in the system while also purging any air from the A/C system. Replace any o-rings with 134a compatible. Reply Like. Join Date:. 3. Ford Escort 1991, A/C Refrigerant Discharge Hose by UAC®. The compressor is located in the engine compartment and is belt-driven by the engine. The following information should be used for guidance when retrofitting vehicle air conditioning systems from R–12 to R134a refrigerant. . R22, also known as hydrochlorofluorocarbon 22 (HCFC-22), is a refrigerant responsible for absorbing and removing heat from your air conditioner, heat pump, and car air conditioning system. DO NOT USE COMPRESSED AIR TO PRESSURE TEST OR LEAK TEST THE UNIT OR VEHICLE AIR CONDITIONING SYSTEM. I figure it'll be around a while. Oct 31, 2015. The AC has never blown cool, but the compressor seems to function as it cycles on and off when I turn the AC on. Replace Cap - Replace the AC low pressure port cap. I am wondering if it needs coolant and if so,. It is also ideal for some late vehicle model imports. My factory air conditioner began robbing my car of power, like an electrical problem, and I could hear a ticking in my radio *as if spark plug wires were not isolated". If your vehicle has a Ford FX-15 compressor, replace with an FS-10. Take the vehicle to a repair shop licensed for A/C work that can evacuate the system of R-12 and recover it properly. – 28. With the current EC Directive 2006/40/EC it was decided to only use refrigerants with a GWP of less than 150 in the future. So, recover the R-12. 0. 12v. 00. These physical properties contribute to its excellent performance in various cooling and refrigeration systems. Jumper low-pressure cutoff switch (next to left headlight) Hook up R134 can to hoses (purge air from line) This is a good time to add oil, if needed. Ford’s most recent models, which date from 1994 to the present, employ R134a in their air conditioning systems. Car air conditioner retrofit with HFC-R134a From $350. Once you find the 1993 Previa AC low pressure port cap, hook up the can of refrigerant to the low pressure port. 90% of the original R12 charge quantity e. The A/C accumulator is the refrigerant reservoir, and houses the desiccant which removes moisture in the refrigerant. To tell if it has been converted you can look for a sticker on the unit under the hood, which would indicate that it is R134a. Compared to a typical R-12 service procedure, only three additional steps are needed to convert to R-134a. I will buy the Sanden SD7H15 Model No. Follow the instructions, I bet you will have AC for a year, and maybe forever. each) so that is what I used. Garage. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. The biggest problem is the difference in the oils used in R12. it's a little more to it than that. Replace this hoses if that is the case. $31. Cherokee Discharge Hose R-134a - Discharge Hoses. 811 posts · Joined 2011. New drier, new compressor and orifice tube a good flush, good. 00 plus tax at Walmart. If you are in doubt about whether or not your Air Conditioning System has been changed from R12 Freon to R134a Freon, this guide should help you figure it out. . Also, because R134a is a smaller molecule that R12, it is more likely to leak out of the system than. Ozone depleting refrigerant with a GWP of 10,900. Minimum Requirements for converting a car with a Hot Gas Valve to R134a. R134a charging adapter = $13 (I cut mine up to use it with the R12 gauge set that I have had for a long time). Location: Texas. If your vehicle is older you may still have R134a; it just depends on if it has been converted. There's also several links at that site to other information regarding auto air conditioning. To ensure the right charge, you must fill the new system with between 75 and 85% of the factory-set capacity for optimal cooling. It was discovered that R-12 contains CFC, or chlorofluorocarbons, which destroy the ozone layer. A new comp. Charge the System. Charging – Charge the A/C system with R134a to approx. Stage 1: A/C Compressor Upgrade Kits – Our easy-to-install high performance rotary compressor upgrade kits will not only help you solve and. 25 lbs of R12 refrigerant. One key to the use of R-134a is the amount to use. If the plenum temperature is below 20 C and or if the air flow is restricted the evaporator core will freeze up. To meet the environmental requirements, the air-conditioning system of an electric vehicle is chosen as the research object. To "compensate" for this, R-134a systems have a different type of condenser, components, and operating pressures. 9 liter A/C not working, bad compressor. About 10-12 years ago I took my factory AC truck to my local AC shop were they evacuated the system, changed the fittings, pull a vacuum, and recharged it with the proper oil and 134. 1985 Coupe-L98/Auto,Bright Red/Carmine. The cost per pound works out as follows: R-134a at $4, R. The main difference between the two is that R12 is the amount of time they remain. Normally, a conversion either R12-to-R134 or R134-back-to-R12 I recommend at least 2 flushes )and if you have a real good guy he might squeeze in 3) . A parallel flow condenser is required for R-134a. Put on a pair of safety glasses and work gloves. This cooling agent ensures that your ride's AC system is working properly. When your compressor kicks on, add freon to the correct pressure. The "Low Side" fitting is located on the side of the AC accumulator. Keepin’ Cool has invested in equipment to allow a specially developed R12 replacement gas used known as HFC-R134a and also has already carried out many conversions to a range of vehicles, like including: 1988 Volvo 240. Start the engine, lower the windows, and switch on the air conditioner to its maximum-cold setting. #9 · May 11, 2009. Automotive Air Conditioning Information Forum (Archives) Provided by. This kit allows you to convert yourA/C system from R-12 to. The $500 is about the same as what it would have cost me to replace the same parts and pay someone to charge it back up with 3. Re: Converting aircon on 1993 XJ from R12 to R134a. We provide model specific & custom built kits to upgrade your compressor or your entire system. An E30 R-12 system has a tube and fin type condenser, as most R-12 systems. Interdynamics Certified A/C Pro Car Air Conditioner Adapter Kit, Complete AC Conversion Adapter Kit Converts R12 to R134-A Refrigerant, Includes 1 Low Side Port, 3 High Side Ports and Retrofit Label 4 Pieces 6015 R134A Brass Refrigerant Tank Adapter to R12 Fitting Adapter 1/2 Female to 1/4 Male Flare Adaptor Valve Core and 6014. Unlike R-12, this refrigerant has less environmental impact. We installed air conditioner when taking trips to car shows per wifes orders. The high port side is the one with the small hose. Crack open the low-side valve on the gauge set just long enough to purge the air, but not long enough to release propane. The gas has temp/ pressure characteristics that are different than R12. If like me you didn't buy the Bmw kit, buy the new capacity R134a label 8-363-255-9 : Refill procedure in the driveway: 1. . Toyota Master Diagnostic Technician. All I did was replace: All the O-rings, Accumulator, Orifice tube/expansion valve. 1990 F150 AC 134a Conversion. Start the vehicles engine. The cooling seems to be as good or better than the original R-12. 10587 posts · Joined 2005. COM. because the molecules are smaller. Due to the increasingly scarce availability and 1995 production phased of refrigerant R12, models using Nippondenso,. FREE delivery Thu, Oct 26 on $35 of items shipped by Amazon. The refrigerant would soon replace R-22 in the new HVAC equipment. The. The $500 is about the same as what it would have cost me to replace the same parts and pay someone to charge it back up with 3. Since R134a is lighter than R12 , the system must be charged between 75 and 85% of its factory-set capacity to function properly. The air conditioning system in your car is compromised of a compressor, condenser, expansion valve, receiver/drier and evaporator. So the steps involved are cleaning out the old oil, replacing all the O-rings, replacing the dryer, replacing the expansion valve, and converting the high and low side connectors from Schrader to quick connect valves.