It seems my cooling fan kicks on about every 10 seconds and then shuts off. The AC Clutch does the same thing......Not sure why this is happening. I'm pretty sure the fan kicking off and on so frequently is an issue. Where do I start? I've owned the jeep for about 4 months now and I'm slowly fixing odds and ends. It's a '98 Cherokee Classic with the 4.0....
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Not sure what is going on.......
- Thread starter SgtMojo67
- Start date
- Location
- In the islands
It will do that if the AC controls is set to defrost. The AC compressor and the fan is triggered by the ECM to dry the moisture from the air going to the windshield in order to speed up the defrost time.
iluv83vettes
NAXJA Forum User
- Location
- Houston
Mine does that no matter what setting I have the air on (heat or a/c). Doesn't matter what setting I have for where it's blowing.
mopar440
NAXJA Forum User
- Location
- Jefferson, Oregon
Most vehicles operate this way... when in defrost mode, AC kicks in to help with defrosting ... poster with AC and cooling fan coming on no matter what vent is selected has an issue...
Talyn
NAXJA Forum User
- Location
- Radford, Communistwealth of Virginia
Thats not normal, especially on just heat.
ParadiseXJ
NAXJA Forum User
- Location
- Paradise, CA 95969
It's not whether the A/C or the heat is on...if the heat is on and the "mode" is defrost it'll kick on...and off. If your compressor is kicking on when the heat is on any other setting or "mode" (floor, vent, front etc.) and not set to defrost then something is awry.
iluv83vettes
NAXJA Forum User
- Location
- Houston
I was talking about the electric fan, not the the compressor.
Matthew Currie
NAXJA Member #760
- Location
- Vermont, land of big clay
I'm not sure about older versions, but in yours the temp switch on the fan is bypassed, and it always runs with the compressor.
If it's coming on for very short periods very often, this can be a sign of low refrigerant. Worth checking.
