How-to: S13 JDM Digital Climate Control

[Broadfield]

Originally Posted by Ragnarok043

i remember reading in one of the writes up that the problem is caused by the sensor grounding. you can test by unbolting the sensor while its running, it should stop running at full blast.

Yes, you have to grind down the fins on the thermo sensor. In most cases the fins ground out on a line behind it and cause the blower to run full tilt.