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Post  Crazyyen 30/7/2011, 2:10 am

Sorry havent been around much been very busy

Long story short my rover 200 failed her mot awhile back been trying to get it sorted it had 4 retest still failed today the 29th spend most of the morning getting my car sorted at mg rover specialists spend abit of money hoping it would pass it mot nope FAILED again :@

So i drove to this other place with the mg guys done some more test

It not the lambda and the cat fine it dont need replacing we got my reading down to 1.20 from 1.30

So what else can or would it be?

Also im not paying £30 pounds to have my car plug into a pc so anyone in Northampton can give me a free diagnostics

Please i need my car ive already spent about £200 :@

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Post  Captain Slow 30/7/2011, 3:24 am

Crazyyen wrote:Also im not paying £30 pounds to have my car plug into a pc so anyone in Northampton can give me a free diagnostics

I don't think you'll get very far with an automobile repair professional not wanting to pay... Laughing

I've got an multiscanner which I'm happy to use to have a look at it but it depends on your car being OBD2 compliant.

Has the car had the cat & lambda sensor replaced?
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Post  Crazyyen 30/7/2011, 7:00 am

We have 3 lambda my old one i brought a used one and then this brand new costing me £70 pounds all come back with the same reading 1.30


CAT fine it not the problem sadly


OBD2 how do i find that out mate

I need help asap please ... IMG_20110729_205322
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Post  Captain Slow 30/7/2011, 7:41 am

What year is it?

Can you post up a wider picture of the printout so we can see all the readings?
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Post  Matt Parker 30/7/2011, 8:19 am

when you get a high lambda reading it is either due to a leak in the exhaust system so excess air is being drawn into the mixture, or a faulty lambda sensor and faulty Cat.

You say that trying different lambda sensors has made hardly any difference, what make and where did you get the new sensor from, is it an ebay job listed for the vehicle vet you have had to wire a connector plug onto it?

You really need to get the vehicle plugged into suitable diagnostics equipment where you will be able to see if the lambda sensor is working correctly and also the other sensors such as the coolant temp and air temp as these will also affect the over mixture of the emissions is they are faulty but without plugging it is to diagnose you will not know what is at fault without spending more and more as a trial an error.
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Post  Crazyyen 30/7/2011, 8:41 am

Rover 200 R reg 1998 1.1i

This any better

I need help asap please ... IMG_20110725_212159

when you get a high lambda reading it is either due to a leak in the exhaust system so excess air is being drawn into the mixture, or a faulty lambda sensor and faulty Cat.

Frist was bosch lambda sensors went i got the car reading still 1.30 brought a used one fitted that reading still at 1.30 then i went to mg rover specialists Northamptonshire they fitted a brand new one costing me £70 pound

So it best to spend £30 pounds having it plug into the pc ect

cheers
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Post  Popeye89 1/8/2011, 5:44 am

theyre using too low an engine speed to test.......tell em to crank it up a notch
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Post  Matt Parker 2/8/2011, 8:19 am

Good spot there, no idea how they managed to do that test as the gas analyser should only work once the vehicle is within its required rpm of 2,500 and 3,000 rpm.

As they printed is off with a speed of 2,111 rpm then that is an incorrect test and as they are so low with the rpm then they are not getting the exhaust hot enough for the cat to work correctly, it will need a constant high revving (Italian tune up) to get the system hot so the cat works and burns off the excess carbon that has been collected within the system.
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