Second fan
#2
Senior Member
It should come on over ~217°F or when you're running the A/C or Defroster. What year XJ?
https://www.cherokeeforum.com/f2/att...osting-268677/
https://www.cherokeeforum.com/f2/att...osting-268677/
#5
CF Veteran
Pulling the connector off the thermostat sensor turns on fan in a 92. , as does turning on ac or defrost..ONLY if there is enough freon to engage the ac compressor clutch. Pulling the sensor connector will trip a check eng light /code
Last edited by bluejeep2001; 03-20-2023 at 07:53 PM. Reason: More info
#6
CF Veteran
Pulling the connector will tell you straight away whether the fan's working (but not, of course, if it's coming on when it should). I didn't mention the CEL because you wouldn't know, as you can't see it from under the hood & having reconnected it, the light will operate normally after the next start.
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