Riders' Questions and Answers-15-year-old Seven-generation Accord 15L+ What aspects should be checked for fuel consumption performance?

Che Xun. Com report? A seventh-generation Accord rider in Yantai consulted: Cold cars will slow down at high idle speed, 1500-800 for more than five minutes, stop and go for more than two kilometers after starting, fuel consumption 15+, long distance 10+. The oil of Mobil 0-30 was changed, and the front anode (which should be the front oxygen sensor) was also changed one after another.

After consultation, the seventh-generation Accord that the Yantai cyclist took over was produced in 2005, with an age of 15, a mileage of over160,000 km, a displacement of 2.4L and an automatic transmission. The vehicle should be similar to the above picture. According to the owner's description, the car still has problems such as VTEC valve oil leakage.

According to the network query, the emission standard of the 2005 Accord 2.4L version is Euro III, the fuel supply mode is multipoint injection, the gearbox is 5AT, the front suspension is double wishbone independent suspension, and the rear suspension is multi-link independent suspension with mechanical and hydraulic assistance, and the wheel specification is 205/65R 15. After knowing the basic information of the vehicle, let's take a look at what this Yantai rider described.

1, daily driving 15+, if Beijing is congested with road conditions, considering factors such as car age and mileage, the fuel consumption performance is actually not too much;

2. The high idle speed of the cold car decreases slowly, and it takes more than 5 minutes to decrease from 1500 rpm to 800 rpm. If you stop after starting, you need to drive more than 2 kilometers;

3. The long distance is 10+. It is understood that the cyclist's commuting mileage is about 70 kilometers, the speed limit is 90- 100km/h, the one-way trip is about 30 minutes, the urban road conditions are 5 kilometers, and the rest are expressways;

The oil viscosity of 4.0W-30 is suitable. In addition, the vehicle has replaced the front oxygen sensor, thermostat, water temperature sensor, coolant, spark plug, air valve and carbon canister solenoid valve, all of which failed.

5. The owner is in Yantai, Shandong. Please contact us if there are any local experts to repair Honda.

Check the maintenance history of the vehicle, and the cooling system has been taken into account during maintenance, such as replacing coolant, thermostat, water temperature sensor, etc. After consultation, the warm air is hot enough when the vehicle is driving at a high speed and at a constant speed, indicating that the performance of the large and small circulation pipes of the engine should be normal.

If the engine cooling system is always in a state of large cycle, the water temperature will drop when most vehicles are driving at high speed and uniform speed, resulting in poor heating effect. In addition, some electronic control systems are considered, such as air valve (tentative intake induction), front oxygen sensor, carbon canister solenoid valve, spark plug and so on.

Based on the history of automobile maintenance, the author gives the following suggestions:

1, vehicle foundation inspection, first of all, to confirm whether the wheel braking system is locked, which is based on the vehicle age 15 years,160,000 kilometers. If one wheel is not braked well, the driving resistance will increase after braking;

2. Check the automatic gearbox to confirm whether there is slippage. According to the description of the owner, the shift speed range of the car is around 2000 rpm, which is a bit high. In addition, it is suggested to test the vehicle to confirm whether there is a performance fault in the power transmission.

3. Thoroughly disassemble and clean the throttle valve, and clean it inside and outside. According to the owner, he also planned to clean up the system, and found the following picture after a casual search. Perhaps this problem is more common and should be considered together during maintenance;

4. Thoroughly clean the fuel injector, disassemble and inspect the intake manifold, clean it when necessary, and replace relevant seals to ensure the air tightness of the intake system;

5. It is suggested to find a practical repair shop in the local area, make a comprehensive inspection and make a reasonable maintenance plan. There is no need to invest too much in vehicles of this age and mileage;

6. Pay attention to the double wishbone front suspension of the vehicle. This is because some models before the 8th generation adopted double wishbone front suspension, and there were many cases in which the lower ball head of the front knuckle came out.

As shown above, Wan Chunlei, a great technical god, pointed out in his blog post that the ball head of the control arm will face the fatal danger of being suddenly pulled out of the ball bowl of the front wheel steering knuckle under full load for life.

The author also witnessed an example of an 8-generation model being off-axis. Fortunately, at that time, it was in a congested urban road, and the speed was not high, which did not cause serious accidents. The above picture is taken by the author.

Some examples are listed above for reference only.

Tips: riders who have purchased this type of vehicle must always check the lower ball head of the steering knuckle of the front suspension of the vehicle, and deal with it in time to avoid danger during driving;

Drivers who intend to buy these generations of used cars can't change their intention models and look at other brands.

Finally, I would like to welcome Honda in Zhaoyuan, Yantai. Please contact us if you can solve the problem of this car at a lower cost and eliminate the troubles encountered by this Yantai rider.

Note: The pictures in this article are from the Internet. If your rights are violated, please contact and delete. As a family, we welcome all the great gods in the industry to make corrections, so as to facilitate more riders of the same model to refer to them in the future.

Editor in Charge: Niu Lao

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.