A/C question
05-24-2012
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A/C question
My air is cold enough but the compressor kicks on and off about every 1-2 seconds, and I can feel the power loss when it kicks on. I checked the pressure of the system on the low port and when the compressor is running it is at 45PSI and when the compressor kicks off the pressure goes up to 75 PSI. Is my compressor shot or is the problem somewhere else?
05-24-2012
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Re: A/C question
check the plugs to the compressor.
the compressor is suppose to kick on and off when the car is cold enough...but its not suppose to do that on/off/on/off/on/off every 2 sec... depending how hot the temp inside ur car is, it should kick on and stay on for a while.
try turning ur AC the the coldest setting and seeing if that compressor stays on.
the compressor is suppose to kick on and off when the car is cold enough...but its not suppose to do that on/off/on/off/on/off every 2 sec... depending how hot the temp inside ur car is, it should kick on and stay on for a while.
try turning ur AC the the coldest setting and seeing if that compressor stays on.
05-24-2012
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Is the compressor directly below the alternator? And how do I check the plugs and what plugs(electrical?)? Sorry. I don't know a lot about A/C.
Last edited by mvanbv00; 05-24-2012 at 01:44 PM.
05-24-2012
#4
If you think a good mechanic is expensive, try hiring a bad one
Re: A/C question
My air is cold enough but the compressor kicks on and off about every 1-2 seconds, and I can feel the power loss when it kicks on. I checked the pressure of the system on the low port and when the compressor is running it is at 45PSI and when the compressor kicks off the pressure goes up to 75 PSI. Is my compressor shot or is the problem somewhere else?
You have LOW SIDE pressure readings here....
What is the HIGH SIDE pressure doing while this is going on?
(Very important info for determining the next step)
Did you DIY add your own freon?
05-25-2012
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I had a friend do a DIY freon (R134A) a few years ago. It has been doing this since then, but I never use my air (mostly because of this issue).
I don't know how to tell what the high side is doing. The only gauge I have is the crappy one that came in the kit, and it will only fit over the low side port.
And a little bit more info: When my friend did the DIY a few years ago, the start PSI was just at the bottom end of the acceptable range (about 30-35 PSI if I remember correctly) and he added one and a half small cans of R134A. I think that the gauge that came with the refill kit was bad or something, because the needle never moved from the 30-35 PSI range, so he just kept adding R134. Could this issue be an overfill issue?
I don't know how to tell what the high side is doing. The only gauge I have is the crappy one that came in the kit, and it will only fit over the low side port.
And a little bit more info: When my friend did the DIY a few years ago, the start PSI was just at the bottom end of the acceptable range (about 30-35 PSI if I remember correctly) and he added one and a half small cans of R134A. I think that the gauge that came with the refill kit was bad or something, because the needle never moved from the 30-35 PSI range, so he just kept adding R134. Could this issue be an overfill issue?
05-25-2012
#6
If you think a good mechanic is expensive, try hiring a bad one
Re: A/C question
I don't know how to tell what the high side is doing.
The only gauge I have is the crappy one that came in the kit, and it will only fit over the low side port.
And a little bit more info: When my friend did the DIY a few years ago, the start PSI was just at the bottom end of the acceptable range (about 30-35 PSI if I remember correctly) and he added one and a half small cans of R134A. I think that the gauge that came with the refill kit was bad or something, because the needle never moved from the 30-35 PSI range, so he just kept adding R134. Could this issue be an overfill issue?
And a little bit more info: When my friend did the DIY a few years ago, the start PSI was just at the bottom end of the acceptable range (about 30-35 PSI if I remember correctly) and he added one and a half small cans of R134A. I think that the gauge that came with the refill kit was bad or something, because the needle never moved from the 30-35 PSI range, so he just kept adding R134. Could this issue be an overfill issue?
There is NO WAY to tell how much is in a system without using both high side and low side gauges. The high side is very important too.
Yes, it is probably overfilled.
I'd tell you a pro should be the one doing AC work.
Charge R134a by weight, not by the canfull.
A seasoned pro can probably do it by feel, too.
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