Re: 3.9L V6 gas mileage/Electric Fan options

From: Josh Battles (josh.lists@omg-stfu.com)
Date: Wed Dec 28 2005 - 14:56:24 EST


On Wed, December 28, 2005 10:33 am, msnbcnnbcbs@hotmail.com wrote:
>
> Im currently doing about 220-240 miles before the low fuel light comes on [15
> gal tank]. I'm trying to to cut back on my fuel bill every month and was
> wondering, throwing caution to the winds on losing power, as I'm more
> interested on improving efficiency at this point :P if

You've only got a 15 gallon tank? I didn't think they put anything smaller
than an 18 gallon in a Gen III. Mine's got a 22 gallon, and I get about a
270 mile range out of that. If you're getting 240 out of 15 gallons that's
not too bad at about 15 mpg.

> 1. Installing an electric fan would increase the engines fuel efficiency to
> warrant the hassle and cost and

Not by the numbers I crunched a few years back. Prices may have gone down by
now, but it's still a tossup if you'll save much in fuel. It'll probably
give you 1 - 2 mpg at most.

> 2. Returning the Tstat to the stock 195 would be prudent/usefull to improving
> the engines fuel efficiecy.

Not for my application. It may be different for you but my economy remained
unchanged with both the 195 and 180 stats in there. I run a 180 all year
now.

> If you reccomend an electric fan, please point one out to me, Im not sure
> what it is I need

If it was me, I'd do the Viper fan. Check Don's website, IIRC he's got all
the part numbers listed. www.y2kota.us

> My dak:
> 99 RC 3.9LV6 auto
> Fastman V6 TB
> Intense Performance intake
> Flowkooler Waterpump & 180tstat
> Everything else stock

Is your truck a 4x4? What trans (auto/manual)? Stock height? Bedcover?
Gear ratio?

I found that my biggest gains in economy came when I lowered the truck and
put a bedcover on it. The next biggest gain was when I went to the
Superchips PCM program. I get about 16 - 18 city and anywhere from 22 - 24
on the highway.

For me it was actually more cost-effective to buy another vehicle to commute in.

-- 
- Josh
www.omg-stfu.com



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