850 t5 auto jerking at high boost

[brett5]

im after some advice, when i put my foot down hard say like down the slip road to get to 70 ;) it seems to like slop for a split second at high revs when changing to the next gear, if this makes sense, has anyone else had this problem ?

[T5frankie]

probably plugs or leads or is it only when changing gear?

[brett5]

only when it changes gear at high revs mate

[T5frankie]

probably could do with fresh box fluid

[brett5]

was thinking that but waiting till i do the inner cv boots cos they are shocking lol only had it a couple of weeks so just little niff naff and trivia to do, ie flame trap and rocker gasket even though i cant find anywhere that does them apart from volvo

[T5frankie]

partsforvolvos.com are quite good

[crasin33]

Could it not be hitting boost cut if only doing at high boost, I would check all vac pipes etc

crasin

[merc85]

Flywheel sensor mate all day long

[brett5]

Thanks for that but now its missing now, all I did was put. New oil breather pipe on and now its hunting but not all the time,

[AndysR]

Thanks for that but now its missing now, all I did was put. New oil breather pipe on and now its hunting but not all the time,

Are you sure you haven't created a vac leak by doing the above?

[merc85]

Thanks for that but now its missing now, all I did was put. New oil breather pipe on and now its hunting but not all the time,

Could be leads, but id say more likley flywheel sensor.

Stage zero is a must before any tuning.

[brett5]

I'm going to have a better look in the morning I've placed a few knackered van pipes and I've just bought a idle air valve just encased its that