I think most if not all issues with crank sensor would show up on DTC in Diag OBDC code/light. Its a puzzle for sure. Sounds like fuel mixture or ignition issue. No Lamda on 620ie right?
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Roast Beef Monster!
Termignoni and Bucci - Italian for pipe and slippers!
S4 Fogarty, S4R 07T, 748, Series 1 Mirage
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