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 Anyone know where low pressure port for AC is?

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DEMonte1997
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DEMonte1997


Name : Rick
Age : 45
Location : CT
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Anyone know where low pressure port for AC is? Empty
PostSubject: Anyone know where low pressure port for AC is?   Anyone know where low pressure port for AC is? EmptyTue Jun 09, 2009 3:00 pm

I have a leak somewhere and need to figure out where it is. Figure I'll add some refrigerant with the dye in it. I saw a port on the left side by the alternator but wasn't sure if that's what I need.

TIA
-Rick
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Rickw
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Name : Rick
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Anyone know where low pressure port for AC is? Empty
PostSubject: Re: Anyone know where low pressure port for AC is?   Anyone know where low pressure port for AC is? EmptyTue Jun 09, 2009 7:57 pm

The low pressure port is a different size than the high pressure port.
So, if you have the correct hose to fill the system it will only fit the low side.
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AA
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Name : Aaron
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Anyone know where low pressure port for AC is? Empty
PostSubject: Re: Anyone know where low pressure port for AC is?   Anyone know where low pressure port for AC is? EmptyTue Jun 09, 2009 8:32 pm

I think the low pressure port is the smaller one.

_________________
'05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26

'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes

'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch

^^^ SOLD ^^^ frown

'70 Ninety-Eight Holiday Coupe 455cid • 116k miles
^^^ SOLD ^^^ frown
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DEMonte1997
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DEMonte1997


Name : Rick
Age : 45
Location : CT
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Post Count : 1429
Merit : 37

Anyone know where low pressure port for AC is? Empty
PostSubject: Re: Anyone know where low pressure port for AC is?   Anyone know where low pressure port for AC is? EmptyTue Jun 09, 2009 8:34 pm

Rickw wrote:
The low pressure port is a different size than the high pressure port.
So, if you have the correct hose to fill the system it will only fit the low side.

Good call. I figured it was that way but wanted to make sure. If memory serves, Aaron is right. The low pressure one is the smaller port. I'll find out tomorrow. smile
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BillBoost37
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Anyone know where low pressure port for AC is? Empty
PostSubject: Re: Anyone know where low pressure port for AC is?   Anyone know where low pressure port for AC is? EmptyThu Jun 11, 2009 7:04 am

Being you...I nearly gave the Regal answer. suspect

Most H/G body's have it right by the passenger motor mount in front of the water pump. High side is usually closer to the strut tower in the same area. Low is the smaller of the two fittings.

If you need a hit of freon or a little diagnosis and don't mind the cruise to Enfield.. I've got a full set of gauges and about 15lbs left in the tank.
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DEMonte1997
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DEMonte1997


Name : Rick
Age : 45
Location : CT
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Anyone know where low pressure port for AC is? Empty
PostSubject: Re: Anyone know where low pressure port for AC is?   Anyone know where low pressure port for AC is? EmptyTue Jun 30, 2009 4:37 pm

LOL... I finally got me a non w-body L67. smile

Might take you up on the offer. I tried to recharge the system a few weeks ago. It took the whole can but I got no AC out of it. Thinking the AC compressor might be shot because the clutch isn't engaging.
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AA
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Name : Aaron
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Anyone know where low pressure port for AC is? Empty
PostSubject: Re: Anyone know where low pressure port for AC is?   Anyone know where low pressure port for AC is? EmptyTue Jun 30, 2009 4:40 pm

Was it holding any pressure at all?

_________________
'05 GTO 6.0L • 6-spd • 95k miles • 0-60: 4.8s • 16.9 avg MPG • Nelson Ledges Lap: 1:26

'95 Celica GT 2.2L • 5-spd • 165k miles • 0-60: yes

'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
3.4" pulley • AL104 plugs • 180º t-stat • FWI w/K&N • 1.9:1 rockers • OR pushrods • LS6 valve springs • SLP headers • ZZP fuel rails
KYB GR2 struts • MaxAir shocks • Addco sway bars • UMI bushings • GM STB • Enkei 18" EV5s w/ Dunlop DZ101s • F-body calipers
EBC bluestuff/Hawk HP plus • SS lines • Brembo slotted discs • DHP tuned • Aeroforce • Hidden Hitch

^^^ SOLD ^^^ frown

'70 Ninety-Eight Holiday Coupe 455cid • 116k miles
^^^ SOLD ^^^ frown
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Rickw
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Name : Rick
Location : Lancaster, MA
Joined : 2008-09-13
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Merit : 119

Anyone know where low pressure port for AC is? Empty
PostSubject: Re: Anyone know where low pressure port for AC is?   Anyone know where low pressure port for AC is? EmptyTue Jun 30, 2009 4:48 pm

Did the system actually take in the freon? Was the system completely empty?
If the compressor isn't working you generally won't get it to accept any freon.
The clutch won't engage if the system pressure is still low. There is a low pressure safety switch in the line to detect low pressure and disengage the clutch so you don't fry the compressor pump.
The can of freon you attempted to add may not have actually entered the system. Did you notice it get lighter in weight? You still may need more freon to satisfy the low pressure switch, although usually one 12 oz. can will be enough to get the clutch to come on, then you would need to add more to fill system if empty.
If Bill is available to diag. the system it would be a good idea, could be many things in addition to the leak that must exist for it to lose the freon in the first place.
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DEMonte1997
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DEMonte1997


Name : Rick
Age : 45
Location : CT
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Merit : 37

Anyone know where low pressure port for AC is? Empty
PostSubject: Re: Anyone know where low pressure port for AC is?   Anyone know where low pressure port for AC is? EmptyWed Jul 01, 2009 12:53 am

It took the whole can and I didn't see any leaks (to the best of my knowledge). The addative has stop leak and leak detector in it (in other words, it was bright so you couldn't miss it). The hookup hose I have is ghetto and doesn't have a pressure gauge so I'm not sure what is in the system right now. The bottle I used was quite small; I'm not sure if it was 12oz. If the system is completely empty of all freon, something tells me that I have a decent sized leak somewhere that I didn't see.

I'll give Bill a holler soon and hopefully he can help me get it sorted out.
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Anyone know where low pressure port for AC is? Empty
PostSubject: Re: Anyone know where low pressure port for AC is?   Anyone know where low pressure port for AC is? Empty

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