OK i got the cans of r134a from kragen and i filled up the ac in my van after replacing the a/c compressor. well went to check the pressure with the say fitting i used to fill my 99 windstar and it wouldn't fit on the valve for the Taurus. and yes i know that its the low side its the same one i used to fill it a couple of years ago but gauge/hose. but i thought it was weird cause it was the same brand of refill i used to fill it a couple of years ago and haven't done any work on it. the valve is to big for the gauge/hose. i also ran in to the same problem on a 98 jeep grand Cherokee that i was checking out for a buddy of mine. i thought that all r134a systems had the same fittings on them but i could be wrong please shed some light on this for me.