August 2, 2017

New Old Stock heater valve

Ever wonder why the heater control in almost every SAAB 99 is broken? First, the control in the dash is entirely plastic including a tiny post that is expected to push and pull on a Bowden cable to open and close the valve.

When the car was apart I worked on the controls and original valve. I cleaned up the Bowden cable and worked graphite into it. While it operates smoothly, the valve seal had degraded so it is impossible to turn off the heater completely. Wish I had found this part when I had everything torn apart, but maybe at the next coolant flush I’ll replace it.

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