If there is a blockage in the system who ever serviced it should have been able to tell by the system pressures. I have never heard of a bad expansion valve. Are you sure the compressor clutch is kicking in?
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A/C is cold only while driving.
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If there is a blockage in the system who ever serviced it should have been able to tell by the system pressures. I have never heard of a bad expansion valve. Are you sure the compressor clutch is kicking in?
Have you performed the Climate Control Unit's self diagnostic test?
It's on page 22-12 and 22-13 of the service manual found on this site in the Wiki.
This is a good place to start if you want to diagnose your vehicle's a/c problem.
This section of the manual has some other tests and flow sheets that will also help you to narrow down the possibilities.
If you properly diagnose your car's problem you won't be replacing parts you don't need and you won't repair that which is not broken.
It's on page 22-12 and 22-13 of the service manual found on this site in the Wiki.
This is a good place to start if you want to diagnose your vehicle's a/c problem.
This section of the manual has some other tests and flow sheets that will also help you to narrow down the possibilities.
If you properly diagnose your car's problem you won't be replacing parts you don't need and you won't repair that which is not broken.
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Yes, it´s a good idea to run the CCU-tests, they can give some good information.
Thanks
Thanks
I have tried to run the Climate Control Unit's self diagnostic test on page 22-12 in the Service manual but having some problem to understand what they mean:
The manual say "To run it, turn the ignition switch ON and turn the FAN switch to AUTO position. Wait for at least one minute on each TEMP display 18 C (64 F), 32 C (90 F). Then, push both the AUTO and OFF buttons ...and so on...
As I understand the ignition shall be ON but the engine not running?
But what do they mean with "wait at least one minute on each TEMP display, shall I start with one minute waiting on 18 C(64 F) and then move every temp-step and wait for one minute at them all the way to 32 C (90 F)? Many steps and many minutes before I can push AUTO and OFF button!
The manual say "To run it, turn the ignition switch ON and turn the FAN switch to AUTO position. Wait for at least one minute on each TEMP display 18 C (64 F), 32 C (90 F). Then, push both the AUTO and OFF buttons ...and so on...
As I understand the ignition shall be ON but the engine not running?
But what do they mean with "wait at least one minute on each TEMP display, shall I start with one minute waiting on 18 C(64 F) and then move every temp-step and wait for one minute at them all the way to 32 C (90 F)? Many steps and many minutes before I can push AUTO and OFF button!
Run on minimum temp for 1 minute and max temp for 1 minute.
Sheeze.
Now I have done the CCU-tests and it was no errors so the CCU thinks everything´s fine but there is still no cold air?
Anyone having some more ideas?
Anyone having some more ideas?
ysoslow, which groundwires do you mean?
I'm also experiencing the same issue. Blows cold when driving on the highway, but struggles to stay cool in stop and go traffic.
Ysoslow, are you saying your problem was solved by changing the ground wires? Do you know how this solved the problem? Which wires exactly are you referring to?
Have you confirmed the system has a proper Freon charge?
my car at idling was pushing out only 12.5 and with a/c on, it dropped down to 11.8. as I rev up the rmp, the number goes up. I figured it was either the alternator or grounds. I went with the cheaper route first and it solved my issue. I changed out all of my grounds. After changing it out, my votage is back to normal on idle. With A/C and radio, it still doesn't drop below 13.
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another thread on the same subject.
http://www.nsxprime.com/forum/showthread.php?t=137151&page=2
I just fixed mine. One Evaporator Fan was not working..
http://www.nsxprime.com/forum/showthread.php?t=137151&page=2
I just fixed mine. One Evaporator Fan was not working..
