Q: 1995 Honda Accord - Failed emissions due to having 1500 of 900 NOx ppm. Is there an easy fix here? They are saying it will cost me

asked by on August 08, 2017

My Honda Accord failed emissions - Everything passed except having 1500 / 900 (allowed) NOx ppm. Is there an easier fix than paying ~$150 for them to have it pass?

Thank you in advance.

My car has 109000 miles.
My car has an automatic transmission.

If you are producing too much NOX this means your combustion is running too hot. This is usually caused by the engine running too lean or the EGR system is not flowing enough to cool the combustion. You should remove the EGR valve and check to see if the port holes are clogged and clean out the ports of carbon and spray into the ports with combustion cleaner to help clean out the ports and valve. If they are not clogged and the valve is clean then you will need to find out why the engine is running too lean like the injectors are needing cleaned.

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

I just got a new transmission put in my car and it drives and reverse but won't go up hill.

This may be a sign of a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer activates a transmission solenoid, which directs transmission...

Car won't start in hot weather

One possible cause of this issue could be the ignition control module or ignitor. Once they age, they are very susceptible to heat and temperature. Another possibility could be a main relay as well. Fault codes should be read...

Replaced Timing Belt/possible bent valve/misfiring in 3 out of 4 cylinders 2002 Honda Civic

Hello - if the timing belt was not replaced due to failure (and almost certain bent valve damage), it seems unlikely that simply replacing the belt/tensioner, idler, guides, etc. would cause the level of damage that is suggested. If compression...

How do you pair a phone with HandsFreeLink®?

Pairing your phone with the car is the first step in using Honda’s HandsFreeLink (HFL) system. There are a few simple steps needed. First, make sure that you’re not in motion. Second, make sure the phone is discoverable. ...

have a 92 accord that after driving it about 20 minutes it's starts hesitating. I have to floor it to get it to go until the check

Hi there. The most common cause of this is the distributor itself. The distributor starts to fail which causes the internal sensor to not read correctly and it will also cause the coil to overheat in some cases. The Check...

Window not rolling up

This is a common issue. There are three main components to a power window, the switch, the motor and the regulator. The switch send the signal to the motor. When the motor receives the signal it turns and activates the...

My car won't start but the lights come, and their is a humming noise when I turn the ignition. It's a 1996 Honda accord vs

Hi Diavon. Thanks for sending in your question. If you turn the key and it's making a buzzing or clicking sound, then there are usually two reasons why. First, the battery most likely does not have enough cranking AMPs to...

What is this part

Hi Tyler. It's very difficult to determine a part name without seeing it. Unfortunately, since we can't have images attached through this platform, it's also hard for us to review it. One thing you could do perhaps is to take...

when to replace the timing belt? cost?

Typically, most manufacturer's recommend that the timing belt gets replaced around 100,000 miles. I would recommend checking in your owner's manual to verify the exact mileage. This replacement involves removing the timing cover which can be quite labor intensive. Expect...

Related articles

A Buyer’s Guide to the 2012 Honda CR-Z
In In the tradition of the sporty CRX, the CR-Z boasts some of the similar look, without quite the same amount of pep. That’s because the CR-Z is Honda’s eco-friendly offering and a pretty unique one to boot – (as...
A Buyer’s Guide to the 2012 Honda Civic Hybrid
With With more and more consumers looking for better fuel efficiency, hybrid cars are taking off in ways that most of us never thought possible. Today, America’s top-selling compact car, the Honda Civic, is offered in a hybrid model with...
The Best Used Cars to Buy to Maximize Resale Value
A A car is not an investment. An investment, by definition, increases in value. A car is a necessary purchase, and it will never appreciate in value, with the possible exception of classics and antiques. So, as a used car...