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kragen sells a kit so that u can convert it to the 134a. All i had to do is put the fittings on.. and then i didnt let any gas out.. which i was told last nite mixing r12 and 134 isnt good.. So do i need to drain out the r12 first then do it? also do you know which one is LOW service port and the High? I have an idea whichone it is by tracing the piping. but i just want to make sure. thanks for the reply

HI everyeone... I tried to recharge my friends 92 Sc400 and i converted the R-12 to the R-134a (retrofit) and i had no luck. First of all.. IS the Low Service port right at the compressor for this car? or is it the one towards the front. It seem to be the one right on the compressor which is the one i tried to Recharge the R-134a to. I had the car running and A/c at full blast. I dont know why it wasnt suckin the recharge bottle. Did i do something wrong? ONe thing that stop me from continueing is that after a while. the A/c light started to blink then all of a sudden the engine shut off. If anyone has experience rechargin 134a or anything related please reply.. thanks all

HI everyeone... I tried to recharge my friends 92 Sc400 and i converted the R-12 to the R-134a (retrofit) and i had no luck. First of all.. IS the Low Service port right at the compressor for this car? or is it the one towards the front. It seem to be the one right on the compressor which is the one i tried to Recharge the R-134a to. I had the car running and A/c at full blast. I dont know why it wasnt suckin the recharge bottle. Did i do something wrong? ONe thing that stop me from continueing is that after a while. the A/c light started to blink then all of a sudden the engine shut off. If anyone has experience rechargin 134a or anything related please reply.. thanks all