2010 Tundra MPG Drop, need help - TundraTalk.net - Toyota Tundra Discussion Forum
User Tag List

 
LinkBack Thread Tools
#1 (permalink) Old 01-07-2013, 11:49 AM
Junior Member
 
Join Date: Dec 2009
Location: Conroe, Texas
Posts: 20
Thanks: 0
Thanked 9 Times in 7 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
2010 Tundra MPG Drop, need help

I have a 2010 DC, 4.6l, with 91,000 miles. and the past three tanks of gas I have noticed my mpg has dropped way off. I usually get 19-20 mpg with 90% of my driving highway.

As I am figuring now I'm getting about 13-14 mpg. I've done nothing different and do not know why I'm seeing this. On Saturday I changed my plugs and cleaned my MAF Sensor. since then I filled up and have drove 90 miles today and have used a 1/4 of a tank.

Up to now I have had no issues with my truck at all. Any help would be appreciated.
rance23 is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 01-07-2013, 12:37 PM
Senior Member
 
Join Date: Jun 2012
Posts: 201
Thanks: 0
Thanked 123 Times in 76 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
hook it up to the techstream...see if ur getting a fault in sensor (o2) or intake lose
bodio is offline  
#3 (permalink) Old 01-07-2013, 12:53 PM
Moderator
Premium Member
 
Slate CrewMax's Avatar
 
Join Date: Jan 2009
Location: Oregon
Posts: 2,852
Thanks: 211
Thanked 1,646 Times in 861 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 15 Post(s)
If you are just basing it on miles driven versus the movement of the gas gauge, it is really not accurate. The only sure way is to fill, drive, and fill again. Then divide miles/gallons.

2008 CrewMax Limited 5.7 / Slate Metallic
Slate CrewMax is offline  
#4 (permalink) Old 01-07-2013, 01:22 PM
Junior Member
 
KU_B's Avatar
 
Join Date: Dec 2012
Posts: 16
Thanks: 0
Thanked 7 Times in 6 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Garage
Quote:
Originally Posted by bodio View Post
hook it up to the techstream...see if ur getting a fault in sensor (o2) or intake lose
Are these fairly common problems?

Reason I ask is because I too have a 2010, but with the 5.7. I've had it about a month now and I am getting sub about 9.5 mpg about 80/20 city/hwy? And the last 2 tanks I was very cautious of my foot.

2010 Double Cab SR5 TRD Off Road 5.7L

KU_B is offline  
#5 (permalink) Old 01-07-2013, 01:35 PM
Senior Member
 
Warriorkm's Avatar
 
Join Date: Dec 2011
Location: Wolfeboro NH
Posts: 298
Thanks: 205
Thanked 345 Times in 163 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Garage
somethign has drastically happen to my truck too... 3 fills 100 miles to a half of a tank! cant figure it out

2011 RWDC-SUPER White
-remote start
-JVC In dash dvd/navigation
-Tonno Pro Cover
-Volant Intake
-Weathertech Mats
-AVS In-channel Vents
-True Dual Flowmaster 40 series Exhaust System
-Plasma Glow Sky Pod Cab Lights
-ZONE 5" Lift/ BDS shims/ CB 3" Shackles (7"total)
-35 Toyo MTS/18" Rockstars- 0 offset
-Hypertech Speedometer Calibrator
-Bushwacker Color Matched Riveted Fender Flares(Black Spikes)
-Alpine Speaker Upgrade/ 10" sub
Warriorkm is offline  
#6 (permalink) Old 01-07-2013, 01:36 PM
Senior Member
 
Join Date: Aug 2012
Location: Houston
Posts: 165
Thanks: 2
Thanked 149 Times in 83 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by rance23 View Post
I have a 2010 DC, 4.6l, with 91,000 miles. and the past three tanks of gas I have noticed my mpg has dropped way off. I usually get 19-20 mpg with 90% of my driving highway.

As I am figuring now I'm getting about 13-14 mpg. I've done nothing different and do not know why I'm seeing this. On Saturday I changed my plugs and cleaned my MAF Sensor. since then I filled up and have drove 90 miles today and have used a 1/4 of a tank.

Up to now I have had no issues with my truck at all. Any help would be appreciated.

WOW! You're doing some serious driving there bro. 91k miles on a 3 yr old truck. Not sure what the averages are for a 4.6l but my 5.7l is getting me in the 15 to 16 range.

Quote:
Originally Posted by KU_B View Post
Are these fairly common problems?

Reason I ask is because I too have a 2010, but with the 5.7. I've had it about a month now and I am getting sub about 9.5 mpg about 80/20 city/hwy? And the last 2 tanks I was very cautious of my foot.
Ouch!

2012 SilverSky CM Limited: TRD Shifter, aFe CAI, BedRug, Leer 550 Tonneau, TRD Sway Bar, V-LED interior, BAMuffler, WeatherTech Floor Liners (slowly but surely)

Next: Leveling kit, wheels, tires
Vipor is offline  
#7 (permalink) Old 01-07-2013, 02:07 PM
Junior Member
 
Join Date: Dec 2009
Location: Conroe, Texas
Posts: 20
Thanks: 0
Thanked 9 Times in 7 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Quote:
Originally Posted by Slate CrewMax View Post
If you are just basing it on miles driven versus the movement of the gas gauge, it is really not accurate. The only sure way is to fill, drive, and fill again. Then divide miles/gallons.
not basing it on gas gauge moment, just wanted to give you guys a idea.

And yes I do a lot of driving. it is not uncommon for me to leave my house and when i get back that night i'll have put over 500mi on.

The more research I do I keep hearing winter gas will drop your mileage quite a bit. As I am from Texas that is something that I'm not familiar with. but i has be unusually cold down here for the past month. Could I be filling up with this?
rance23 is offline  
#8 (permalink) Old 01-07-2013, 02:16 PM
Senior Member
 
The Onceler's Avatar
 
Join Date: May 2012
Location: New Hampshire
Posts: 644
Thanks: 87
Thanked 816 Times in 398 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I wonder if winter blend is nation wide, given that we Americans are prone to driving all over creation?

I am in the northeast. My 2010 has the 5.7 liter. I have been driving 100 miles per day virtually every day since Jan 1, 2012. That is about 90% highway miles. In the Summer, my mileage got as high as 18 mpg. My last tank was consumed at just under 14 mpg, so the combination of longer warm up times in the morning and "winter blend" has brought my fuel efficiency down a fair amount.

2010 5.7L SR5 TRD 4x4 DC ==
The Onceler is offline  
#9 (permalink) Old 01-07-2013, 04:42 PM
Senior Member
 
shaker428's Avatar
 
Join Date: Dec 2012
Location: Las Vegas Nevada
Posts: 325
Thanks: 284
Thanked 282 Times in 167 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
In Vegas we get our winter gas around October . There is always a sticker on the pump saying something like "this gas contains 10% ethanol" I'm not sure of the % or if it says ethanol but the gas is different and MPG's go down alittle. Your drop seems it is a combination of the winter gas and something wrong. I.E dirty air filter. etc,

2012 TRD RW DCSB, TRD Dual Exhaust, Undercover Tonneau, 35% Tint, Toyota Stainless Side Steps, BW's, WheelSkin, Info Buttons, Rear Seat back Tilt down, Katzkins, BHLM, Pillar tape delete, Carbon Filter Delete, TRD Air Filter, Air Flow Accelerator...
shaker428 is offline  
#10 (permalink) Old 01-07-2013, 04:47 PM
Moderator
 
Mickey's Avatar
 
Join Date: Jan 2008
Location: Jax
Posts: 13,470
Thanks: 2,293
Thanked 2,632 Times in 1,593 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Begining last month I did an 1,800 mile trip doing 80mph and avg 17mpg for the whole trip. Didn't reset either. Have 150,945 miles on my 07 CM 5.7.

MIDNIGHT RIDER



THIS TRUCK
CAN TAKE
A HIT
AND KEEP
ON TICKIN'
Mickey is offline  
#11 (permalink) Old 01-08-2013, 12:50 AM
Senior Member
 
Mike Hickman's Avatar
 
Join Date: Nov 2012
Location: San Antonio Tx
Posts: 363
Thanks: 295
Thanked 246 Times in 145 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
My 2012 TRD SR5 6" lift 35 / 12.50's I'm getting 10.9 and this bites with only 25 gal tank. I'm coming from a 06 F-350 diesel that had a 38 gal tank on 7" lift 36/13.50's getting 18 highway 13.5 city . Truck looks great runs great but ouch fuel cost is not what I was thinking .

2012 Tundra CM TRD SR5
6" Procomp on 35 12.5
ATX Ledge Toyo MT.
Mike Hickman is offline  
#12 (permalink) Old 01-08-2013, 01:12 PM
Senior Member
 
Join Date: Jun 2012
Posts: 201
Thanks: 0
Thanked 123 Times in 76 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
idk what mpg i get...whats a good app i can use for sybian6 i always forget to reset the trip when filling up i got 35s with 7.5 inch in the front and 6 in the back gas isnt aways on my mind(i dont like paying for it) buts its because i have the SICKEST truck in the parking lot haha
bodio is offline  
#13 (permalink) Old 01-08-2013, 01:16 PM
Senior Member
 
Join Date: Jun 2012
Posts: 201
Thanks: 0
Thanked 123 Times in 76 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by KU_B View Post
Are these fairly common problems?

Reason I ask is because I too have a 2010, but with the 5.7. I've had it about a month now and I am getting sub about 9.5 mpg about 80/20 city/hwy? And the last 2 tanks I was very cautious of my foot.
well u have 91k have u does service to the truck? things do get dirty and cause the vehicles to work harder then designed...hook up techstream...run some fuel cleaner a few times see where that gets u basically cost u about 25 dollars
bodio is offline  
#14 (permalink) Old 01-08-2013, 02:44 PM
Senior Member
 
Join Date: Jan 2012
Location: Eastern ,PA.
Posts: 498
Thanks: 129
Thanked 526 Times in 299 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Quote:
Originally Posted by rance23 View Post
I have a 2010 DC, 4.6l, with 91,000 miles. and the past three tanks of gas I have noticed my mpg has dropped way off. I usually get 19-20 mpg with 90% of my driving highway.

As I am figuring now I'm getting about 13-14 mpg. I've done nothing different and do not know why I'm seeing this. On Saturday I changed my plugs and cleaned my MAF Sensor. since then I filled up and have drove 90 miles today and have used a 1/4 of a tank.

Up to now I have had no issues with my truck at all. Any help would be appreciated.
Just wondering, how did you clean your MAF Sensor? Wipe it with a rag, use any kind of cleaning solvent on it? Any chance you damaged the MAF or the wires attached to it during the cleaning process? Does the engine run & idle now as it did before you did the maintenance on it? (ie not running rough or bouncing idle, etc)

I do agree with others that winter blend gas will decrease MPG. Also agree with bodio about hooking your truck up to techstream and checking for any codes/faults.

Charlie


2012 Tundra DC 4x4, 5.7L, Silver Sky Metallic, SR5 Pkg, Tow Pkg, OEM Towing Mirrors, Chrome Appearance Pkg, AM/FM/CD w/ MP3/WMA Playback, Rubber Flr Mats w/Door Sill Protector, A.R.E "CX" Cap, BedRug Bedliner, Tekonsha Prodigy Brake Controller, Seatcovers, Westin 6" Oval Nerf Bars

TWACCM #48
charlier is offline  
#15 (permalink) Old 01-08-2013, 07:43 PM
Junior Member
 
Join Date: Dec 2009
Location: Conroe, Texas
Posts: 20
Thanks: 0
Thanked 9 Times in 7 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Quote:
Originally Posted by charlier View Post
Just wondering, how did you clean your MAF Sensor? Wipe it with a rag, use any kind of cleaning solvent on it? Any chance you damaged the MAF or the wires attached to it during the cleaning process? Does the engine run & idle now as it did before you did the maintenance on it? (ie not running rough or bouncing idle,etc)
Cleaned it with CRC brand MAF sensor cleaner as per the directions.

The engine runs and idles fine before and after the maintenance.

Talked to the tundra tech today at the dealership. He said that he gets 2-3 calls a day about the mileage issues, and yes it is the winter fuel. Since it never gets that cold here it does cause an alarm when we do get a batch for unexpected cold temperatures

I'll just have let it run it course.
rance23 is offline  
Reply

  TundraTalk.net - Toyota Tundra Discussion Forum > Tundra Discussion > Tundra General Discussion


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome