Hi again guys!
Got some good news also some bad ones.
I have cheked and did a lot of those stuff you guys recommended above for me to do, so now I've got my TS back on the road, but with still not properly working engine, with check engine light on.
What I did:
Cleaned the mounting brackets of the ICM, cleaned the coil brackets, checked the ground wires (cleaned), then assmbled everything back, checked everything with the multimeter beeping from coils, and the bracket with a random engine metalic place (generator base, and some other metal bracket on the engine) to see if there is a good ground. After this the TS fired up from the first crank, but was working really poor. Then I checked the coil resistances, two had same resistances, and one had a real big resistance, so decided to change this one. Bought a new one (blue color, but doesn't matter if it works
) installed, engine seems better now, but not good still. It now runs drives, but no power, and you can hear the engine idling quite rough, and when you drive it, if you go carefull with the gas pedal, then it is possible to ride, but when you step on it - it back fires like hell. It even seem like the back firing is real hard, big noise of course and the engine kinda-like stopping for a second during the back fire.
Both fuels run the engine the same, but when engine is at it's working temp it is almost impossible to drive on LPG because it shoot's badly, the engine even stalls (looks like to the air filter side, the air filter should be squashed now because of the shooting). Petrol seems better, possible to drive, but only smoothly stepping on the pedal, because the harder stepping the worse it works (backfires/shoots).
Paper clip test now shows only (12) 42 and 43 codes.
Thinking of checking/cleaning the wiring connections to the ICM again and other modules, because during cleaning of the bracket of ICM I found the connection to ICM had oxidation. But witch exactly wiring connections should I check (were to find them)? And what else? Maybe to change the coil-to-spark plug wires? Would that help..? Running out of ideas.. 43 is Knock sensor, could this do something with the shooting/backfiring?
Thanks again for the tips guys, we are slowly but getting to the goal - removing the check engine light from the dash and feeling the true power of the GM 3.8 monster !
