Air Conditioning

[bbusse]

I apparently have a very slow leak in my AC system as told to me by my mechanic. Said it would likely last a year or more on a refill. He said he could refill the refrigerant, but unfortunately his SnapOn diagnostic tool didn't have the codes to reset the compressor. Without resetting the compressor code, it will not engage.

Does this sound correct?

Thanks,

[dsatt12]

I've heard R134 systems are more prone to leaks than the old freon since they have to operate at higher pressures. I've actually heard it's considered to be an uncommonly good tight system if it's not a pound or two low after a year or two.

As for the code, shouldn't yanking the battery clear it? You could have some minor issues with idle relearn and stuff, but not usually.

[bbusse]

My uneducated guess on this would be that disconnecting the battery wouldn't affect the code settings in the computer, but it would certainly be worth a try.

Battery went dead a couple of times when I inadvertantly popped the trunk lid open over night, but maybe there was still enough juice for something as low power as the computer.

Thanks,

[dap08]

Without Scan Tool

The only way to display diagnostic trouble codes (DTCs) is by using a TECH 1. There are no provisions for "ON-BOARD" diagnostics. Refer to the Tech 1 operators manual for further information on Tech 1 use and procedures.

NOTE: Most after market scan tools will NOT access / clear these codes. Follow the proper instructions, located in the owners manual, for the specific scan tool being used.

i have an autoxray scan tool..it clears all codes..it cost me about 150 bucks or so refurbished..just do a search ..if you plan on keeping your aurora its a good thing to have!

the service manual is a bit contradicting..it says you cant clear codes without a scan tool..then in another place it says disconnect the negative battery terminal for 30 seconds to clear codes...i would give it a shot.

[The Rebel]

Originally Posted by bbusse

I apparently have a very slow leak in my AC system as told to me by my mechanic. Said it would likely last a year or more on a refill. He said he could refill the refrigerant, but unfortunately his SnapOn diagnostic tool didn't have the codes to reset the compressor. Without resetting the compressor code, it will not engage.

Does this sound correct?

Thanks,

Hey...(Cady's you clear codes)There is a pressure switch though...If there is no freon in the system the pressure switch will kick in to shut down the compressor (to protect the compressor) when the freon has gone or leaked out due to a possible O'ring or a leak @ the shaft seal. When all leaks are fixed, and after system is sucked down, Freon is put into the system either 134a or R12. If the equipment cannot detect a leak (but you have a mi-nute one) then dye will be put into the system. Then, later, a month, a week, or when you notice the temp has drop from cold bring the car back to the shop & they will use a special light to see the dye. Then the leak can be fixed!

[dsatt12]

Originally Posted by dap08

Without Scan Tool

The only way to display diagnostic trouble codes (DTCs) is by using a TECH 1. There are no provisions for "ON-BOARD" diagnostics. Refer to the Tech 1 operators manual for further information on Tech 1 use and procedures.

NOTE: Most after market scan tools will NOT access / clear these codes. Follow the proper instructions, located in the owners manual, for the specific scan tool being used.

i have an autoxray scan tool..it clears all codes..it cost me about 150 bucks or so refurbished..just do a search ..if you plan on keeping your aurora its a good thing to have!

the service manual is a bit contradicting..it says you cant clear codes without a scan tool..then in another place it says disconnect the negative battery terminal for 30 seconds to clear codes...i would give it a shot.

Careful about what you go buy. I see you have a 95, so you have an OBD I system with an OBD II connector. I bought an Actron CP9110 off ebay. You need the GM cartrigde, plus the GM OBDII cable. I bought the cable directly from Actron personally. The more expensive snap-ons or other professional type scan tools with usually do as well, but none of the truly cheap OBD II readers will do the trick for you.