Cadillac Seville / Cadillac Eldorado Forum Discussion, a/c recharge in Past Cadillac Vehicle Discussion; So tomorrow I am probably going to recharge my ac. A friend of mine has the ac recharge machine, so ...
- 09-28-13 01:50 AM #1
So tomorrow I am probably going to recharge my ac. A friend of mine has the ac recharge machine, so we will be using that.
Is there a special procedure you need to do before or after the recharge? And how much 134 refrigerant will the system take if its completely empty? (98 eldorado)
- 09-28-13 03:04 AM #2
Not sure what the capacity is, but you need to find the leak first.
...And if your friend doesn't know how to charge an A/C system, he shouldn't be using the machine.
- 09-28-13 09:42 AM #3
Re: a/c recharge
If the '98 is the same as the 2000+ it holds 2.2 lbs or refrigerant. You have to clear any low refrigerant codes to enable the compressor and draw a vacuum first, but if your friend has an expensive A/C machine I would assume he has a shop and knows how to use it.
- 09-28-13 01:50 PM #4
Re: a/c recharge
I hope by "AC MACHINE" you are referring to a real recharging station -
and you DON'T mean the mickeymouse single gauge can-tapper -
if your system was/is low on freon there IS a leak somewhere -
and that leak needs to be found/fixed -
Is there a special procedure you need to do before or after the recharge
ignition ON - clear all codes -
ignition OFF - evacuate the system -
vacuum the system down to 29" for MINIMUM of 15 minutes -
turn the vacuum pump off -
verify the system maintains the 29" of vacuum for a MINIMUM of 15 minutes -
with the engine OFF - start charging the freon -
when one can - or one pound of freon is in the system -
start the engine - turn the AC ON -
set the temp to 60* -
fan to medium speed -
the compressor will cycle on and off as more freon enters the system -
the cycling should stop after the second pound - full charge is 2.2 pounds -
to verify proper AC operation -
with the engine at a high idle - 1500-rpm -
the air emitting from the center vent should be 37* to 42* -
with an ambient temp of 85 or less -
HIGH side pressure should be around 175 to 225 -
LOW side pressure should be around 30 to 35 -
- 09-28-13 06:23 PM #5
Yes he has the real a/c charging machine. I was asking this because I didn't know if Cadillac's ac system had a different procedure of recharging.
Another question... does the system hold refrigerant after dropping the engine? Or do I have a leak???
- 09-28-13 06:42 PM #6
Re: a/c recharge
does the system hold refrigerant after dropping the engine?
Or do I have a leak??
there is no connection between the engine and the AC system -
other than the engine spins the compressor -
depending on HOW the engine was removed -
would determine whether or not the AC system was opened or not -
- 09-28-13 08:08 PM #7
+ Reply to Thread
Gear in this thread - Powered by O'Reilly Auto Parts
- PowerTorque Tools - Long Arm Hex Key SAE
Long Arm Hex Key SAE - 13 Pcs SAE Long Arm Hex Key Set; With Storage Container
- PowerTorque Tools - Stubby Star Bits Socket Set
Stubby Star Bits Socket Set - 10 Piece; 1/4" & 3/8" Drive; Star Stubby Bit Socket Set; Contains: 1/4" Drive: T-10, T-15, T-20, T-25, T-27 & T-30,3/8" Drive: T-40, T-45,T-47 & T-50
- PowerTorque Tools - SAE Hex Bits Set
SAE Hex Bits Set - 7 Piece; 3/8" Drive; SAE Hex Bits; Contains: 1/8", 5/32", 3/16", 7/32", 1/4", 5/16" & 3/8"