You need to keep both sensors plugged in but back the rear one out of the stream a little.I plugged both of the sensors back in and the second one is throwing a check engine light, but what do you guys recomend for a wideband 02
Thank you im from South africa and u just solved my o2 sensor issue not heating up i have to relocate it closer to the flangeCurious, I went to the Milltek site to get some info. and they say they don't have a header for the Fiesta.
I am not meaning to argue with you. sites are sometimes not up to date.
Any way, where on the header is the O2 sensor located ? If it is in the collector, it may be too far away to get heat enough to work properly. I have seen this happen on Escorts.
You might contact Milltek with your problem.