Switching Fan Clutch to Electric Fan

[Leader1]

I have Envoy 2003, the cooling fan clutch got a problem, then the dealer change it with a heavy duty one. the new one is noisy and makes the car as I feel heavy.
Is it possible to switch the cooling fan to an electric fan? is it better for the car?
I heared the performance get better and the AC also get better, but it takes a lot of power???????????

Thanx

[jdmccright]

In general, I have heard it both ways...some say it helps, others say it doesn't.

IMO, if set up correctly, it should help performance of the engine and the A/C at least a little. The engine is not using power to turn the heavy fan and clutch. And when the A/C is running, the electric fan(s) should turn on as well to help cool the condenser (this may require a splice into the A/C clutch circuit). Finally, some fans can be adjusted to turn on at a different temperature than the thermostat (or the thermostat can be replaced with a lower temperature version allowing a slight performance gain), allowing a moving vehicle to naturally cool the coolant and lessening the electrical load.

Some will report that the reduced rotational mass will result in a feeling that the engine revs freer or feels peppier and slight performance improvement. The caveats are that they are sort of expensive for a good setup ($300 to $500) and rarely worth the power gained (3-6 HP), and sometimes require the altenator to be replaced with a heavy duty version to cope with the higher electrical draw.

If you are considering doing this and are not mechanically/electrically inclined, then pay to have it done. Hope this helps!

[Leader1]

Thanks and take care

[Jaynet]

Here you go. Give these guys a call - you may want to send them your PCM as well. Do some reading and research on this. Either way here is a fan kit specifically for the Envoy & Trailblazer trucks.
http://www.pcmforless.com/index.php?...d=74&Itemid=81