Hi I am looking at the 3.0 v6 XJ, it has a problem it does not blow warm air on the drivers side, will only blow cold air. if you turn the heater system off that is the only time it stops blowing cold any help cheers. Blue.
seen this a few times. Believe a backflush of the heater matrix will resolve it. Be careful not to overdo the pressure and think there is a faq somewhere too showing the use of a push fit hose connector to slip inside the heater matrix hose.