Lambda sensor 3.0D

[Rodney]

Mechanics have advised me that the lambda sensor that should be on the exhaust just below the exhaust manifold has been removed when a new downpipe was fitted by the previous owner. Apparently this would measure CO2 and the computer should normally use this signal to control air/fuel mixture.

MY QUESTION IS - how critical is this sensor - need I worry about replacing it????

[Grootseun]

Never came on the local 3.0 in fact the diesels here only started using Lambda very late in the 2008s to my knowledge
The 3.0 came form factory wiht that bung in the manifold , a lot of the Aus guys tap insert there EGT probes there

[Rodney]

Thanks for that. The confusion has come in because there has clearly been a section of down-pipe cut out and replaced, and the mechanics noted a lead and plug fastened with a cable tie to the firewall. They took this to be a connector for the lamda sensor. I will tell them ti ignore.

Thanks

[Grootseun]

Rodney your vehicle runs what is basacally a VP44 pump system , i spke to one of my Diesel Pump specialists today and chcked wiring configurations also and on a 2001 with VP44 def no O2 sensor and can promise you if it was removed you would have had a engine management light lit up complianing about the sensor , i knwoas we custom manufacture similators to bluff the ECU into seeing the sensor as working and in place

[Rodney]

Thanks for the valuable info. The technical expertise within this site and the willingness of members to assist is really GREAT!