A.Collins

Thanks for the suggestion Stu. I bought the car off someone I know and he definitely didn't have an uprev done on it. I do know that the o2 sensors sit in the HFC's directly and although they do have a slight extender to them then I don't think they're long enough. When you say plenum spacer do you mean on the inlet manifold?

Thanks guys. gsexr, I am a very small business, trading for the past 18 months and I strongly believe in good customer service, including after sales support as reputation is everything. I completely agree that a lot of customers would be fobbed off by traders, especially as I did over 200 miles in the car without any issue before advertising it for sale. I do this with most of my stock to ensure that I can identify any potential problems they may have in order for me to resolve them before sale. Unfortunately, no matter what measures I go to before the sale, there are the odd few cars that do have a problem once in the hands of the customer but I do my absolute best to resolve any issues with as little inconvenience to them as possible.

Thanks for your reply guys, much appreciated. I'll give the CEL fix extenders a try and see how it goes. They worked perfectly for my S2000 so fingers crossed! I'll let you know how I get on. Alex

Hi, I'd like to introduce myself on here as I am a big fan of the 350Z. Although I don't own one I specialise in performance car sales and have recently sold one to a customer of mine but I am having a problem with the car throwing a CEL all the time. The fault code is P1147 - heated oxygen sensor 2 (bank 1) max voltage not reached. I have replaced the sensor, which did look VERY sooty but within 24 hours and about 100 miles of driving it has come back on. The car is a 2004 54 with 68k on the clock, FSH and has an Invidia Gemini catback and BERK high flow cats. Has anyone else experienced this problem and has a CEL Fix extender off ebay solved the problem or do I need to look at other things? I would like to get the issue resolved as soon as possible for my customer so any help would be greatly appreciated. Thanks, Alex