I am not sure how to articulate this as I’m not a mechanic, but I will try.
1999 NSX-T manual
On two long road trips this year, A/C was blowing ice cold early in the trip, then progressively the fan blower worked less well after about 1 1/2- 2 hours, until so little cool air was coming out that there wasn’t effective cooling.
The first time this happened, on my trip to Mid East Meet, on the advice of others, I purchased a recharge kit. However, when I placed the pressure gauge on the low port, it read as fully charged. I inserted a small amount of refrigerant, just a couple of squirts.
Same difficulty on the way home from Raleigh. 1 1/2 hours of ice cold, then minimal-no blowing air. I could turn fan all the way up to achieve some cooling for a short time afterward, but
Delayed in having AC looked at because of paint issues (long story, now resolved). However, same thing happened on a shorter (250 miles round trip) to Pittsburgh last weekend. This prompted me to get the system looked at by a professional. Unfortunately, Acura dealer with NSX specialist booked out for weeks and I had no time to send car down to Source 1, which I would ordinarily do. I therefore had a local automotive AC specialist take a look last week. No leaks found and compressor was working fine. Long road test (30 miles each way) showed normal function. Was decided based on experience with other Honda compressors to replace because he thought the coil might be going bad. I reluctantly agreed as I was in a hurry for resolution before long road trip to XPO. Big mistake. They had to modify the new compressor by placing the stock pulley/clutch from my old compressor onto the new one. Did this before I was told about it, I would have sourced the correct part.
To add insult to injury, I still have nearly, but not exactly the same problem. I had ice cold A/C for an hour into my trip to XPO, and now absolutely no air movement after that. Was a long, noisy day with the windows down as no working A/C. The difference now is that when I turn the fan all the way up, I have no airflow whatsoever. I can hear a fan on when I turn the fan switch.
If I were at home, I’d simply stop driving the car and have it shipped down to Source 1 to have it looked over by folks who know more about NSXs. Unfortunately, I am on the road now and I’ll have to “grin and bear it”.
I’ll run the CCU self test in the AM. I don’t think this is CCU related, it’s not what’s typically described. I’ll also look at the blower relay.
If anyone has any other ideas after reading this wall of text, I’m all ears. I’ll be at NSXPO track and social days if anyone wants to chat in person.
1999 NSX-T manual
On two long road trips this year, A/C was blowing ice cold early in the trip, then progressively the fan blower worked less well after about 1 1/2- 2 hours, until so little cool air was coming out that there wasn’t effective cooling.
The first time this happened, on my trip to Mid East Meet, on the advice of others, I purchased a recharge kit. However, when I placed the pressure gauge on the low port, it read as fully charged. I inserted a small amount of refrigerant, just a couple of squirts.
Same difficulty on the way home from Raleigh. 1 1/2 hours of ice cold, then minimal-no blowing air. I could turn fan all the way up to achieve some cooling for a short time afterward, but
Delayed in having AC looked at because of paint issues (long story, now resolved). However, same thing happened on a shorter (250 miles round trip) to Pittsburgh last weekend. This prompted me to get the system looked at by a professional. Unfortunately, Acura dealer with NSX specialist booked out for weeks and I had no time to send car down to Source 1, which I would ordinarily do. I therefore had a local automotive AC specialist take a look last week. No leaks found and compressor was working fine. Long road test (30 miles each way) showed normal function. Was decided based on experience with other Honda compressors to replace because he thought the coil might be going bad. I reluctantly agreed as I was in a hurry for resolution before long road trip to XPO. Big mistake. They had to modify the new compressor by placing the stock pulley/clutch from my old compressor onto the new one. Did this before I was told about it, I would have sourced the correct part.
To add insult to injury, I still have nearly, but not exactly the same problem. I had ice cold A/C for an hour into my trip to XPO, and now absolutely no air movement after that. Was a long, noisy day with the windows down as no working A/C. The difference now is that when I turn the fan all the way up, I have no airflow whatsoever. I can hear a fan on when I turn the fan switch.
If I were at home, I’d simply stop driving the car and have it shipped down to Source 1 to have it looked over by folks who know more about NSXs. Unfortunately, I am on the road now and I’ll have to “grin and bear it”.
I’ll run the CCU self test in the AM. I don’t think this is CCU related, it’s not what’s typically described. I’ll also look at the blower relay.
If anyone has any other ideas after reading this wall of text, I’m all ears. I’ll be at NSXPO track and social days if anyone wants to chat in person.
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