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Re: Expansion valve?
Well, the pressure of R134a is different from R12 at a given temp - so I've been told that the valves are calibrated differently. An R12 valve in an R134a system will hold the evaporator at a higher temp, so it won't cool as effectively. i was told that in an opposite situation the evaporator might freeze if the conditions are right. I swapped the valve in my Range Rover when the system was converted. This is all I know :-). The juice is supposed to be something to be used in a converted system. They are mixes of different stuff - the ingredients are the same as in R134a - only the %:ages are different. I forget the details. The symptoms were exactly the same with R12 - I just recharged it to check if it was low. Thanks, Tapani
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