Hi All,

Please tell me what should be an engine coolant temperature to make cooler fan go on? (2006 Cobalt LS, 2.2)
I have a feeling that mine does not work at all.

Thanks

 

put a toggle switch to it, search the how to's i think theres one on how to do that

 

is your car running hot? the fans turn on at about 210 or something like that.... mine was running hot so i mean this should be intresting....

 

dont worry about it till it gets near 260ish

 

Here's an insert out of the "Cooling System Description and Operation" on GM's Service Information site.


The ECM commands Low Speed Fans ON under the following conditions:

• Engine coolant temperature (ECT) exceeds approximately 106°C (223°F).

• A/C refrigerant pressure exceeds 1 310 kPa (190 psi).

• After the vehicle is shut off, the ECT at key-off is greater than 140°C (284°F) and system voltage is more than 12 volts. The fans will stay on for approximately 3 minutes.

The ECM commands High Speed Fans ON under the following conditions:

• ECT reaches 110°C (230°F).

• A/C refrigerant pressure exceeds 1 655 kPa (240 psi).

• When certain DTCs set

 

uh, I hear mine start before that and I always freak out when it gets about 96C.

Sometimes I even turn 'em on manually with my dashhawk to cool it down a 'lil

I guess I'll sleep better now, thanks and +rep for an info I wanted for a long time.

are those stats valid for the 2,4 too though?

 

It shows the same stuff for all the engines. Here's the actual page from GMDealerworld.com on the cooling description.

http://fr33k.5gbfree.com/cooling.htm

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