Good morning. I have noticed that whether I am on side streets or the highway my MPG seems much lower than it should be. I also want you to know I stop the auto-idle if that could contribute. No matter where I drive my mpg averages 19-21mpg. It is under warranty until January so I prefer to take it to my local Honda Dealer. The person I spoke with didn't seem too concerned about it, said they would look it over but he wasn't sure if they could do anything. I made an appointment but now I am second guessing. I have an auto shop I trust that I have been using exclusively for 12 years but I didn't want to start going there until the warranty ends. Does this sound low to you? There is another local dealer, do you think perhaps I should call them and see if they could look at it? Thanks in advance.
Figureguy
161 - 171 of 171 Posts
Which is what I'm probably going to do. But I don't understand what could be causing it that can't be corrected.
I am quite a ways away. The major issue is that Bob Johnson went out of their way over their policies to let me keep a loaner I could drive 93 miles away. I can try Ralph Honda, but must Honda dealerships don't have loaners and only shuttles. Garber needed 2 days to fix it. Without a loaner I couldn't do it.
I still think you have a stuck open thermostat. That will cause the engine to think it is cold and add fuel to each cylinder to get it up to operating temperatures.
A cheap way to find out is to get an ODBII bluetooth module and phone software and monitor the engine temperature with it.
I bet it never gets to 185 - the optimum for the 1.5L engine. At 140 you will get 20 Mpg at 185 you should get 32 Mpg.
Here are some choices and reviews of OBDII Bluetooth for phones.
obdstation.com
Here is one that is less than $25
A cheap way to find out is to get an ODBII bluetooth module and phone software and monitor the engine temperature with it.
I bet it never gets to 185 - the optimum for the 1.5L engine. At 140 you will get 20 Mpg at 185 you should get 32 Mpg.
Here are some choices and reviews of OBDII Bluetooth for phones.
The 10 Best OBD2 Apps For 2023 (iOS/Android)
Want a great app for car diagnostics? Read on for in-depth reviews of the 10 best OBD2 apps for Android and iOS so you can easily decide which is the right one for you.
obdstation.com
Here is one that is less than $25
Amazon.com: OBD2 Scanner Reader Bluetooth Wireless Auto Diagnostic Scan Tool for iOS & Android for Performance Test Bluetooth 5.4 Car Check Engine Car Code Reader, Clear Error Code Live Data Reset Exclusive APP : Automotive
Buy OBD2 Scanner Reader Bluetooth Wireless Auto Diagnostic Scan Tool for iOS & Android for Performance Test Bluetooth 5.4 Car Check Engine Car Code Reader, Clear Error Code Live Data Reset Exclusive APP: Code Readers & Scan Tools - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com
That one for 25 is actually on sale for 21. How easy is it to set up and how easy is it to navigate and understand the results on the app? Not that you might have even had one yourself but if you did even have one similar to go over how they work.I still think you have a stuck open thermostat. That will cause the engine to think it is cold and add fuel to each cylinder to get it up to operating temperatures.
A cheap way to find out is to get an ODBII bluetooth module and phone software and monitor the engine temperature with it.
I bet it never gets to 185 - the optimum for the 1.5L engine. At 140 you will get 20 Mpg at 185 you should get 32 Mpg.
Here are some choices and reviews of OBDII Bluetooth for phones.
The 10 Best OBD2 Apps For 2023 (iOS/Android)
Want a great app for car diagnostics? Read on for in-depth reviews of the 10 best OBD2 apps for Android and iOS so you can easily decide which is the right one for you.
Here is one that is less than $25
Amazon.com: OBD2 Scanner Reader Bluetooth Wireless Auto Diagnostic Scan Tool for iOS & Android for Performance Test Bluetooth 5.4 Car Check Engine Car Code Reader, Clear Error Code Live Data Reset Exclusive APP : Automotive
Buy OBD2 Scanner Reader Bluetooth Wireless Auto Diagnostic Scan Tool for iOS & Android for Performance Test Bluetooth 5.4 Car Check Engine Car Code Reader, Clear Error Code Live Data Reset Exclusive APP: Code Readers & Scan Tools - Amazon.com ✓ FREE DELIVERY possible on eligible purchaseswww.amazon.com
If you can work a smart cell phone - you can figure it out - not hard.
There are generic apps too You can use the least expensive ODB II dongle with free torque and the pro version is $5.
play.google.com
Plenty of demos in YouTube on using torque
This one is $5 on ebay
There are generic apps too You can use the least expensive ODB II dongle with free torque and the pro version is $5.
Torque Lite (OBD2 & Car) - Apps on Google Play
Measure vehicle BHP & Torque Clear car OBD DTC faults, View data in Google Earth
Plenty of demos in YouTube on using torque
This one is $5 on ebay
ELM327 OBD2 Code Reader Bluetooth Auto Diagnostic Tool OBDII Scanner | eBay
Super Mini ELM327 OBD2 OBDII Bluetooth Auto Car Diagnostic Interface Scanner, Easy to take. Product type: Mini ELM327 V2.1 OBD2 II Bluetooth Car Auto Diagnostic Interface Scanner Tool. 1 x Mini ELM327 V2.1 OBD2 II Bluetooth Car Auto Diagnostic Interface Scanner.
www.ebay.com
Thank you. I think I'm going to pick up that one for $21 on Amazon and see what happens.If you can work a smart cell phone - you can figure it out - not hard.
There are generic apps too You can use the least expensive ODB II dongle with free torque and the pro version is $5.
Torque Lite (OBD2 & Car) - Apps on Google Play
Measure vehicle BHP & Torque Clear car OBD DTC faults, View data in Google Earth
Plenty of demos in YouTube on using torque
This one is $5 on ebay
ELM327 OBD2 Code Reader Bluetooth Auto Diagnostic Tool OBDII Scanner | eBay
Super Mini ELM327 OBD2 OBDII Bluetooth Auto Car Diagnostic Interface Scanner, Easy to take. Product type: Mini ELM327 V2.1 OBD2 II Bluetooth Car Auto Diagnostic Interface Scanner Tool. 1 x Mini ELM327 V2.1 OBD2 II Bluetooth Car Auto Diagnostic Interface Scanner.www.ebay.com
Let's go back to square one.
Assuming you drive 15000 miles per year and the difference in gas mileage is 10MPG below what you think you should be getting, you're using 150 gallons per year more than you think you should. If gas is $4 a gallon, you're spending $600 more per year (plug in your own numbers.) If you really love the car other than this issue, is it really worth the angst? And if you want to sell it try selling it on Craigslist or EBay and name your price and don't settle for anything below what you paid less maybe $1000 for your use thus far.
Assuming you drive 15000 miles per year and the difference in gas mileage is 10MPG below what you think you should be getting, you're using 150 gallons per year more than you think you should. If gas is $4 a gallon, you're spending $600 more per year (plug in your own numbers.) If you really love the car other than this issue, is it really worth the angst? And if you want to sell it try selling it on Craigslist or EBay and name your price and don't settle for anything below what you paid less maybe $1000 for your use thus far.
I see your point. I would lose probably at least a couple of thousand by selling it even outright. I do love the car. I guess I am just having a hard time wrapping my mind around the situation. It's a machine with parts, parts break, fix them. Nothing is wrong with the car, nothing is out of place but we know it is not performing like it should. Even Honda says it isn't but no one can figure out why. I had an 2011 Taurus that I would have still been driving if I hadn't been rear ended at a stop light. I truly enjoyed and took good care of that car, inside and out. But I had saved for a long time for the day I would need a new one. I did my research, test drove a lot of cars and picked one based on the big picture. I know everyone has their opinions on it and might think I am wrong for nitpicking. It might only be $600 a year but if I keep it 12 years that is an extra $7,200 in the big picture I am spending extra. I don't think that's right. To some it might not be a lot but to me $600 can be an issue from year to year.
So far I've had the dealership I purchased it from, their local Honda dealership, my local Honda dealership that Honda customer service referred me to and my own personal mechanic who has been taken care of our cars for over 15 years and I trust explicitly. No one has been able to find anything concrete wrong with the car. No codes, no engine lights, no fuel leak and the Honda dealership I went to today wasn't able to find anything physically wrong underneath. I am stumped. My wife is going to drive it to work next week as it's almost an hour for her to go one way and she is going to see if while she drives it anything changes as far as MPG that could be due to my driving habits. My mechanic says there are two possibilities but neither is guaranteed and it would be a roll of the dice. After going through everything they could they are thinking either air fuel sensor or mass air flow sensor. That's it. They kept the car and couldn't find anything concrete. I'll let my wife drive it Monday and see what happens. Have an open case with Honda customer service and my case manager who spoke to the dealership I had the car at today is going to call me back. He has been wonderful to work with but I'm sure if nobody is finding anything his hands are tied.
Check for leak in Air intake. I had same problem and I found out that fuel to air ratio was messed up. They found air leak and had to replace turbo intercooler. My mpg went back to normal after Intercooler was replaced. Air leak like this is suppose to give you warning but if its a small leak than error might not show up. I got exhaust system failure error once but upon reset I never got that error again even when I had problem. Intercooler sits behind AC condenser and they had to remove front bumper to replace it.
161 - 171 of 171 Posts
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