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88 930 heater diagnosis help
Hi all,
My 88 930's heater is acting up. With the ignition on, the foot-well blowers act normally and run at three speeds depending on the position of the heat control. Then, they suddenly stop, and only restart if I turn the heat control back to 2 or less, and turn the controller up again. The fans will increase in speed and stop after a few seconds. They will always restart for a short time if I turn the heat back down to 2. Any ideas before I tear into it?? I am thinking maybe a short or open temperature sensor is killing heat.
Does anyone know if this is in fact normal behavior, I was thinking maybe the system would not let the foot well booster fans run until the temperature sensor in the heat ducts from the motor saw some heat, but I'm pretty sure its dead (i.e. no foot well fans running) when I'm driving it also. I plan on testing it in the coming days.
Thanks in advance.
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1988 930: 3.5L 100mm LN slipins, LN FFA rods, Supertec studs, GT3582R with T4 1.07A/R twin scroll housing, RarlyL8 equal length divided headers, dual Tial MVS 38mm WG's, Carrera 3.2 heads with 993 big valves. 964 Cams, full bay IC, KEP st1 clutch. PE3 sequential ECU with 750cc EV14 injectors, CoP twin plugs, J&S Safegaurd, Aquamist HSF3 water inj. Wavetrac LSD.
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