Nissan Note failed NCT, High CO2 emissions.

Cushenst

Hi,
I just failed my NCT with a 07 Nissan Note petrol.
The readings we got were:
Engine Temp: 85ºC
Low Idle: CO .62vol%
HC 117ppm
High Idle: lambda .92
CO 2.48vol%
HC 457ppm

I have had to add oil on a regular basis recently but the car has been running smoothly both at high and low speeds. Does anyone know what might be causing the problem as I am already being encouraged by a mechanic to get an engine overhaul. approximately €2000. I should also add there is 295000KM on the clock.

Thanks
Stephen

rex-x

You have mega rich lambda, this is causing your issues. Fix the lambda reading and hope the cat is not damaged from running so rich and you will pass. The car cannot be running well looking a those readings

MadYaker

I mean the car is probably worth 2000 with a fesh NCT so is it worth spending the money on? Probably better off to cut your losses and sell it.

tayto lover

MadYaker wrote: »

I mean the car is probably worth 2000 with a fesh NCT so is it worth spending the money on? Probably better off to cut your losses and sell it.

Who is going to buy an 07 with no NCT?

Cushenst

rex-x wrote: »

You have mega rich lambda, this is causing your issues. Fix the lambda reading and hope the cat is not damaged from running so rich and you will pass. The car cannot be running well looking a those readings

Thanks for your quick reply. Is there anything we can easily do to fix the lambda reading.
Do you have to replace one of the sensors such as the lambda or o2 sensor?

rex-x

It depends on why the lambda reading is incorrect, unfortunately nobody on the internet can tell you. It will need a decent mechanic to properly diagnose the issue.

peasant

295.000 km and drinking oil?

Unless that car has sentimental value for you, I'd say that's it.
Nobody in their right mind will buy a car with mileage that high...new NCT or not.
You did well actually to get that much out of such a small engine.

Even if you got the engine fixed/replaced at that high mileage other things are waiting to go wrong (gearbox, suspension, etc)

Cars51

Your best bet here is to get a mechanic who has experience of looking after older high mileage cars. Myself I have gotten great value from older cars and a good part of the success is having a mechanic as described above. There are many mechanics like that, someone who is operating on their own, not a mainstream big garage, they have too many overheads and bills to pay. The small guy with maybe one other person is where to look. Best of luck with the Note which is a good car.

Max Moment

I wouldn’t right the car off just yet without getting a proper diagnosis from a good mechanic and see if it’s worth saving. If it’s the 1.6 Petrol engine (HR16de), I’ve the same engine in my 07 Qashqai and it’s still going strong at 350K km. Regular oil changes and correct spec oil is key to keeping this engine sweet.

I agree that the car would be hard to shift at that high mileage if you wanted to sell, but if you are happy with it, the car is otherwise sound and you can get the emissions sorted fairly cheaply, I’d be inclined to hold onto it yourself as it owes you nothing most likely at this stage.

You could spend a few thousand buying a new car and run into similar trouble down the road. Better the devil you know sometimes...

Food for thought anyway.

johnopc67

Hi, did you ever get to the cause/solution of this problem? My mothers car just had the same NCT fail.

User1998

https://www.boards.ie/discussion/comment/118778107#Comment_118778107

The solution will be different for each car. The above advise stands. Bring it to a good mechanic who will look after you.