AC question after motor install
Melting Slicks
Joined: Jul 2005
Posts: 2,586
Likes: 2
From: Bardstown Kentucky
The fittings are different sizes so you cant go wrong. Its the low side you need to charge. Like Boost Master said, passenger side small fitting.
Drifting
Joined: Oct 2003
Posts: 1,923
Likes: 5
From: San Antonio TX
been there done that.
there is a tag on the pass side of the car that indicated the amount of refrig. to put in. I think it is about 3 cans?
You can fill either port while the engine is NOT running, just wait about 15 min for it to all equalize.
fill with the cans upside down (this puts liquid into the system and is orders of magnitude faster) just let it equalize for 15 min before starting the engine.
most guage kits will have colored indicators to indicate proper charge, and or get a cheap temp gage for the vent to see if your temps are low enough.
be sure to evac the system and if it were me I would evac/fill/evac/fill the system if you are not sure of the vac pump. water does not mix well with the refrigerant (turns to an acid and can ruin you entire system).
PM me if you have other questions and or do not have a vac pump.
More Than Zero
there is a tag on the pass side of the car that indicated the amount of refrig. to put in. I think it is about 3 cans?
You can fill either port while the engine is NOT running, just wait about 15 min for it to all equalize.
fill with the cans upside down (this puts liquid into the system and is orders of magnitude faster) just let it equalize for 15 min before starting the engine.
most guage kits will have colored indicators to indicate proper charge, and or get a cheap temp gage for the vent to see if your temps are low enough.
be sure to evac the system and if it were me I would evac/fill/evac/fill the system if you are not sure of the vac pump. water does not mix well with the refrigerant (turns to an acid and can ruin you entire system).
PM me if you have other questions and or do not have a vac pump.
More Than Zero
Pro
Joined: Aug 2001
Posts: 724
Likes: 0
From: West Palm Beach FL
is it a new compressor that you installed? If so you need to add oil to the crankcase of the compressor....not through the freon lines...there is a seperate crankcase and you will burn up the compressor in 30 min if you dont fill this with oil
Tom
Tom
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Verdad Gallardo
Premium Supporting Vendor
Joined: Mar 2001
Posts: 5,241
Likes: 21
From: Knoxville Tennessee
Get a can of the refill stuff from Advance, etc. I usually get two of the large cans. With the car running and the AC on full blast start adding the fluid. Once you get some in it the compressor will come on, once it sees pressure enough to activate the switch. There is a gage on the bottle, just add the stuff until it is in the OK area. Pretty straight forward.
Le Mans Master
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
I am not sure what all of that other stuff is above, but you hook up the pump to the port near the battery, let it evacuate for 10 minutes.
Get a can of the refill stuff from Advance, etc. I usually get two of the large cans. With the car running and the AC on full blast start adding the fluid. Once you get some in it the compressor will come on, once it sees pressure enough to activate the switch. There is a gage on the bottle, just add the stuff until it is in the OK area. Pretty straight forward.
Get a can of the refill stuff from Advance, etc. I usually get two of the large cans. With the car running and the AC on full blast start adding the fluid. Once you get some in it the compressor will come on, once it sees pressure enough to activate the switch. There is a gage on the bottle, just add the stuff until it is in the OK area. Pretty straight forward.
I decided not to evac (even though I have a pump) and just started trying to add Oil to the compressor first.....nothing happened. Then I tried adding refrigerent and still it will not take or charge...I don't hear the compressor engaging at all. I was wondering if it was the result of not evac'ing first prior to trying to charge, or I somehow put the connector on backwards (if its possible) or maybe even a fuse. What is the little connector that (looks like a litte box) right above the connector that goes to the compressor?
Any help is appreciated.
Pro
Joined: Aug 2001
Posts: 724
Likes: 0
From: West Palm Beach FL
if you install a NEW compressor there is a bolt on the side which you can only get to when the compressor is out of the car. This is the crankcase fill plug. The new compressor comes with no oil. This is seperate than the oil in the lines......they do not mix. This does not pertain to an old compressor..as there may be enough oil in there allready.....
Tom
Tom
Le Mans Master
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
if you install a NEW compressor there is a bolt on the side which you can only get to when the compressor is out of the car. This is the crankcase fill plug. The new compressor comes with no oil. This is seperate than the oil in the lines......they do not mix. This does not pertain to an old compressor..as there may be enough oil in there allready.....
Tom
Tom
Premium Supporting Vendor
Joined: Mar 2001
Posts: 5,241
Likes: 21
From: Knoxville Tennessee
I was just going to post something about this. I just got done reinstalling my motor, new clutch, and tt kit. The last thing I usually do is the AC. I spilled a little oil out of the compressor when I had it out of the car...not much.
I decided not to evac (even though I have a pump) and just started trying to add Oil to the compressor first.....nothing happened. Then I tried adding refrigerent and still it will not take or charge...I don't hear the compressor engaging at all. I was wondering if it was the result of not evac'ing first prior to trying to charge, or I somehow put the connector on backwards (if its possible) or maybe even a fuse. What is the little connector that (looks like a litte box) right above the connector that goes to the compressor?
Any help is appreciated.
I decided not to evac (even though I have a pump) and just started trying to add Oil to the compressor first.....nothing happened. Then I tried adding refrigerent and still it will not take or charge...I don't hear the compressor engaging at all. I was wondering if it was the result of not evac'ing first prior to trying to charge, or I somehow put the connector on backwards (if its possible) or maybe even a fuse. What is the little connector that (looks like a litte box) right above the connector that goes to the compressor?
Any help is appreciated.
The refill bottles have the proper ratio of oil in them so I am not sure why everyone is trying to add oil? Too much oil in the system is just as bad or worse than not enough oil.
If all you did was bleed the system ALL you need to do is the following:
1. Hook everything back up (of course)
2. Hook up the pump, let it evacuate for 10 minutes
3. Start the car with the AC on high, it will not kick on right away, once you start adding the recharge and it gets sufficient pressure it will kick on and start to blow.
4. Add refrigerant until the gage on the refill bottle is in the green area.
I usually drive them around and then check them again after a few days. Sometimes you have to fill up more.
Beyond that, it is pretty straight forward.
Le Mans Master
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
The refill bottles have the proper ratio of oil in them so I am not sure why everyone is trying to add oil? Too much oil in the system is just as bad or worse than not enough oil.
If all you did was bleed the system ALL you need to do is the following:
1. Hook everything back up (of course)
2. Hook up the pump, let it evacuate for 10 minutes
3. Start the car with the AC on high, it will not kick on right away, once you start adding the recharge and it gets sufficient pressure it will kick on and start to blow.
4. Add refrigerant until the gage on the refill bottle is in the green area.
I usually drive them around and then check them again after a few days. Sometimes you have to fill up more.
Beyond that, it is pretty straight forward.
If all you did was bleed the system ALL you need to do is the following:
1. Hook everything back up (of course)
2. Hook up the pump, let it evacuate for 10 minutes
3. Start the car with the AC on high, it will not kick on right away, once you start adding the recharge and it gets sufficient pressure it will kick on and start to blow.
4. Add refrigerant until the gage on the refill bottle is in the green area.
I usually drive them around and then check them again after a few days. Sometimes you have to fill up more.
Beyond that, it is pretty straight forward.
It seems it is as equally important to recognize that the snap valve (or whatever you call it....quick connect) that goes over the service port....is in fact "right hand threaded". So while I thought I was turning it on by turning it counter clockwise...I was actually turning it off..so when I finally figured out that clockwise was on....the AC filled up perfectly taking 3 cans of R134.
Purely operator error....but I am thankful it was that simple...and I only figured it out after taking my digital multimeter to both the connectors and checking.
