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V70 with shudder/stumble on cold starts V70-XC70

I would suspect the Idle Air Control valve. It's pretty easy to pull it out and clean it out using throttle body cleaner (just soak it and shake it - repeat a few times).

When it's clean you can give it a good coat of WD-40 inside to keep it lubed and keep the water that condenses inside from affecting it.

I try to clean mine about once every couple of years as a pre-emptive measure.

--
1998 V70 AWD->FWD->AWD Turbo 220k+






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