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Hi there
First time I have ever had a heating problem, so was unsure how to begin, but some very useful posts on forums gave me some good advice
I have hot pipes in and out of bulkhead and therefore believe the heater-matrix is clear. Another tip was to listen for actuators whirring when moving the controls and here may lie the problem: when rotating the temperature control, I can hear movement on the cold side of the dial, but nothing on the hot side. This seems to fit the symptoms of my problem, but I don't understand the working/not working noises as I believe there is only one servo ( GM part 9180210 ) and if it were working at all, I would have expected it to work 100%. Is that illogical/foolishly optimistic ?
Just to list other things I checked and eliminated: all four heater-speeds working as well as all the flap-servos for wind-screen/foot-well etc.
Thanks in advance
P.S. Would it be possible to physically move the "valve" actuating arms so that I have heat until I can source a new unit, perhaps from a scrapper ?
First time I have ever had a heating problem, so was unsure how to begin, but some very useful posts on forums gave me some good advice
I have hot pipes in and out of bulkhead and therefore believe the heater-matrix is clear. Another tip was to listen for actuators whirring when moving the controls and here may lie the problem: when rotating the temperature control, I can hear movement on the cold side of the dial, but nothing on the hot side. This seems to fit the symptoms of my problem, but I don't understand the working/not working noises as I believe there is only one servo ( GM part 9180210 ) and if it were working at all, I would have expected it to work 100%. Is that illogical/foolishly optimistic ?
Just to list other things I checked and eliminated: all four heater-speeds working as well as all the flap-servos for wind-screen/foot-well etc.
Thanks in advance
P.S. Would it be possible to physically move the "valve" actuating arms so that I have heat until I can source a new unit, perhaps from a scrapper ?
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