jt_armstrong

jt_armstrong

Well-Known Member
Ahh feck she failed the MOT :doh:. Here is the list:-

1) Nearside & Offside rear lower shock absorber has an excessively worn rubber bush.
2) CO2 excessive (Actual value was 1.315% should be less than 0.200%
3) HC excessive (Actual value was 421ppm should be less than 200ppm)
4) Lambda reading high (Actual value was 1.128 should be between 0.970 & 1.030)
5) Rear indicators incorrect colour
6) Rear brake pipes corroded.

I also got an advisory about exhaust emitting blue smoke during acceleration.

Brake pipes were half expected. Indicators are straightfoward. I am guessing the shock absorber bushes are simple enough.

Anybody got any ideas about the emmissions? Last time I checked my fuel consumption was at the new year on a run to Scotland and I was getting roughly 22mpg - Am I looking at new cat?

Thanks in advance.
 
I guess that should be a high CO reading, rather than C02? a very high C02 reading is desirable :)
blue smoke sounds like oil, which I guess would also contribute to high HC and CO.
I'd guess its engine wear - valve guides or rings?
 
For the emissions, check your lambda sensor and get a new one if needed. But if it is fine you may need a new cat.
 
jt_armstrong said:
Ahh feck she failed the MOT :doh:. Here is the list:-

1) Nearside & Offside rear lower shock absorber has an excessively worn rubber bush.
2) CO2 excessive (Actual value was 1.315% should be less than 0.200%
3) HC excessive (Actual value was 421ppm should be less than 200ppm)
4) Lambda reading high (Actual value was 1.128 should be between 0.970 & 1.030)
5) Rear indicators incorrect colour
6) Rear brake pipes corroded.

I also got an advisory about exhaust emitting blue smoke during acceleration.

Brake pipes were half expected. Indicators are straightfoward. I am guessing the shock absorber bushes are simple enough.

Anybody got any ideas about the emmissions? Last time I checked my fuel consumption was at the new year on a run to Scotland and I was getting roughly 22mpg - Am I looking at new cat?

Thanks in advance.
Click to expand...

put in fresh oil and add an additive which will stop the burning of the oil(but not for long),make sure air filter is clean,lambda sensor isn't way off,but i would try the oil and air filter,worked for me:D
 
roddy4 said:
put in fresh oil and add an additive which will stop the burning of the oil(but not for long),make sure air filter is clean,lambda sensor isn't way off,but i would try the oil and air filter,worked for me:D
Click to expand...

Thanks Roddy,
Thats what the guys in the MOT centre suggested. My plan is to do that this afternoon before taking it down to the diagnostics guy.
 
Cats won't affect the CO or HC readings, so I wouldn't worry about them, I ran my 3.9 classic with one dead lamdba sensor and it still passed the MOT, if you had both of them dead I think you would notice rough running. Air filter sounds like a good place to start, especially with your unburnt HC reading being so high.
 
You must log in or register to reply here.

Similar threads

Nodge68
Freelander 2 (LR2) LR trouble codes.
Replies
6
Views
38K
Keith Kernow Kernewick
Keith Kernow Kernewick