A friend of mine has an '93 850, which the local dealer has diagnosed as having a failed Dual Zone ECC unit.
Symptoms are that the fan runs very briefly on startup and then will not run at all - at speed, however, cold air comes through the vents, suggesting that the system is cooling, the fan is just not running.
First question is: is there anything else that could cause this besides the ECC unit? As I understand it, the unit we are talking about is the unit with the temp knobs that slides into the dash.
Secondly, if it is the ECC unit, any suggestions for finding one at a reasonable cost?
Thanks.
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