Low MPG - Chevy Traverse Forum: Chevrolet Traverse Forum
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post #1 of 17 (permalink) Old 11-14-2019, 11:49 PM Thread Starter
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Low MPG

I have low MPG around 11.5 MPG combined, done 40000 Miles Only , Air filter new , about to change spark plugs for 1st time next week.
any suggestion e.g. clean the front O2 sensor.
already cleaned MAF and MAP sensors .

2013 Traverse LT AWD Iridium
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post #2 of 17 (permalink) Old 11-15-2019, 12:34 PM
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Can you post your shift points.
and what is your engine RPMs at 55, 65?

2010 FWD LT1-Gold Mist Metallic- seats 8.
Build Date- July 31, 2009-2nd day of Spring Hill 2010 production.

2013 Equinox 3.6L - 88,000
2010 Traverse 3.6L- 153,000
2003 Trailblazer 4.2L- 181,500
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post #3 of 17 (permalink) Old 11-15-2019, 03:28 PM
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Is this a new thing or has it always been that way? Do you drive in the city a lot or lots of short drives?

Current Vehicles:
-2015 Pilot EX-L AWD
-2014 Traverse LT2 AWD
-1961 Impala 2 Door Sedan 283 3MT

Family Muscle:
-1969 Camaro SS 350 4MT
-1957 210 2 Door Wagon (project)
-1939 Ford 3 Window 2 Door (project)

Past Vehicles:
-2008 Sonata SE V6
-2012 Silverado LS 4.8 4WD EC
-2011 Rogue SL AWD
-2006 Accord Sedan EX-L K24 5MT
-2012 Tacoma DCSB V6 6MT 4WD
-2011 Civic Si Sedan
-2001 Pathfinder VQ35 5MT 4WD
-1997 Pathfinder VG33 4AT 4WD
-1999 ML320 4WD
-1997 Accord LX Sedan F22 4AT
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post #4 of 17 (permalink) Old 11-15-2019, 11:03 PM Thread Starter
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Quote:
Originally Posted by rbarrios View Post
Can you post your shift points.
and what is your engine RPMs at 55, 65?
Yes I need to do more testing .

2013 Traverse LT AWD Iridium
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post #5 of 17 (permalink) Old 11-15-2019, 11:04 PM Thread Starter
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Quote:
Originally Posted by cintocrunch View Post
Is this a new thing or has it always been that way? Do you drive in the city a lot or lots of short drives?
Yes , Mostly in the City and lots of short drives, it has been like this since a year.

2013 Traverse LT AWD Iridium
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post #6 of 17 (permalink) Old 11-16-2019, 05:18 PM
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oxygen sensors are almost always replaced after 100,000 miles, they are wear item.
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post #7 of 17 (permalink) Old 11-18-2019, 12:18 PM
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Garage
Stop jamming the gas pedal and have the car shift at lower RPMs
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post #8 of 17 (permalink) Old 11-19-2019, 07:56 PM Thread Starter
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Update : I have replaced the spark plugs , now i will be monitoring it for few days.

2013 Traverse LT AWD Iridium
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post #9 of 17 (permalink) Old 11-20-2019, 11:03 PM
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Respectfully harry54,
You have done many things including having just changed plugs, which means you are very hands on....
So I apologize if some of my ideas are dopey,
I am inquiring into your diagnostic journey.

My wife drives a 2012 AWD, and she now is getting 16.3 mpg, up from 15.1 about 2 months ago.... I had her intake valves walnut blasted.....at about 79k miles. (And new plugs since we were in there already)
Her average trip is 10 minutes, stop and go driving in the "burbs" with the occasional 45 minute highway blast to go to a shopping mall or visit our kids......

So I concur, your milage is low.


My 2 cents
Are you using top tier gasoline? ( top tier, includes regular gasoline...it does not imply mid grade or premium.) if not, only use only top tier.

Regardless, ^^ , try a few tanks of shell premium, or chevron premium..... it will clean carbon from fuel injectors and clean any carbon build up on upper piston ring. I know it's an extra 80 cents per gallon , and definitely not worth it on an mpg basis, I suggest it for its cleaning of carbon benefits

also before your next oil change, run a tankful of Techron fuel system treatment, it has PEA, and is similar to what GM sells at dealership, and it is good for the plastic parts of your fuel system, will clean fuel injectors and will clean carbon off upper piston ring...
You need to change your engine oil after you do this... piston blow by and the PEA, will contaminate the engine oil....
then make sure you use dexos approved 100% synthetic engine oil.


It should go without saying ... but .. you need to check engine oil levels every 1000 miles, then more often when oil consumption is detected, after all all gdi (gas direct injection) engines will eventually burn oil.

When was the last time you cleaned your throttle body?
I know you were looking at it when you changed your plugs...
Lots of crankcase gunk gets into your air box ( between air filter and throttle body) since the clean side PCV has reverse flow under wide open throttle., which deposits crankcase gunk into airbox.
inspect the air box and clean the crankcase goop, I am sure you did this, since you had to remove intake manifold to change plugs.... was your air box oily?

And by the way, how were your spark plugs?

Did you look at your intake valves ? While you were changing your plugs?

Tire pressure? Make sure your tires are pumped up to 36 psi, don't rely on the cars tire pressure monitor for accuracy, buy the $30 Michelin tire pressure gauge, accurate to 0.1 psi.....

And finally, since you are asking about O2 sensors,
do you have the $70 OBDlink mx+ Bluetooth device that you can pair with your iphone?
You can see o2 sensor voltages as you drive,
fuel trims, engine temperature and other parameters,
that might help find root cause of lower mileage......
In addition to seeing all gm codes, . ,,,,, if any are thrown.

I have one ^^ , if you wanted to know about any specific parameter, to compare your parameter values, I could let you know what I am getting on the 2012 traverse....

2012 Traverse AWD (80k miles) with Elite E2 X catch can
Three Equinox AWD, 2013, 2016, and 2016 (all are 2.4 liter, 4 cylinder engines)
2017 Equinox AWD, 6 cylinder engine, with Elite E2 X catch can
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post #10 of 17 (permalink) Old 11-21-2019, 09:06 AM
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Quote:
Originally Posted by Threenox View Post
Respectfully harry54,
My wife drives a 2012 AWD, and she now is getting 16.3 mpg, up from 15.1 about 2 months ago.... I had her intake valves walnut blasted.....at about 79k miles. (And new plugs since we were in there already)
Not trying to totally derail this thread as this could be relevant... how much was the walnut blasting? It's one of those mysterious things that noone seems to post the price paid.

Current Vehicles:
-2015 Pilot EX-L AWD
-2014 Traverse LT2 AWD
-1961 Impala 2 Door Sedan 283 3MT

Family Muscle:
-1969 Camaro SS 350 4MT
-1957 210 2 Door Wagon (project)
-1939 Ford 3 Window 2 Door (project)

Past Vehicles:
-2008 Sonata SE V6
-2012 Silverado LS 4.8 4WD EC
-2011 Rogue SL AWD
-2006 Accord Sedan EX-L K24 5MT
-2012 Tacoma DCSB V6 6MT 4WD
-2011 Civic Si Sedan
-2001 Pathfinder VQ35 5MT 4WD
-1997 Pathfinder VG33 4AT 4WD
-1999 ML320 4WD
-1997 Accord LX Sedan F22 4AT
cintocrunch is offline  
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