Fitted the Lambdalink a week after upgrading from the Dawes AFR
Readings were as expected for the given situation, i.e Knightrider effect while cruising and solid light when load applied to the engine

I changed the backbox, to a lovely titanium item, and now the readings on the Lambda link have went Pete Tong

Closed loop is still showing up fine but when any load is applied the readings just disappear. The reading will reappear when the cruise mode returns

I fitted a new universal lambda at the same time as the Lambdalink

The old backbox had a 2.5 inch exit and the new one is 3 inch all the way. would this affect the Lambda signal

Car is a 95 WRX with the sensor in the headers, is the sensor getting too hot and shutting down?, if so why has changing the backbox affected the lambda readings?

With the previous backbox the lambda readings were spot on with its readings in both closed and open loop fuelling.

The new backbox was welded on to match the downpipe to the centre pipe.
Can welding an exhaust in situ damage a Lambda sensor?

Any thoughts are appreciatted before i go out and buy another Lambda sensor

Grant

 

Also reset the ECU but to no avail

Checked for any sign of damage at the wires from the sensor but all look nice and fresh

Grant

 

What is best as a replacement

Zirconia or Titania

Grant

 

Call either BR Deveopments or API and get the genuine bosch one. You know it makes sense

Stuart

 

God bless you Coulty

Fitted the old lambda and the thing is fully operational again

So i will order a new Bosch universal one from either BRD or API

Grant

 

That's odd - I've had almost the same problem.

Fitted new lambda and AFR gauge at same time. It was reading out fine for a 2-3 weeks then I get pretty much the same thing - a bit of led action when I start the car, but as soon as I drive it all the lights go out!

I hadn't changed anything else or done anything like welding on the car - I just noticed one day that it wasn't lit up as it should have been. Does this mean the lambda sensor I got a few weeks back has buggered up already somehow?!

 

Think so chief.

Bosch universal seems to be the longest lasting one.

Grant

 

Bugger.

Suppose I can probably find out by sticking the old one back in and seeing what it does.....