Fuel efficiency improvements

[SunlitComet]

I've always suspected that is why the Toyota Landcruisers with diesels get such great gas mileage. Hmmm...what happens if I put a diesel in the Tahoe, change the gearing, and add skinny tires?

Model T on steroids?


http://alldatadiy.com/buy/index.html

They have the diesel info to if you select the diesel option when purchasing.

---------- Post added at 05:21 PM ---------- Previous post was at 05:20 PM ----------

if you need info I got just let me know I feed it as needed.

 

[Firstoneman]

Model T on steroids?

Having spent time in Southern Africa and Mozambique - those are the bomb man. They are definitely the most durable and DEPENDABLE vehicles. Land Rovers are by far the most proliferated there, but the LandCruisers are favored if you can get one. Interesting note: Ford trucks are gaining popularity (insanely expensive), Jeeps are viewed as untrustworthy (though they LOVE the branded Jeep clothing and gear), not a Chevy on the road. Mercedes G class vehicles are also revered for incredible durability - the ones spec'd for UN. Diesels preferred.

http://alldatadiy.com/buy/index.html

They have the diesel info to if you select the diesel option when purchasing.

---------- Post added at 05:21 PM ---------- Previous post was at 05:20 PM ----------

if you need info I got just let me know I feed it as needed.

Thanks. This is a cool option. I might take you up on your offer. But will also consider buying a subscription. I have a tendency to hang on to my vehicles for a long time - so I'd probably buy the 5 year if keep the Tahoe.

Cheers!
D

 

[Firstoneman]

Model T on steroids?


http://alldatadiy.com/buy/index.html

They have the diesel info to if you select the diesel option when purchasing.

---------- Post added at 05:21 PM ---------- Previous post was at 05:20 PM ----------

if you need info I got just let me know I feed it as needed.

Any chance you can send me the info for changing out the spider? I am just now going to go Texas to pick up the '99 Tahoe (my wife injured her back the week before we were to go in August, so we never did go). I want to see if i can do the work and get an idea of what the alldata info looks like. Thanks in advance (I guess that's TIA)!!
Cheers!
D

---------- Post added at 01:53 AM ---------- Previous post was at 12:35 AM ----------

^ yes that could help.

Also might not hurt to seafoam your intake.

Do you have any instructions on how to do this?
Thanks.
D

 

[IRQVET]

With my stock height 2 door I average 15 MPG between city/highway.

(Disclaimer: It was in 120 degree heat with A/C blowing full blast.)

 

[Firstoneman]

Injectors for my Tahoe

Is this the right product for the Tahoe:
http://www.amazon.com/Delphi-FJ10566-Fuel-Injector/dp/B000TYLIFS

Thanks.
D

 

[gregsb]

That's the one you want.

 

[Firstoneman]

That's the one you want.

Okay. Thanks.
D

 

[scottvan]

I have a stock 2004 Tahoe LS I bought a week ago with 156K miles and I'm getting 13.5 MPG.

 

[SunlitComet]

Since this thread has been awoken again. I now have 18mpg. highway.

 

[JubjubW]

18-19 city 24-25 highway...

but that goes down depending on how much i like my tailpipes that day

 

[retorq]

I'm right at 11.

 

[_Dylan_]

18-19 city 24-25 highway...

but that goes down depending on how much i like my tailpipes that day

 

[SunlitComet]

18-19 city 24-25 highway...

but that goes down depending on how much i like my tailpipes that day

Seems a little far fetched even if you engine was brand new with synthetic fluids everywhere.

---------- Post added at 05:13 PM ---------- Previous post was at 05:12 PM ----------

I'm right at 11.

What the hell is going on with yours?

 

[Stresst]

Seems a little far fetched even if you engine was brand new with synthetic fluids everywhere.

A little? LOL! Its impossible! But I am not gonna start arguing again with people who have no clue! SMH.....

A 2wd 2 door with the 273 gears isnt capable of 25mpg......Just saying.....

 

[SunlitComet]

Dude, how is the a/c treating you?

 

[99TanHoe]

Went on a short (150 mile round trip) interstate hwy trip yesterday from Lake Charles, La to Lafayette, La and back. This the first time I've had it on the highway since the 4.56 gears were installed.

It was all flat land driving with the cruise control set at 71mph (tach @ 2300rpm) the majority of the trip except when I had to pass a jerk here and there.

I got just under 14mpg, if you throw out the 10 - 20 miles or so that I spent driving around in Lafayette and Lake Charles I would estimate 14mpg for just the hwy portion of the tank. I normally get about 12.7 - 13mpg with mixed driving.

I guess I can live with that until I can do some fuel eff/performance mods. The poor MPG is the trade off for driving a lifted Hoe with oversized tires.

 

[Stresst]

Dude, how is the a/c treating you?

I got rid of that truck about 3 weeks ago......picked up a 07 Denali.

I have to admit the a/c in this truck is like NO OTHER car/truck that I ever owned!

 

[992dr]

18-19 city 24-25 highway...

but that goes down depending on how much i like my tailpipes that day

 

[SunlitComet]

I got rid of that truck about 3 weeks ago......picked up a 07 Denali.

I have to admit the a/c in this truck is like NO OTHER car/truck that I ever owned!

yeah the obs a/c were not really the best they could have been.

 

[BigDaddy13440]

Have made about 15 trips from Upstate NY to about an hour from Philly, just about 275 miles each way. Best I ever got was about 14.5, worst was probably 13.0. Mixed driving conditions, from 90+ degree heat to 20* cold, from cruising at 78mph behind truckers, to barely 65mph (construction traffic), all through the mountains of Route 81. Will be crossing the 200K mark on my next trip down, original engine and tranny...

But, having a new spider assembly put in before I leave, along with a new fuel filter. Running Seafoam through the tank on the way down (have run about 24oz of it about every 3-4 months for the last year, full 30 gallons in the tank), and just recently ran Seafoam through the intake (thought maybe it would clear my rough idle, no luck, time for the spider).

Will see how much/ if any mileage improvements the spider/fuel filter makes. On Kumho Mojave AT's, 285/75/16's w/ 1/4" of tread left, filled to 50psi....

Currently, running around town (stop and go, 3-4 miles at a time), with the occasional 20 mile jaunt to Utica, and then back - getting a combined 12-12.5mpg.