Vw polo 97 failed emissions

kh8

vw polo failed emissions cause high idle co 0.58

MuppetCheck

Firstly I think toh should rinse it off.

Snowfoam.

Wash with the two bucket method.

Rinse again.

Detar.

Rinse again.

Clay.

Rinse.

Deironize.

Rinse.

Then you need some collinite 845, two light coats.

Bring it back for the retest with. 50 on the drivers seat.

Let us know how it goes.

kh8

Hi my 97 polo failed emissions on high idle the reading was co 0.58 above 0.30 is fail thanks in advance

kh8

my 97 polo failed nct on high idle Emissions Reading was co.0.58 above 0.30 is fail gave it a service could it be the the cat ...... smell of petrol if it helps nct lad thinks it cud be cat thanks

jimgoose

kh8 wrote: »

my 97 polo failed nct on high idle Emissions Reading was co.0.58 above 0.30 is fail gave it a service could it be the the cat ...... smell of petrol if it helps nct lad thinks it cud be cat thanks

What were the other readings - Lambda and HC, also low idle?

kh8

jimgoose wrote: »

What were the other readings - Lambda and HC, also low idle?

lambda was 1.03 not between 97 and 1.03 is fail low idle was 0.38 above 0.50 is fail

Darraghmh91.

MuppetCheck wrote: »

Firstly I think toh should rinse it off.

Snowfoam.

Wash with the two bucket method.

Rinse again.

Detar.

Rinse again.

Clay.

Rinse.

Deironize.

Rinse.

Then you need some collinite 845, two light coats.

Bring it back for the retest with. 50 on the drivers seat.

Let us know how it goes.

I dought cleanin his car will help on his emissions mate haha
And you never mentiond polishing the car first before putting on the wax
And if it was me I'd de tar and rinse and then de iron and rinse the car before a clay and wash again after clay

Anyway how's the cat in the car man could be the cat as my cat was on the gt starlet and my emission were reading 4.50 with 3.50 fail so I was way above the pass rate so i bought a different cat for 40 quid and put it on the car and I got a reading of 0.01 emissions so brought them right down man also give the car a good drive before the nct so as the cat heats up a nice but and will help lower emissions
Keep me posted how you get on

challengemaster

Darraghmh91. wrote: »

I dought cleanin his car will help on his emissions mate haha

He should learn to read the forum name then :P

jimgoose

kh8 wrote: »

lambda was 1.03 not between 97 and 1.03 is fail low idle was 0.38 above 0.50 is fail

Mmm. I suppose the HC figures are well within spec? How is the idle?

kh8

jimgoose wrote: »

Mmm. I suppose the HC figures are well within spec? How is the idle?

HC 146 above 200 is fail that passed low idle is 0.38 above 0.50 is fail that passed and high idle is 0.58 above 0.30 is fail that failed any idea whats wrong

jimgoose

kh8 wrote: »

HC 146 above 200 is fail that passed low idle is 0.38 above 0.50 is fail that passed and high idle is 0.58 above 0.30 is fail that failed any idea whats wrong

What mileage is on it? Is it using oil, if so how much?

kh8

jimgoose wrote: »

What mileage is on it? Is it using oil, if so how much?

not burning any oil 85000 miles on it

jimgoose

kh8 wrote: »

not burning any oil 85000 miles on it

Fresh yoke, then. I think it isn't fuelling properly for some reason. In other words, I think the computer (a.k.a. ECU) is being told lies which is in turn causing it to do the Wrong Thing(TM). That Lambda reading would indicate a lean condition, which is a little weird. I'd be looking at the coolant temperature sensor, idle control stepper-motor, possibly the MAP sensor. Inspecting the throttle-body for gunk wouldn't go amiss either.

Is the idle speed normal, without any "hunting" or scooting up-and-down?

Special Circumstances

Darraghmh91. wrote: »

I dought cleanin his car will help on his emissions mate haha

I doughnut think you no ware you are.

Darraghmh91.

Special Circumstances wrote: »

I doughnut think you no ware you are.

???? I don't get it

kh8

Darraghmh91. wrote: »

I dought cleanin his car will help on his emissions mate haha
And you never mentiond polishing the car first before putting on the wax
And if it was me I'd de tar and rinse and then de iron and rinse the car before a clay and wash again after clay

Anyway how's the cat in the car man could be the cat as my cat was on the gt starlet and my emission were reading 4.50 with 3.50 fail so I was way above the pass rate so i bought a different cat for 40 quid and put it on the car and I got a reading of 0.01 emissions so brought them right down man also give the car a good drive before the nct so as the cat heats up a nice but and will help lower emissions
Keep me posted how you get on

ive been told by few people its the cat so il put new 1 on and c how it gets on il let u know how it go s thanks for your help

Darraghmh91.

kh8 wrote: »

ive been told by few people its the cat so il put new 1 on and c how it gets on il let u know how it go s thanks for your help

Yeah there cheap enough of you know of one that has passed the nct buy it and see how you get on .. Just buy new gaskets and nuts and bolts before doin the job as mine were a mess cause there's so much heat on the cat yano they do t be great so new cat nuts and bolts followed by new gaskets and you should be laughin man
A lot of people put diptane into the petrol tank when it's full and it helps clear it all out its ment to be great stuff but Iv never used it

Stoolbend

There could be a vacuum leak to cause the lambda to be slightly high. Or a small hole in the exhaust.

The co readings would indicate that the cat has failed.

kh8

Stoolbend wrote: »

There could be a vacuum leak to cause the lambda to be slightly high. Or a small hole in the exhaust.

The co readings would indicate that the cat has failed.

i put my hand on the exhaust and theres a bit of air coming out buts it not a hole its between the middle silencer and the exhaust the connection bit.........
would that affect it

Stoolbend

That could affect the lambda reading. Not the co.

kh8

Stoolbend wrote: »

That could affect the lambda reading. Not the co.

the lambda passed it was 1.03 put on new cat....... will they test the lambda again

biko

Thread from DIY and Detailing merged to main forum

Cerco

Have you tried any of the fuel additives?
If that fails I think you can have the timing adjusted slightly to reduce the emissions.

kh8

Cerco wrote: »

Have you tried any of the fuel additives?
If that fails I think you can have the timing adjusted slightly to reduce the emissions.

i used redex how to do the timing