More Problems with my EF!

[AUII_Forte]

Hey guys,

I am having another problem with my bloody car! I desperately want to get my turbo strapped on, but general running issues keep pushing it back!

It is a really strange problem, it's got me stuffed. Basically it's pinging when I step on it, idling high, has a bad flat spot between 2000-2500rpm that comes and goes randomly and the other morning it wouldn't start so I left it for 10mins and it started and hasn't done it since. I think it's all related, but deffinately not certain. I'm leaning towards the coil pack or something.

It pings badly if I bury my foot quickly, I know they sometimes give a bit of a knock initially, but I'm talking a big rattle for a good 2 sec or so before it goes as normal.

With the idle, I've tried to adjust it, but nothing has worked, It idles perfectly in gear and doesn't fluctuate at all, but when in park or neutral it sits at about 1100rpm not matter what. I think it's doing it because the timing is too far advanced, but I'm only guessing here.

The flat spot is strange, it just comes and goes as it pleases, generally it just feels really underpowered and sometimes misses a tiny bit then all of the sudden picks up as normal.

I have just given it a really thorough service to see if it helped, but it hasn't. I've done the plugs, leads, air filter, fuel filter, oil/oil filter etc. I've also tried to extract the error codes, but I musn't be doing something right, I can get it into self test mode, but it doesn't seem to being giving out any codes at all.

Sorry about the long and confusing post, but I am getting to my wits end with the thing, no matter what I do seems to help. Any advice would be a hugely appreciated!!!

Daniel