jamiehamy 0 Posted April 29, 2011 Car failed MOT on high emissions and play in rear bearing ( cheers ECP, at least you manged 15k miles!). Managed to get a cable for the day and shows error 00525 Oxygen Sensor No Signal. This would explain high emissions so will get a new one as soon as possible, however I've noticed few symptoms of this. With the exception of temperamental performance (slow one day, fast the next) and very occasional stall ( I live with it, it's always after a downhill drift stopping at a roundabout). In fact the stalls only happened after I reset the ECU at weekend, so I'd put them down to that. I've driven the last 15k miles without issue, and with acceptable fuel economy. My question is, is it normal for the VR6 to run with few symptoms with no lambda? Sounds like the ECU makes up the difference using MAF and TPS? Would be interested to hear peoples thoughts.. :) Quote Share this post Link to post Share on other sites
davidwort 0 Posted April 29, 2011 with no lambda feedback I'd have thought it would be runnning a limp home map, that might explain the varied performance, not good though, the old CAT will be suffering. Quote Share this post Link to post Share on other sites
boost monkey 0 Posted April 29, 2011 yeah if you run rich for long enough you will destroy the catalytic converter. And they ain't cheap. Quote Share this post Link to post Share on other sites
jamiehamy 0 Posted April 30, 2011 Would have fitted yest, but no-one has them in stock and will be Thursday before I can get one :( Doh :( Quote Share this post Link to post Share on other sites
