Heater temperature non-adjusting
My '98 2.0 156's heater has stopped responding. The car isn't a daily driver, & it's only as the weather's improved I've noticed it, as the cabin is now getting too warm, so how long the fault's existed........??
It's not at 'minimum' heat level, nor maximum. I don't think it's the air temperature sensor;- I have a spare one. Both of them measure in the 9k ohm region, & there is 12v on the feed plug.
I'm going on a long-ish trip next weekend, so a fix this week would be timely.
What can I check?