Bad Idle

[scotty boi]

hi everyone have a really bad idle, tried everything coil packs changed, sparkplugs changed, aac cleaned, fuel filter changed, air flow meter cleaned. i haven't changed the fuel pump but don't think its that could it be my cas{crank angle sensor} or injectors, only happened about 6000 ks past timing belt change. Please any help cant find the answer anywhere. By the way it shudders every 30 secs or so on idle only, boosting is fine no probs.

[Stinky Rooster]

has anyone checked the timing since the belt was done?

[scotty boi]

no they haven't ill go and get that checked out. keep you

posted

[GTS-t VSPEC]

Try swapping your AFM with one from a working car, just to double check it's not that.

[Hanaldo]

How bad a shudder is it, like you can visually see the whole engine shake? Does it cruise ok or does it sort of lurch unless you are accelerating?

[syfon]

+1 for timing.

Also clean out the throttle body with some carby cleaner.