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Thanks for the advice and support on this issue, I have had some success but still a way to go.

Update- I got my new o2 sensors (thanks Rock Auto and FedEx. It’s a long way to Australia) fitted...

Just to keep up I tried disconnecting the sensor and I got the 450mv.
I have ordered sensors but won?t see them till the end of next week. Hopefully this will help.

Hi I drove the car to work today to get some more data, it threw codes a couple of times on the way home "lean on bank1" (permanent) and a new one "B1S1 O2 sensor heater circuit"(permanent) this is...

Good to know if as I suspect the new injector seals don't help I will probably replace both sensors just in case
thanks

yes I force reset the fuel trims with the scanner. the fuel trims behave after that, my suspicion although a bit far fetched is the injectors o-rings leak a little and once warmed
up and I rest the...

Thanks for your reply yes you are correct on the codes, It was on original start up, there was a vacuum leak I was able to correct it quickly and the numbers normalised, completely on bank2. the...

I had heater faults on the bank 1 rear sensor but it went away when I swapped them, I assume it had a connection issue.
I will need to unplug them to try that, it might take a day or 2 to get...

Thanks for your reply It’s possible I need to replace them but I don’t think it’s going to be that easy, there was a ground issue which I fixed. The sensor starts working when I reset the LTFT, it...

Hi like so many of these posts I am another beginner. I have completed a rebuild on my L76 which has included DOD delete the new cam is a Lunati Duration @.050" 212/218 0.531 lift 113 LSA. my goal is...

Hi I am Martin from Melbourne Australia trying to learn a little about programming.
This is my first time trying to tune (without a screwdriver) I have 2009 Commodore (its like a G8 Pontiac) with a...