Q: Excessive fuel consumption

asked by on December 01, 2016

My 08 accord lx comsums alot of fuel the fuel trim is very high. I have changed the oxygen sensors, the pcm, the catalyst, complete exhauste,spark plugs. I get only 110miles with 35liters city driving. The car is in nigeria

My car has 242005 miles.
My car has an automatic transmission.

Hello. An excessively high fuel trim and decrease in fuel efficiency can be caused by many things. If you have already replaced the aforementioned components then I would move on to examining the vehicle’s engine management system. The fuel trim is adjusted by the computer, which receives its input from a series of sensors on the engine. A few sensors I would look at are the coolant temperature sensor, the manifold absolute pressure sensor, and the mass airflow sensor. All three of these sensors play an important role in fuel and timing calculations, and a bad signal from any of them may cause the computer to send the incorrect amount of fuel to the engine, resulting in your excessively high fuel trim and decrease in efficiency. As these sorts of issues can sometimes be difficult to diagnose, I would recommend having a professional technician look at the vehicle.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Steering wheel groans/sputters on turns

Hello, thank you for writing in. The previous tech who examined the vehicle may be correct, but it is impossible to verify that without the vehicle in front of us. The steering column can cause these symptoms, but so can...

Shaking

Hi There, Depending on what speed the shaking happens and whether or not it happens when pressing the brake pedal, this may be a result of suspension components failing or possibly brakes that need to be replaced. If the shaking...

Car overheating at light

I am going to assume you have a 2.2 liter engine with the air conditioning option on your vehicle, since you mentioned multiple fans. Both fans should turn on while the vehicle is running and the A/C is switched on....

Finding hidden kill switches

If the vehicle will not start, an unknown aftermarket "kill switch" that is active, would be found in the course of a no start diagnostic. On the other hand, if a remotely operated device exists, but it is not presently...

How do you defog or defrost the windows?

Your Accord includes both a front and rear defogger/defroster. Whether your windshield is fogging up on a rainy day, or your rear glass is covered by frost, using both systems is easy. Here’s what you need to do: Front Defogger/Defroster...

I have a 2011 Sonata, when I apply the brakes after driving at speeds, during the end of the stop I will hear multiple ''thud'' ty

The likely causes are a loose brake or suspension component, although even a loose motor mount could be a cause. With regard to any of those general possibilities, the noise simply occurs once the moving (loose) component reaches its end...

What does the ABS light on the dash mean?

The anti-lock brake (ABS) indicator light on your dash should come on during the system’s self-check when you start the engine, but should go out shortly afterward. If the light comes on again later or stays on, it’s a sign...

High idle 2001 Honda CR-V

Hi There, What you are describing may be a result of a vacuum leak. High idle speeds or in some cases rough idle, stalling and hissing sounds are common signs of a vacuum leak. When a vacuum leak is present...

Parking light & headlight positions don't work

There is a 15A fuse for the front parking light function in the fuse box under the dash. The turn signals are on a separate circuit so this is why they might still be operational when the parking lights are...

Related articles

The Best Used Cars to Buy If You Have Kids
Once Once you have kids, the kind of car you have becomes very important. Suddenly, the amount of space, entertainment features, reliability, safety, and easy to clean interior become the top priorities. Here’s a list of vehicles meant to satisfy...
How to Modify the Alpine Navigation in an Acura or Honda
Modifying Modifying the original equipment manufacturer (OEM) navigation system of your Acura or Honda vehicle with aftermarket software is an easy way to add additional customization features to the already-installed system. Using a simple third-party computer program and a...
The Best Used Cars to Buy For Fuel Economy
Saving money on gas is an important factor to consider when buying a car. The Honda Civic, Toyota Prius, and Ford Fusion all have great fuel economy.