I have small problem with my Escort 1.8 16V 96kW. When I moving on 1st gear cold engine and on low throttle, it is jerking and I saw on lambda indicator rare mixture, but on cold engine must be rich mixture. I check with multimeter :
temperature sensor for ECU - looks OK
master air flow - looks OK

When lambda start work (begins pulsating), it is OK.
On diagnostic nothing - 111.
Please help me.
Thank you