Stock fan question

[TURBOV6]

There is three wires at the fan, I removed the resistor and paralell the two wires together. Now the fan turn on HIGH while the car is running with the temp over 160. So when normally when the car warms up I assume it on low speed. Anyone know if Joe's chip turn off the fan at a certain speed, and since I removed the resistor does it affect anything else?

 

[Steve Wood]

That's right, the chip controls the low speed side of the fan. The AC and/or the fan temperature sensor turns on high speed.

When you bypass the resistor, the fan will always blow on high speed whether commanded by the ecm or the AC/fan sensor.

I suspect Joe turns the fan on around 160. Most do altho at least one turns the fan on immediately for some reason.

 

[TURBOV6]

Should I put it back?

I was thinking of putting it back, its kinda anoying when its on high at idle. But you know which wire go where? Its all black and I forgot which of the wires go back to where


I assume the wire without the resistor is the ground and the other two is the low an the high speed from the relay.

Anyone know whats the resistor value?

 

[Steve Wood]

Turn the radio up! You should listen to the sound of twin Spals...make you feel better. Many of us have it as you do.

black is ground
black/pink is high speed
black/red is is low speed and goes thru the resistor.

Don't recall what the resistor is ohm wise....dollar wise, it is high from GM if they still have.

 

[TurboDave]

Leave it as is. Having it run on high all the time like it is now isn't going to hurt anything at all, and surely will help cooling on the hot days in traffic!!