ok so i got into my car this morning to take the dredded mrs to work, and when my car got warm it juddered really hard and my oil gauge went off. as soon as i set off to drive again it would judder and everything would be back to normal.. and it has been doing it all morning!!!

it happended last year and tha garage said my throttle body needed cleaning out, but i cleaned my throttle body 2 weeks ago with lint free cloth and carb cleaner. i was told it could be my air sensor next to my throttle body but i was thinking could it be my auto choke playing up or something??

i have a 1.6 sxi astra g 16valve and so on...
cheers