A/C Problem

schutz86 · 07-15-2008, 08:17 PM

ok so i just converted my R-12 to the R-134a or whatever it is. i pumped all the R-12 refrigerant out of the lines for 45 minutes. then i put the new fittings on and charged it with the new refriderant. it works. but only for a little bit. like it will come on for a few minutes then the compressor kicks off for a few minutes and the air gets warm. then it will kick back on and get cool again. does anyone know how much refriderant should be in there. i think i might have just slightly too much or too little. i put 2 12oz cans in.

Chambers · 07-16-2008, 02:30 AM

Sounds like the compressor needs some more oil, get a small can of oil for your system and give that a try.

Good luck.

OfnaRcR · 07-17-2008, 02:11 PM

Quote:

Originally Posted by Chambers

Sounds like the compressor needs some more oil, get a small can of oil for your system and give that a try.

Good luck.

Is there some kind of AC oil level sensor that kicks off the compressor that i haven't heard about??

As for the origional question, how cold does it get? It could be overcharged/undercharged.

Chambers · 07-17-2008, 04:00 PM

Yea, there is a sensor in all AC systems that senses the level of oil, if its to low it will either not let the compressor spin or it will kick it on/off.

Sorry I have no deffinative answer for you about the temp, when my compressor was working it would blow ice cold air almost instantly after turning it on.

Good luck.

CyFi6 · 07-17-2008, 05:42 PM

You should really hook up a gauge set so you can determine your problem further.

schutz86 · 07-18-2008, 07:40 PM

whenever the compressor is working the air is cool but not really cold. so im thinking maybe undercharged? if i hook up a gauge to it how much pressure should it be at?

07-15-2008, 08:17 PM	#1
schutz86 Stock Join Date: Jul 2008 Location: Pittsburgh Posts: 7	A/C Problem ok so i just converted my R-12 to the R-134a or whatever it is. i pumped all the R-12 refrigerant out of the lines for 45 minutes. then i put the new fittings on and charged it with the new refriderant. it works. but only for a little bit. like it will come on for a few minutes then the compressor kicks off for a few minutes and the air gets warm. then it will kick back on and get cool again. does anyone know how much refriderant should be in there. i think i might have just slightly too much or too little. i put 2 12oz cans in.

07-16-2008, 02:30 AM	#2
Chambers walbro fp Join Date: May 2007 Location: USA - Harford County, Maryland Posts: 481	Sounds like the compressor needs some more oil, get a small can of oil for your system and give that a try. Good luck. __________________ Whats in the garage, well.... in the yard. 1986.5 Toyota Supra - NA - 5 spd 1986 Ford Ranger Lowrider - 5 spd 1984 Ford Ranger XLT - 7" Lift - 4X4 - Auto "Stuck in the 80's"

07-17-2008, 04:00 PM	#4
Chambers walbro fp Join Date: May 2007 Location: USA - Harford County, Maryland Posts: 481	Yea, there is a sensor in all AC systems that senses the level of oil, if its to low it will either not let the compressor spin or it will kick it on/off. Sorry I have no deffinative answer for you about the temp, when my compressor was working it would blow ice cold air almost instantly after turning it on. Good luck. __________________ Whats in the garage, well.... in the yard. 1986.5 Toyota Supra - NA - 5 spd 1986 Ford Ranger Lowrider - 5 spd 1984 Ford Ranger XLT - 7" Lift - 4X4 - Auto "Stuck in the 80's"

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07-17-2008, 05:42 PM	#5
CyFi6 3" Exhaust Join Date: Oct 2007 Location: SLO Posts: 234	You should really hook up a gauge set so you can determine your problem further.

07-18-2008, 07:40 PM	#6
schutz86 Stock Join Date: Jul 2008 Location: Pittsburgh Posts: 7	whenever the compressor is working the air is cool but not really cold. so im thinking maybe undercharged? if i hook up a gauge to it how much pressure should it be at?