Last post on Jun 05, 2013 at 12:39 PM
You are in the Chevrolet Equinox
What is this discussion about?
Chevrolet Equinox, Fuel Efficiency (MPG), SUV
#142 of 202 Re: EPA MPG Test Proceedure [ohc6sprint]
Jan 08, 2012 (2:22 pm)
I get what you are saying, but frankly, if I could get even close to 25 mpg at any time with my 2011 Nox 4cyl AWD, I wouldn't be on this Forum looking for ideas and tracking discussions. I'm not interested in wasting my time online and I am certainly not a habitual complainer.
But when, over six months, the best I can manage with a tank is around 18.5-19.5 (with about 20.5 on highways and 17.8-18.2 locally), then I think the car is to blame, not me, my luggage, the weather, the road, the terrain or any other manufacturer excuse.
Visit One, I had the computer reflashed.
Visit Two, they performed the recall#11195 (rough idle poor driveability) and they "installed SOP cam phasers" and "updated calibrations".
Visit Three, they discovered an "engine warning P0011: failure of intake manifold cam phaser solenoid" which apparently caused the stalling issue (for me, at least).
After all those corrections (for which I am nonetheless grateful), the overall mileage still only hovers around 19.8.
My biggest hope now is a couple of contributors who have suggested that the AWD mpg will continue to improve up through 10,000 miles or more. I am only at 6,500 right now. Fingers crossed. At this point, if I could only get to seeing 21-22 overall, I would celebrate.
#143 of 202 Re: EPA MPG Test Proceedure [jan21816]
Jan 08, 2012 (10:09 pm)
Are you relying on your fuel computer for your averages and if so, have you verified it's accuracy on one or more fillups? Also, have you checked your odometer's accuracy using milemarkers on the Interstate or with a GPS?
If so, have you driven a short loop on the highway while maintaining a steady speed of 55 mph and zeroing your mpg figure at the start and returning to the same point and noting the figure?
If you did, and if you can't get in the high 20's, then I would say that you may have a mechanical issue. Could be engine related or a sticking brake caliper.
#144 of 202 Re: EPA MPG Test Proceedure [jan21816]
Jan 14, 2012 (7:26 am)
This note pertains to my prior comment about regularly getting 25 MPG City/Hwy average mileage in a 2011 FWD 4 Cyl. This past week, I exchanged cars with my wife. She got 21 MPG City/Hwy average mileage on the same vehicle! This vehicle has ~ 7500 Miles on it and has had the cam timing actuator replaced. My guess is my wife does more stop/stop, she waits in line when picking our kids up at school, and is heavier in the throttle when she accelerates. Since this is a 3800 lb. vehicle with just a 182 Hp engine, it has to work pretty hard when it accelerates or has to push a heavy wind when driven above 70 MPH. Chevy will probably upgrade the engine to its new 2.5 Liter 4 cyl soon, which is sized better for this vehicle, and will help it run more efficiently during acceleration and at speed. That being said, I am still very happy with this vehicle since it does everything much better than similar sized vehicles i owned prior to 2010. I also feel really safe in this SUV, which is important to me.
#145 of 202 Re: EPA MPG Test Proceedure [overtheedge]
Jan 14, 2012 (8:41 am)
HI have you used the instataneous setting on the trip computor , the reason I am asking is when I use mine while driving on a straight stretch of hwy cruise set It will fluctuate 7.2 8.9 10.3 9.6 but never where it should be to get what GM claims the dealer claims this is normal, other cars I have had that had a trip computor the instataneous reading always whent up or down slowly and a point at a time, what have you noticed wih yours.
#146 of 202 Re: 6 cyl mileage [geohov]
Feb 02, 2012 (6:32 pm)
Had my 2007 Equinox LT with the 6 for 92000 miles. On the highway, I get 23 to 26 mpg. Mixed mileage, I get 20 mpg. All wheel drive model costs me about 1 mpg over the FWD model. I suspect allignment issues on anyone who is getting less than 22 mpg on all highway. I measure MPG by distance on a tank of gass / gallons poured in to fill the tank.
#147 of 202 Re: EPA MPG Test Proceedure [rrovernut]
Feb 04, 2012 (6:46 am)
I normally use the average FE readout. Both the instantaneous and average are simply getting data from the fuel injection system fuel metering system, so the software is making FE projections based on average fuel mass/sec per voltage and frequency signal input associated with throttle position, and other variables (temperature and altitude). Depending on the mileage, or other variables such as grade, wind, load, ect., on your vehicle, this readout will vary. I agree the instantaneous readout uses refresh frequency that might be too high for most folks. My vehicle is usually used around town and I am light on the throttle, so I get it to behave well. My wife, is another matter!
#148 of 202 Re: Expected better miles per gallon? [rrovernut]
Feb 05, 2012 (4:57 pm)
Im very interested in your new computer chip results. Are you driving a 6 or 4 cylinder?
#149 of 202 Re: Expected better miles per gallon? [n9las]
Feb 05, 2012 (7:40 pm)
Hi we have the 4 cyl , have not had a good chance to test any improvments , I used PERFORMANC CHIP , recommended and proven to get up to +6 mpg , the wires to use are LT BLUE -LAT TAN -GRD
#150 of 202 Re: Expected better miles per gallon? [rrovernut]
Feb 06, 2012 (9:16 am)
Thanks for your reply. I also have a 4 cyl, and may install a chip if you see a increase in mpg.
#151 of 202 Re: Expected better miles per gallon? [overtheedge]
Feb 09, 2012 (9:54 am)
I am clueles to the mechanical efficency of the ZF 9 Speed auto developed for moderate power FWD but the ZF 8 Speed RWD Auto is one of the most efficient trqnsmissions developed. Mazda's new 6 Speed Auto is another example of top noth mechanical eff. I'm a mechanical engineer and like to dig into this stuff.
It is in the arragement of the planetary drives and redefining what a torque converter is supposed to do. These are not traditional slush boxees, but more mechanical direct transmisions that just use the torque converter not so much for torque multiplication but to allow the tansmission to stay in gear at very low engine speeds, and along with dampeners, to mometarily ease the shock during shifts.