G'day folks,
I know this question has been asked plenty of times before but I can't find anything exactly the same as mine, so I'm asking again, appreciate the patience!
GU 2009 3.0l
Symptoms:
- Black smoke, when accelerating. When going downhill and revs below 2000 nearly no smoke at all but going uphill and any revs over 2000 and it kicks out quite a late of black smoke, even when holding revs at a set rate for an extended period.
- Limping. Accelerates fine until you hit 2400 then suddenly drops back to 2000, then climbs normally to 2400 then drops to 2000. But if you really push your foot down so it drops down a gear it'll let you accelerate as normal.
- Takes a while to start each time, maybe 5 seconds (quicker if it's hot).
Things I've tried:
- Put a new MAF sensor in. No change.
- Changed air filter. No change.
- Tightened intercooler hose clamps. No change.
- Injector cleaner diesel additive. Only done half a tank with the stuff in, as of yet no change.
- Have disconnected the battery just then, will leave it unconnected tonight.
Is it possible a dodgy tunit chip would be the problem? Can I simply unplug it and run the car to see if it changes anything or is there more to disconnecting one than that?
Just wondering if anyone has any other thoughts, or things I should try if it's still doing it tomorrow.
Trying to sell it so would like to get this sorted!
Appreciate the help.