Recently my engine has started to be unresponsive when driving away (from cold).
It's only from dead cold (e.g. first drive of the day).
It's almost like the throttle is disconnected and I just get pulled along on the cold start RPM to about 10mph.
After a couple of hundred yards, it goes back to normal. I recall it happening last year in the cold weather briefly too.
If i start it up from cold and don't do anything, it'll run for a minute or so, then hunt a bit, maybe another minute, then run normally.
I can't see it being mechanical, I did a pretty comprehensive overhaul during lockdown 1, including new cam, lifters etc. There's no fuel/oil/water cross contamination.
During the overhaul, I cleaned the idle air controller, intakes, etc etc. Maf is OK. Coils, plugs and leads all new.
This is running on petrol, not LPG (takes about 5 mins to get warm enough for the LPG to switch over).
Nanocom shows P0172, P0175, P0134 but has done since I owned the car, which i put down to the LPG conversion upsetting the numbers...