My MY 2002 WRX failed its MOT....emissions.....

It would appear that the Lambda(ish) sensor has packed up....engine warning light came on a few weeks ago.....does this mean my cat will be scrap too?

Been quoted about £350 for a 2nd hand cat and new sensor plus fitting.

Any thoughts/experiences?

Russ.

 

Russ

Doubt it's scrap just do sensor first

but Sensor are quite dear £130 ish(not sure) so S/hamd Cat £160 + £60 fitting
a advert in wanted or try Ebay must be loads of cheaper ones about

Tony

 

If the cat has died it`s time to use the i`m doing my bit for the enviroment line, by making my car more fuel economical. By replacing the downpipe with a high flow sports cat. And replace the rest with bits of pipe. Gentle remap later, and more smiles and better cruising fuel economy, every ones a winner.

Jase

 

Universal 4-wire Zirconia Heated Oxygen Sensor :: Gendan Automotive Products

 

Well done Pete that's a bargain compared with Subaru prices

Tony

 

I am led to believe that it's suitable ...... but better check first!

 

Once again...you lot just keep the help coming.

Thanks,

Russ.

 

Why not just buy one of the original exhausts sitting in a garage somewhere when the guys upgrade their original exhaust for something else? I was told that I'd be lucky to get £50 for mine if I sold it

TX.

 

Get fault code read (thats why the check engine light is on) - that will confirm which sesnor is at fault (presumably OS)

Replace OS sesnor (if the fault code confirms that)

Reset ECU

Go for a good drive, ensure light remains off.

Then check emissions

If ok, get MOT done, and away you go.


If not ok, ooerr, thats where I leave you in the lurch, too many variables, possibilities and outcomes to list in addition to the cat. Usually a cat is only on concern if it has melted or shattered and blocked up the exhaust...you'll know if it has

 

ISTR the newage jobbies have 2 lambdas. One up front to feedback into the ECU for mixture control and another one after the last cat to check the status of the cats and/or emissions.

i) I think you car's got more than one cat. It may have 2 or even 3 depending on model.

ii) I'd get the front lamdba/O2 sensor replaced, then get the emissions checked.

J.

 

It vreads P0031 fault code...

Quoted £45 for the item and £35 to fit..its a bugger to get to....

Hoping to get it done Tuesday/Wednesday.

Thanks for all the help.

Russ.