Bit of background - I will keep it as concise as possible.
Car was running like poo, stuttering and hesitatating at half throttle, not really boosting and when i did was 'surgy' (off/on/off/on/off).
Had a few bits of advice from the guys on here, one of which was change the plugs for iridium.. which i did.
Not really hesitating as much now but still not pulling through the rev range like it was before.. better, but still pretty poor!!.. so... I borrowed an ODB2 cable and got myself some diagnotics software to try and see what was going on.
I am currently looking at the short term fuel trim (will also look at long term after). Bank1 is hovering around 0, sometimes a few % above, sometimes a few % below... as expected (even under 100% load)
HOWEVER.. Bank 3 is showing a pretty consistant value of -40% ie.. rich as hell!!
My questions are..
1. Is this -40% normal (i'm expecting not)
2. If not, any ideas what to look at... and ....
3. What the hell is the difference between bank 1 and bank 3.. I have no idea.
This issue is doing my head in so appreciate any advice you can offer.
I have a full dataset off the key sensors from a run i did today if anyone knows anything about this sort of thing and fancies taking a look at it...
Thanks in advance