Ls1 air conditioning

ThirdgenTa

Well-known member
Joined
Mar 17, 2008
Messages
5,120
Reaction score
5
Location
Aurora
So I was gonna recharge the a/c but when I looked around I noticed a lot of air blowing from this black device that the a/c lines come out of. Is this normal, something else or is their a leak in the a/c?
 

Turbocharged400sbc

Welllllllllll ya knowwwwwww.....
Joined
Jun 16, 2007
Messages
26,499
Reaction score
12
Location
hangover park IL
there is a gasket that seals the evap box and piping from leaking the air the blower fan is forcing through, it is probably not sealed well and thats all your feeling....while this may be from just the gromet right there needing to be pulled back into place it may mean that somepoint in the past the evaporator was replaced and the seals fell out of place.

a lit cigarette or a small piece of thread through a needle would point out the source and what you need to seal (black rtv works fine though you may smell it inside till it cured fully)
 

Wrencher

Well-known member
Joined
Sep 11, 2011
Messages
116
Reaction score
0
An evaporator case air leak is not a real big deal.
But if you want you can get some 3M strip caulk & put it in the gap to seal it up.

But it wouldn't be the cause of a poor A/C performance issue.
 

ThirdgenTa

Well-known member
Joined
Mar 17, 2008
Messages
5,120
Reaction score
5
Location
Aurora
So I tried charging it yesterday and what happened is the gauge would pretty much stay the same as if I was not filling it. Although it got slightly cooler.
 

Turbocharged400sbc

Welllllllllll ya knowwwwwww.....
Joined
Jun 16, 2007
Messages
26,499
Reaction score
12
Location
hangover park IL
unless you were using a decent dual gauge filling setup you wont notice anything untill you shutoff the car and let the system equalize (keep in mind ambient and condensor temps play a big part in system pressure). its not uncommon for the low side to just stay at low pressure while filling (it can jump up if you flip the can over to fill with liquid vs the evaporating gas)...but the high pressure side will rise, you wont see it on those cheapie low side only setups.
you prob need more to get to a full charge
 

ThirdgenTa

Well-known member
Joined
Mar 17, 2008
Messages
5,120
Reaction score
5
Location
Aurora
unless you were using a decent dual gauge filling setup you wont notice anything untill you shutoff the car and let the system equalize (keep in mind ambient and condensor temps play a big part in system pressure). its not uncommon for the low side to just stay at low pressure while filling (it can jump up if you flip the can over to fill with liquid vs the evaporating gas)...but the high pressure side will rise, you wont see it on those cheapie low side only setups.
you prob need more to get to a full charge
I did it on another car that was blowing warm air and it worked perfectly. I don't know if I should just keep putting more in. Will anything happen if I put too much freeon in?
 

Turbocharged400sbc

Welllllllllll ya knowwwwwww.....
Joined
Jun 16, 2007
Messages
26,499
Reaction score
12
Location
hangover park IL
yeah you can damage something by overpressurizing the system, at the least seals start failing, at most if can blow up the condensor/hose if they are weakened by corrosion.

most vehicles are around 2-2.25 lbs so i wouldnt put in more than 3 12oz cans on a "empty" car.you can fill it till the large pipe (low side) outta the firewall is nice and cool with water condensating on it and you should be close
 

Create an account or login to comment

You must be a member in order to leave a comment

Create account

Create an account on our community. It's easy!

Log in

Already have an account? Log in here.

Top Bottom