Right Lambda stopped working so hasn`t been driven since so today I thought sod it, and I took the Lambda out to fit a spare Bosch Lambda I had to see if it made any difference.
What I pulled out was shocking.



So gonna have to look inside the turbo now see if its done any damage, as the lambda is in a STUPID position before the turbo. So all those bits I`m gonna assume have been blown straight through the turbo, so gonna have to have a look.

GREAT!! lol.

 

that does not look good

 

ouch!!!

 

...

 

Deffo think I need a new one. lol.

 

What collateral damage do you guys think its done??

 

I reckon your turbine blades will be pretty manky, at the very least.

 

Well I`ll NEVER put another Lambda in that position again.
Its going in the downpipe from now on.

Will have to see whats what when I take the turbo and downpipe off.

 

Yeah, it's totally moronic to have a lambda PRE-turbo! What were Subaru thinking?!

If it's for accuracy, then sack that! Rather have a slightly under-performing lambda sensor/ECU feedback system, than the ever potential threat of a knackered turbo...

 

Yeah. Well they placed the later lambdas in the downpipes on later cars, where it is now would be fine on a n/a car and that close it doesn`t have to be heated either, as most single wire lambdas aren`t as close to the head as the Subaru ones. Most heated Lambdas are a around 12inch + down stream as the exhaust gas flow is less disturbed.

 

Totally.

I'm just glad I've moved from a 93 to a 99 car!

 

Do they not have the sensor in the manifold as well as the downpipe??

 

its a BIG ISSUE lol

 

Not to do things by half lol.

 

Don't think so. That's why I'm happy I now have a post-MY96 car.

I think the O2 and EGT are both in the d/p on MY97>00 cars...???

 

Well Lambda is going into the downpipe, and the fire sensor is getting a resistor and removed lol.

 

Yeah good move.


So also got, or going, decat d/p too?

 

LOL

 

Yep.








Although don`t need the centre section as I already have one on there.

 

The lambda sensor is in the headers/up-pipe on all newage cars.

Some have an EGT sensor there too.

Most likely damage is some minor blade damage to the exhaust wheel in the turbo. As it sounds like the turbo is still working it has not jammed it in one position (which is good) but it may have taken a tip off a blade or too. However if it had done that the turbo would be out of balance and would quickly sh*t itself. So, in summary - I think you have been very lucky !

 

Yeah.

But are both sensors in the downpipe of the facelift MY97-00 Classics?

 

I have a bug and the exhaust gas temp sensor in the up pipe desintegrated and went through the turbo, lucky no damage and now no egt

 

Have you inspected your turbo exhaust wheel for damage?
The Lambda sensor is located before the turbo on all Subaru WRX/STi MY93-96 and MY01 onwards.
For the Lambda sensor to suffer the damage shown in your photograph I would suspect you have been running very weak.
The location of the Lambda sensor prior to the turbo has not been a big issue and the problem on your car is most likely due to a pre existing problem.
The Lambda is located there because obviously is warms up quicker and may be in the main due to emission control reasons. Moving it to the downpipe is a good move.

 

mine did same when i got it but damaged most of blades on exhaust wheel it just made a funny noise one day when having a play followed by engine lamp coming on, stopped car and got towed home replaced turbo and moved my lambda to down pipe so it cant do it again

 

Lol well will have to see whats happened.

I haven`t yet, will be in the next few days.
Same thing happened to a mate of mine with his old WRX. The lambda that failed was a Lucas universal jobbie, so probably not up to the temp. Will have to get the pipes off, and have a damn good look inside and then fit a new Lambda then see what she goes like. Tbh think its been like this since I had it, as in the advert it states
"currently running on a tdo5 turbo after the aps sr55 turbo started to smoke so isnt running its full potential at the mo"
so think that the lambda had failed already and that I should have checked before fitting the engine tbh. Because I have never driven the car before due to buying it with a dead engine, so what I think has happened since I have run it is that the lambda has finally given up the ghost, and with me not having driven It I`d have not felt anything wrong. Any ways will be phoning around tomorrow to get a new lambda, when that arrives exhaust off, and see whats what in the turbo.

Happy days.

 

Right Main dealers have Lambda on order £132.02 + VAT, will be there Thursday.
Will have to double check when I go up its the right one, then crack on Friday with swapping the downpipes, and checking the turbo.

They also said that Subaru putting parts up in price from Sept by 12% iirc, dunno how true this is.

 

Just popped up Keith Price and got the Lambda sensor.
Although its in a Subaru box its a BOSCH A24-641 209 05270.

 

Hi Guys, Will be finally replacing my turbo this weekend - have not looked at my lambda sensor as yet but if I find it to be fooked........I already have one from a 96 model spare that I could put on - will this be ok?? will it go into the existing position on the maifold or should I relocated to the decat downpipe?
Anything else I should know before embarking???
Sorry of the offspin..

I believe the hotside fins to be slightly worn on the turbo so after seeing this I think Id beta check the lambda too.