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will it hurt anything to run the defroster with NO auxillary fan?
- Thread starter 90Pioneer
- Start date
snail
NAXJA Forum User
- Location
- North Jersey
No it won't. The way I'm currently running is that my aux fan only comes on when I flip a switch, and I run the defrost without doing so.
No it won't.
X2
In defrost the AC tends to dry the air blowing onto windshields..This helps more as a defogger when the air is not frozen yet and can still be quit damp. Dry warm air pulls more fog off the windshield better then damp warm air.
By this time of year (in Ohio anyway) the air is so dry and cold.
1. The there is little dampness to pull out of the air. The AC part of the defroster job is of little help.
2. The air outside is so cold the AC condenser really don't need the fan to stay cool anyway.
3. I don't think the ECU can tell if the fan is even there.
X2
In defrost the AC tends to dry the air blowing onto windshields..This helps more as a defogger when the air is not frozen yet and can still be quit damp. Dry warm air pulls more fog off the windshield better then damp warm air.
By this time of year (in Ohio anyway) the air is so dry and cold.
1. The there is little dampness to pull out of the air. The AC part of the defroster job is of little help.
2. The air outside is so cold the AC condenser really don't need the fan to stay cool anyway.
3. I don't think the ECU can tell if the fan is even there.
It my 97 I pulled the aux fan and relay. Check engine light came on.
In my 99 the relay is still there but the fan is removed. No CE light yet,but I also havent tried to use the fan.
hubs97xj
NAXJA Forum User
- Location
- Fort Wayne, IN
The PCM doesn't know what the fan is doing, but it does know when the relay is missing. Was the CEL P1491?
