AC & Heater Control Valve W124
Thread Starter
Senior Member
Joined: Nov 2009
Posts: 275
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From: VA
1988 300E, 1994 E320, 1999 ML 320, 2002 SLK 32 AMG -SOLD-, ML 350SE -REPOSSESED-
AC & Heater Control Valve W124
Ok I've got a 1988 300E!
My indie mechanic threw out my AC and Heater Control Valve and replaced it with a switch off valve.
Closed: means the heat is on
Open: means the A/C is on
This is the line coming from the water pump to the condenser I imagine...
The coolant hose going to the top of the head has a switch off valve as well.
Someone please correct me if Im wrong... I just recently rebuilt a blown head and I want to get to the bottom of things
My indie mechanic threw out my AC and Heater Control Valve and replaced it with a switch off valve.
Closed: means the heat is on
Open: means the A/C is on
This is the line coming from the water pump to the condenser I imagine...
The coolant hose going to the top of the head has a switch off valve as well.
Someone please correct me if Im wrong... I just recently rebuilt a blown head and I want to get to the bottom of things
Senior Member
Joined: Jun 2006
Posts: 303
Likes: 1
From: Northern California
It changes all the time
I'm not quite sure what your question is, but I think you need to get a new indie.That system works just fine as it was designed. I suggest going back to original.
