Tid $04 Cid $60 fail, P0300, GM MR-140?

Hi Ken, Thanks for your reply. Yes, this one has only the MAP, and I changed it to the old genuine GM part which is apparently okay plus I installed a brand new O2 sensor / upper to it, but it still spits out P0300, the blinking MIL & the old TID-CID error. It should have pretty tight and intact head gasket - no bubbles in the coolant, and it does not mix coolant to oil so at least partly it's mechanically okay and runs as these 4 cyl little engines usually do, revs to my ears normally. So I'm a bit lost with this. It should be simple, of the simplest GM-Opel replicas. Nearly all the sensor parts are new now, half a dozen lambdas recycled through it, a new cat., One additional ECU tested with the same outcome. But anyhow it runs too rich, the upper O2 sensor is black - sooted after being run for few minutes, the engine bay smells petrol (no leaking pipes!), Like an old fashioned hand choke forgotten on. It runs, or tries to run, for a while in the closed loop - mode, but soon after it's in the open loop, and has utterly rich mixture, and the only OBD error is this P0300. This is embarrasing, been changing parts worth the value of the POS, which hereabout is something like 1300.1500 EUR max. And it's not the question of the money spent but some immaterial values. OK, I have this TOAD program but either I cannot use it, or then it's just no good for this.
Quickly thinking the engine gets an addtional O2 doze, but where it should come from to make this mess; after the MAP and before 1st O2, or even earlier somewhere. Afaik there're only two sensors in the intake side, 1st the IAT before the throttle body, and then soon after the MAP in the intake manifold and that's it. And further, it's not adjusting anything using O2 -sensors, but starts sooting the catalyst & O2-sensors soon after it's been started. It's closed loop mode lasts maybe 1.2 minutes and then we're again in the open loop mode. Afaik only the 1st O2-sensor is used for mixture adjustments, and I've checked the cables for the 1st one, they're ok up to the pins of the ECU connector.
Yes, such a case still to be studied, or to be taken to a "Scrap My Car"-yard :)

Hi Ken, okay, this sounds reasonable that the Evap-solenoid has given up and checking of the stuck injector. This is a T18SED and seemingly it does not have a fuel pressure regulator (so how does it keep it steady. Guessing this is all done in the pump unit, in the fuel tank). Now, the car is in Finland and I'm in Sweden for a month to finish a building project here, so let's return to the case after some weeks. After all, this is interesting as I've been playing with eg. A Volvo diesel engine and got it working, maybe a bit more complex than this Korean wonder. But let's see if this one beats up a +55yrs old diy mechanic.
I may have misunderstood but after reading the Nubira's service manual there was something like that after its ECM has detected the misfire condition / P0300 / it stops all internal emission testing. This makes sense as my TOAD-progr. Fails all tests related to the catalyst and O2-sensors, or rather they're all summarized simply as "incomplete". But the key might be in your answer, and I thank you for it. Let's wait for a few weeks to see how this case progresses, not willing to give up yet as this is getting pretty academic. :)

Hi Ken,

Shortly, the case is closed, and this is somewhat embarrassing. As I did not invent anything new with this, I just ordered a second hand, yes one more, ignition coil from a scrapyard for app. 30 EUR. This came sparkplug cables attached, and I was wondering if they seemed to be in totally wrong order. Anyhow, I let them to be as they were, installed the unit, and started the engine, and bam no more flashing warning lights nor P0300 fail codes. Yes, stupid me. I spent quite a lot on lambda new sensors, refurbished cylinder heads (.2 pcs), etc., And the reason for all the hassle were crossed plug cables, s.T. Maybe the lesson is that check the simplest - cheapest things first, at least twice, before ordering and replacing this n' that.
This hurts, as I thought that I was a competent diy mechanic :)