royalbluepearl

Hi all, l just filled with a gauged can. It read right at the green blue line meaning borderline coolant in car, l had just used the same gauge on my oddy to dry run and it read higher so pretty sure it is reading accurately. Anyway, after emptying the can into it, the gauge remains in the same place and it feels like no change in cooling. l have read what l can find regarding ac issues here but wish l might find a typical 08 civic issue that reflects this symptom.
Probably not gong to be happy.

cj1

Can you post the vent temp driver/passenger?
Compressor clutch is cycling on/off every 10-15 seconds?

royalbluepearl

Hi thanks for the help.. drv side 83 pass side 78 degrees hmmm.. interesting middle ports are 79
Funny thing too is Compressor once pressure is built begins or tries to start for <1 sec then rests 4secs then repeats. have noticed less air volume as well drv side in particular.. just picked tech at dealership says issues with this year civic is compressor shaft pitting/fails, both fans running too btw.

mcnoople

So your compressor isn't staying engaged? That is a problem all by itself. Does the AC cool any at all? Is it cold when the car first starts and then gets warmer?

This is one of those situations that a full understanding of how the system operates and how it is supposed to behave is fairly well required to figure out what is wrong. Is your compressor cycling off because of too low of pressure? Too high? Other electrical issues? Just adding r134 is not always the correct answer.

The difference in vent temps really isn't really important. Some brand new cars have 8-10 temp difference between the vents on either side of the radio. That is a distance of 10 inches between the vents.

cj1

Compressor not cycling normally so may be cutting off do to low pressure/high pressure or other faulty inputs.
Since adding additional refrigerant didn't help, best to have system tested by shop.

royalbluepearl

Right on, it has evidenced low pres as l added can via dial on it, and did not show any change after a can so l imagine there is a leak at a seal somewhere.
l note this is an ongoing known issue on 08 civics. Thank you and all

royalbluepearl

I am wondering why it attempts to compress then shuts. 1 sec then retries @ 4 second intervals ?

cj1

"I am wondering why it attempts to compress then shuts. 1 sec then retries @ 4 second intervals ?"

Maybe right on the low pressure borderline, turns on, pressure drops and low pressure switch shuts off compressor, pressure rises and continues short cycle..

ezone

System is severely overcharged now. High pressure cutout occurs somewhere around 450-500 PSI.

If you had an AC manifold gauge set (to read both HIGH AND LOW sides of the AC system) you could garner a whole lot more useful info about what's going on. And the high side reading would probably scare you.


The freon probably was not low in the first place, now you've added more freon to an already mostly full system. These small capacity systems do not tolerate that.

So now you have the original problem, PLUS this new overcharge problem you created.



Probably 3/4 of the problems I see with these AC systems have nothing to do with freon.