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Q: expansion valve on 1990 Mercedes-Benz 190E

Enthusiast 01be16a5a93688912f14755221fb15211b518d9a788cf01b455e03cc1bd585ac
Since the A/C isn't working,I'm changing to the new freon. Replaced condenser(leaking) receiver/dryer and heater valve. Started smelling anti-freeze in cabin so I will be changing out the heater core. My question is: how much trouble is it to change the expansion valve?
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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Hey man...I changed over to the new freon about 5 years ago. I bought the complete change-over kit (Intermatic, I think) at the auto parts store. I did not change out any ac parts, even though I had a leak somewhere. I just used the stop leak brand that goes with the change over kit. I'm really happy with it.
Ernie in Dallas, TX
ewsdfw@netzero.net
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