My heater only blows cold. I have dissconnected the quick release pipes near the front of the engine, flushed and reverse flushed the matrix and all runs fine. I have however, noticed that the heater matrix is situated higher than the bleed valve and suspect that my problem is due to an air lock…

[s-type] Heater problems

Rob_Reilly (Rob Reilly) August 2, 2018, 12:15pm 3

I mentioned that I was getting heat on the left (driver’s) side but not on the right (passenger’s) side of my 2000 3.0 S-type. I tried jumping power to the two solenoids on the heater control valve. One made a noise and one didn’t. So I removed it and tried to take it apart, thought maybe it just needs cleaning. Two screw heads broke off (T-10 Torx), so I decided to buy a new one. It was a Bosch valve. Most of my usual parts sources had no listing for S-Type, but one had the Bosch part …

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