so everything is running perfect in the car except one thing...

sometimes at random, but seems to be happening more and more.... I accelerate from a stop light, or roll a stop sign, or slow down to take a tight turn, when I accelerate forward, it will feel like it will want to stall out but then will continue to give acceleration, and it makes you jerk back and forth when this happens.It happens in reverse too.

I brought it to Volvo they took it for a 20 mile test drive and found nothing. no codes no DTCS from them either.01s80 t6.

They cleaned the throttle body just1.5 months ago.

 

That might be the boost control solenoid.

 

Sounds similar to the problem I've been having.

One thing I did work out was that a faulty TCV or boost solenoid, or waste gate solenoid will just divert exhaust gases away from the turbo so stopping the turbo's compressing the air, it won't slow the engine down at all, its won't cause it to seem like its stalling or it won't reduce engine RPM's, it will just decrease (massively) the engine power.

Double check to see if your engine revs are dropping etc.

A faulty MAF on the other hand can cause engine revs to drop ( thats what I think I've got, but its expensive to buy a new one just to test it), or I'm guessing other sensors could do aswell.

Stu

 

yeah it sounds more like the boost control solenoid, its just hard to get them to find that problem lol. I think my MAF sensor should be fine, its was replaced just 1.5 years ago.