Btw the car was idle and A/C was on.
Aug 14, 2019 at 9:29 AM
A/C is not cold when idle
2011 KIA CADENZA
Advertisement
Oh, thanks. can i just discharge it a little bit? The low side?
Btw the car was idle and A/C was on.
Btw the car was idle and A/C was on.
No, the valve is stuck open too far. It will not lower the pressure by bleeding it out.
You need to replace it.
Roy
You need to replace it.
Roy
Aug 14, 2019 at 9:32 AM
Advertisement
Oh i see, but replace what?
Aug 14, 2019 at 9:38 AM
Expansion valve.
Roy
Roy
Aug 14, 2019 at 9:41 AM
So from what I understand the problem is not because the low side has high pressure but the expansion valve is not working probably right?
Aug 14, 2019 at 9:48 AM
The high side pressure is too high and the reason is that the expansion valve is bad. After you replace the expansion valve and dryer, evacuate the system and charge it, the pressure should be 25-30 lbs.
Roy
Roy
Aug 14, 2019 at 12:18 PM
Well, I guess I have to take it to a mechanic then.
Aug 14, 2019 at 3:06 PM
Okay, keep me updated.
Roy
Roy
Aug 14, 2019 at 3:13 PM
Sorry for delay. i have the found the problem; it is the high pressure pipe is leaking again. I just replaced last year. I mean is there is something else could do that ? Thanks
Oct 11, 2019 at 5:20 AM
As I stated previously, the expansion valve was your issue based on pressures.
Roy
Roy
Oct 11, 2019 at 6:20 AM
So first i need to replace expansion valve then replace the high pressure pipe right?
Oct 11, 2019 at 10:03 AM
I would replace both at the same time.
Roy
Roy
Image (Click to enlarge)
Oct 11, 2019 at 10:41 AM
Oh okay, and is that expansion valve picture? That is under dashboard right?
Oct 11, 2019 at 11:33 AM
No, under the hood by the firewall.
Roy
Roy
Oct 11, 2019 at 11:55 AM
Checked by the mechanic he said the the compressor is weak no need to check the expansion and the low pressure was 35 psi.
Oct 12, 2019 at 1:44 AM
I. Disagree.
Hope it works out for you.
Roy
Hope it works out for you.
Roy
Oct 12, 2019 at 4:58 AM
Well yea, i told him leave it i don't want to change the compressor.
Oct 12, 2019 at 12:11 PM
That I agree with.
Roy
Roy
Oct 12, 2019 at 12:23 PM
Thanks for the help and all the information bro.
Just for info the low pressure was 35 psi.
Just for info the low pressure was 35 psi.
Oct 12, 2019 at 12:24 PM
When did it change and why?
Roy
Roy
Oct 12, 2019 at 12:34 PM
Today the A/C fan set was almost at minimum.
The A/C is working fine the car was idle for about 15 minutes.
The A/C is working fine the car was idle for about 15 minutes.
Oct 12, 2019 at 1:49 PM
You still have the same problem. It will be back and you will still have to do the repair we discussed. It cannot and will not fix itself.
Roy
Roy
Oct 12, 2019 at 5:00 PM
Forget to tell you this : when i set AC to Max the Psi was about 50 when when the ac was on minimum the psi was 35 just to let you know .
Okay, thanks dude. i will check that and post the updates.
Okay, thanks dude. i will check that and post the updates.
Oct 13, 2019 at 12:44 AM
Sounds like a plan.
Roy
Roy
Oct 13, 2019 at 4:45 AM
I meant its normal when the ac at max the psi 50 and if its min its about 35 ?
Oct 13, 2019 at 7:05 AM
It should never change ever.
Oct 13, 2019 at 7:08 AM
Oh, i see. thanks for the info bro learned a lot from you.
Oct 13, 2019 at 9:17 AM
Tested again. the Low and high Pressure at 2,000 rpm's after the leak the Low was 20 psi and the high was 125 psi.
Oct 13, 2019 at 11:52 PM
Again, it does not matter. You have a bad expansion valve. It should never change pressure reading whether at idle, 2.000 RPM's or any other time.
Roy
Roy
Oct 14, 2019 at 3:32 AM
Okay, checked the pipe it is not leaking it is like an oil around it.
Oct 14, 2019 at 8:39 AM
Okay, you still need the valve.
Roy
Roy
Oct 14, 2019 at 9:36 AM
Noticed something else; when it blows a warm air i hear a weird noise sound near compressor under the hood.
Oct 15, 2019 at 4:57 AM
Can you upload a video of the noise to this post?
Roy
Roy
Oct 15, 2019 at 5:20 AM
I found a video with the same sound start from 44 seconds. That's hissing sound.
https://youtu.be/yrGuT_rjf68
I am not home right to make a video of my own if Its necessary i can make my own later. But it is the same sound.
https://youtu.be/yrGuT_rjf68
I am not home right to make a video of my own if Its necessary i can make my own later. But it is the same sound.
Oct 15, 2019 at 7:52 AM
Okay, that noise is the compressor itself making some internal noises.
Looks like you need to add that to your list of needed parts.
https://www.2carpros.com/articles/replace-air-conditioner-compressor
Roy
Looks like you need to add that to your list of needed parts.
https://www.2carpros.com/articles/replace-air-conditioner-compressor
Roy
Oct 15, 2019 at 8:02 AM
But do you think this issue caused the refrigerant to be leaking in the first place?
Oct 15, 2019 at 8:09 AM
No, it may have gone low in oil over time and this is the result. Hard to say without removing and disassembling the compressor for inspection.
Roy
Roy
Oct 15, 2019 at 8:17 AM
Oh i see, thanks.
Oct 15, 2019 at 8:18 AM
You are welcome.
Roy
Roy
Oct 15, 2019 at 8:22 AM