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Hi all,
I have this problem that's been bothering me for a while - lumpy performance when cold.
This is in addition to the lumpy idle others on this forum describe.. this is while I'm driving.
It's hard to explain but it feels a bit jumpy and touchy, especially noticeable when in high gears...
As mentioned above, could be TDC sensor. I had similar issues until I bought a new one off eBay and replaced.
Very easy to fit, and no starting problems since.