in cab temp control,only blows hot air.
If there is an airlock,in the cooling system,would this cause my in cab temp
control,to only blow hot air,when switched to cold.
I this airlock is the problem,as I have already changed the valve within the
unit,then how can I release this airlock.
Check the4 condition of the heater tape in the rear of the engine compartment. Check also the vent flaps inside the cab of the vehicle. It could be that a clip holding a flap cable has come a drift
What I had to do to correct this problem,was as follows.First flush out the heater itself,by putting a water hose into the inlet pipe,at the bulkhead,and an outlet pire into the other one,and flush this system,until clean,then join the two pipes with a tube,remove thermostat,replace its cover,then I took the pipes off the lower joint of the engine cooling system,and flushed the whole engine system,once done,put things back as they were,also thermostat,and add distilled water and antifreeze mix. It's never going to be an air con,but at least it blows cool air now. Regards GURUDF2SS
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