Air conditioning in my 1992 SE
Member
Joined: Oct 2002
Posts: 86
Originally Posted by ElVito1981
ok, to my disappointment, my car has the R12. Is it still harmful to the enivornment when I have my A/C on, or only if the system is leaking?
How bad is that stuff for you anyway? When I was getting an A/C hardline at the junkyard, as soon as I unscrewed it, it sprayed all that crap out for like 5 mins lol. You'd think the junkyard would drain it before hand .
my 1993 had 134a. and if the r12 is leaking go to the autoparts store and get the 134a conversion kit. remember to change the oil in the compressor or BANG ! goes the compressor. i know many who have changed to 134a its not hard to do. plus get the refrigerant with uv in it and get a blacklight. try to see where its comming from.
Originally Posted by Tom91GXE
How bad is that stuff for you anyway? When I was getting an A/C hardline at the junkyard, as soon as I unscrewed it, it sprayed all that crap out for like 5 mins lol. You'd think the junkyard would drain it before hand .
U-Pull-It-Yo-Dam-Self yards rarely drain anything from the cars, except maybe the fuel
Originally Posted by Alex_V
no. The ac is a sealed system. If you gety a leak only then is it harmful to you and the environment.
~Alex
~Alex
ok, how do you know if you have a leak? If it's not pumping out cold air?
The pressure switch is detecting a low pressure.
If at an idle i guess it is partially normal.
Mine does it at an idle and the repair man that was rechargin my system said ti was just detecting low pressure. It would run for a minute then shut off for like 30 seconds then back on for a bit.
If at an idle i guess it is partially normal.
Mine does it at an idle and the repair man that was rechargin my system said ti was just detecting low pressure. It would run for a minute then shut off for like 30 seconds then back on for a bit.
Originally Posted by kat
If the ac is cycling on and off it is probably low on freon -
I don't believe R12 is actually bad for the ozone layer so don't worry about that
I don't believe R12 is actually bad for the ozone layer so don't worry about that
R12 is very bad for the ozone layer...
http://www.epa.gov/docs/ozone/title6...ers/cons2.html
Originally Posted by kat
If the ac is cycling on and off it is probably low on freon -
I don't believe R12 is actually bad for the ozone layer so don't worry about that
I don't believe R12 is actually bad for the ozone layer so don't worry about that
The difference in 92 vs 93 A/C systems is that up to 92 used R12 and 93/94 used R134a
ricks92 is it fully charged? have ACC or the regular climate buttons?
Maximaman iw ill pom this to you just in case you dont check this post.
I foudn out what causes the compresser to cycle on and off.. it is the Intake Temp. sensor, it is located around the evaporator/heatercore area. I never pulled mine apart yet but I was assured if the system is fully charged this is one thign ti can lead to. I performed the self diagnostic on my aCC and sure enough the code 24 showed up.
Maximaman iw ill pom this to you just in case you dont check this post.
I foudn out what causes the compresser to cycle on and off.. it is the Intake Temp. sensor, it is located around the evaporator/heatercore area. I never pulled mine apart yet but I was assured if the system is fully charged this is one thign ti can lead to. I performed the self diagnostic on my aCC and sure enough the code 24 showed up.
Originally Posted by MrSector9
ricks92 is it fully charged? have ACC or the regular climate buttons?
Maximaman iw ill pom this to you just in case you dont check this post.
I foudn out what causes the compresser to cycle on and off.. it is the Intake Temp. sensor, it is located around the evaporator/heatercore area. I never pulled mine apart yet but I was assured if the system is fully charged this is one thign ti can lead to. I performed the self diagnostic on my aCC and sure enough the code 24 showed up.
Maximaman iw ill pom this to you just in case you dont check this post.
I foudn out what causes the compresser to cycle on and off.. it is the Intake Temp. sensor, it is located around the evaporator/heatercore area. I never pulled mine apart yet but I was assured if the system is fully charged this is one thign ti can lead to. I performed the self diagnostic on my aCC and sure enough the code 24 showed up.
You got a pic of this sensor????
Senior Member
Joined: Jul 2004
Posts: 3,193
From: BFE, UT
It's the sensor for the TXV valve on the evaporator. It opens and closes the changing the amount of refrigerant allowed to enter the evaporator. This also turns off the A/C Compressor if the evaporator gets too cold. Otherwise it will ice over and become useless.
An A/C system that is pumping cold air, and cycling on/off is fuctioning normally. It should do this based upon Temp, and pressure inside the system. There is also a cut-out when it senses WOT (Wide Open Throttle). The Compressor then turns off, freeing up power. This was done so there was no lag if trying to pass another vehicle.
An A/C system that is pumping cold air, and cycling on/off is fuctioning normally. It should do this based upon Temp, and pressure inside the system. There is also a cut-out when it senses WOT (Wide Open Throttle). The Compressor then turns off, freeing up power. This was done so there was no lag if trying to pass another vehicle.
no but you have to understand the wya ours is cycling since i expect mine is doing the exact same thing.
After talking to the refrig tech he told me what to look for in the service manual.
I knwo cycling is normal but then the system usually retains a constant temperature. This the air coming from the vents will be really nice and cold/cool (depending on outside temp) but then after aminute it will start to warm up (can tell the compresser shut off) stay warm for a minute then back to cold.
He said definatly it is that sensor bad, my diagnostic test on the ACC also stated this sensor was bad....
I think i am going to tear into it today... yay :P
Also that is about the worst diagram ever :/ should have some other thign smarked so you know kinda where to look. I think over on the side is the ecm.
After talking to the refrig tech he told me what to look for in the service manual.
I knwo cycling is normal but then the system usually retains a constant temperature. This the air coming from the vents will be really nice and cold/cool (depending on outside temp) but then after aminute it will start to warm up (can tell the compresser shut off) stay warm for a minute then back to cold.
He said definatly it is that sensor bad, my diagnostic test on the ACC also stated this sensor was bad....
I think i am going to tear into it today... yay :P
Also that is about the worst diagram ever :/ should have some other thign smarked so you know kinda where to look. I think over on the side is the ecm.
Senior Member
Joined: Jul 2004
Posts: 3,193
From: BFE, UT
Originally Posted by MrSector9
no but you have to understand the wya ours is cycling since i expect mine is doing the exact same thing.
Originally Posted by MrSector9
Also that is about the worst diagram ever :/ should have some other thign smarked so you know kinda where to look. I think over on the side is the ecm.
i have the same symptoms in my max.. it would turn on (compressor) it would get cold/cool then get warm and then a few seconds later the compressor kciks in 93 maxima so your saying the sensor is to blame.. how much to replace the intake sensor??? got a part #? and if so did you a/c work properly after you changed the sensor
Posted By MrSector9
no but you have to understand the wya ours is cycling since i expect mine is doing the exact same thing.
After talking to the refrig tech he told me what to look for in the service manual.
I knwo cycling is normal but then the system usually retains a constant temperature. This the air coming from the vents will be really nice and cold/cool (depending on outside temp) but then after aminute it will start to warm up (can tell the compresser shut off) stay warm for a minute then back to cold.
He said definatly it is that sensor bad, my diagnostic test on the ACC also stated this sensor was bad....
I think i am going to tear into it today... yay :P
Also that is about the worst diagram ever :/ should have some other thign smarked so you know kinda where to look. I think over on the side is the ecm.
Posted By MrSector9
no but you have to understand the wya ours is cycling since i expect mine is doing the exact same thing.
After talking to the refrig tech he told me what to look for in the service manual.
I knwo cycling is normal but then the system usually retains a constant temperature. This the air coming from the vents will be really nice and cold/cool (depending on outside temp) but then after aminute it will start to warm up (can tell the compresser shut off) stay warm for a minute then back to cold.
He said definatly it is that sensor bad, my diagnostic test on the ACC also stated this sensor was bad....
I think i am going to tear into it today... yay :P
Also that is about the worst diagram ever :/ should have some other thign smarked so you know kinda where to look. I think over on the side is the ecm.
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