What is the bottomline (MPG) on electric fans?

[DavidAragon]

Hi,
I’ve heard a lot of things and since I’m not a super mechanic I would like to get some actual ‘real world’ results before I go buying fans and trying to rip out my fan to install an electric.

If you have an electric fan – what was the MPG increase (decrease)?

Thanks,
David

[DavidAragon]

Hi,
I’ve heard a lot of things and since I’m not a super mechanic I would like to get some actual ‘real world’ results before I go buying fans and trying to rip out my fan to install an electric.

If you have an electric fan – what was the MPG increase (decrease)?

Thanks,
David

[DavidAragon]

Hi,
I’ve heard a lot of things and since I’m not a super mechanic I would like to get some actual ‘real world’ results before I go buying fans and trying to rip out my fan to install an electric.

If you have an electric fan – what was the MPG increase (decrease)?

Thanks,
David

[HummerLV]

electrics and water holes don't mix.
been some posting on this very subject.
http://elcova.com/groupee/forums?a=tpc&s=2826088551&f=6706011751&m=642103837

[PARAGON]

If you want a H2 and you want to get better gas mileage, switch out the front and rear ends for 3.73s instead of the 4.10s.

Aside from that, very few things are going to impact the gas mileage enough to pay for themselves.

The Denali and the Escalade both run the same engine as the H2 and weigh nearly the same but both get better gas mileage as their gearing is higher. They also aren't worth crap off road.

[KenP]

HUMMERLV, thanks for bringing that up.

David, skip the fans it you are looking for a MPG increase. I saw none what-so-ever. Furthermore, I really was unable to determine any HP increase. If my truck was for drag racing only I would still have them. But it is not, so I don't.

Here is a link to more pics and a clip of the near disaster.
http://elcova.com/groupee/forums?a=tpc&s=2826088551&f=2606011751&m=127107937

Again, I would recommend against them unless you drag race only.

[DavidAragon]

Hi,
Thanks - what about that coolant tube that runs from the radiator to the throttle body... I don't want to make any mods for more power just MPG... would that do anything?

Thanks,
David

[Klaus]

Yes, it will allow your throttle body to freeze in cool, damp weather.

It is a 7,000 pound plus (with added accessories) square vehicle. It takes gas to move it - I did not buy it for the mpg value.

[HGW]

There is absolutely no payback in gas mileage with electric fans, just some improved throttle response---you would barely feel it, if ever. You will never pay for them with reduced cost at the pump.

Ken P has a link to the drawbacks aleady posted.

The fans help a tiny bit in a 1/4 mile run if you are into that type of fun.

Do not disconnect your throttle body coolant supply unless you remember to hook it back up when it gets cold out---good point Klaus.

Guys who race may disconnect it for that little extra edge---but please hook it back up. They also ice their intercooler reservior and run a 160 thermo but these items are for another post.

Hope this helps.

P.S. It IS a 7K bus designed for good (or great--sorry off road fans) off road capability.

I have a Honda for improved "average" gas mileage on the road.