There are 5 wires. Can someone possibly advice which terminals I use with my multi meter to test this sucker? I think this is toasted anyway because I put too much heat onto it while I was playing in the garage. Plus has anyone got the part number by chance? Thanks
Try.. http://www.bosch-motorsport.de/media/catalog_resources/Lambda_Sensor_LSU_42_Datasheet_51_en_2779111435pdf.pdf Also better pinout details.. http://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0CCwQFjAC&url=http%3A%2F%2Fwww.motec.com%2Ffiledownload.php%2F%3Fdocid%3D3524&ei=9RXeU5edAsqf7Ab-6oGgCg&usg=AFQjCNEx56ia1jTHFhAILo2Y607s7riG8Q&bvm=bv.72185853,bs.1,d.ZWU&cad=rja
You did not say whether the O2 sensor is before or after the cat. Before is a wide band sensor, after the cat is a narrow band. Best way to test is with a scan tool and force the system rich/lean either thru propane/vacuum leak or WOT snap test and see if the sensor reacts properly. As for damage thru being heated, they live in a hot environment, as long as the wiring is good with no O2 sensor DTC I would hesitate to replace. One last thought, these sensors are approaching 15 years of life, you could argue that it is one of the most important sensors and they should be replaced based on lifespan. A lazy or bad O2 can damage a cat..... last time a looked a cat is a little more expensive.
Thanks. I'm replacing them because they are not that expensive and then at least I will know they're all good. Who knows, it might even sort the CEL.
