1990 Honda Accord AC not blowing cold

1990 HONDA ACCORD
70,000 MILES • 4 CYL • 2WD • AUTOMATIC
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NICKL
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On my 90 accord, the ac stopped delivering cold air last week. It was the original R12 refrigerant. I assumed that it needed a charge after 25 years. Compressor turns but air is warm. I pumped it down, added die to detect leak, added compressor oil and recharged with R134A. Owners manual calls for 34oz. I put in about 34oz if you can really empty the 12 oz cans that are available. still have same problem. Gauges read correctly for outside temp. Low= 45 , high = 150. Not knowing a lot about ac systems, I thought if the gauges read correctly compressor was functioning correctly. Is that a good assumption? Not sure if I should add a little more refrigerant or look somewhere else? any help would be appreciated.
May 17, 2015 at 7:16 AM
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HMAC300
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when adding r13a to a r12 system it takes 80% of r12 load. this can be the blend door or heater valve if you have one making it not cool. so check other stuff first.
May 17, 2015 at 9:01 AM
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NICKL
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Thanks, Will check blend door. On your heater valve comment, I'm assuming there is a valve activated when the temp lever is somewhere other than cold? Is that correct, and any idea where I can find pix or wiring diagrams...
Thanks again for your help. BTW. I do notice the vent above the evaporator is consistently colder that the other vents, Not a lot be noticeable.
May 18, 2015 at 7:56 AM
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NICKL
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I was able to find all the info I need.. No need to reply, I will let you know what I find...
May 18, 2015 at 8:19 AM