V70: Engine - Help: Stuttering 2.0T Polestar

StacyCash · Aug 21st, 2017, 07:24

Hey All,

I have a problem with my 2011 V70 2.0T Polestar.

A few weeks ago it started to stutter when making a long corner at speed (think a clover leaf motorway slip road). When straitening after the corner under full throttle it seems to have a stutter, once, and then recover to normal.

Last week it got quite bad (the auto box also started to think that I was going much quicker than I was and started changing up really early, and not letting me change down to lower than 5th at 55mph) so I took it to the garage.

They found a fuel pressure code on the computer, but could not find anything wrong with the individual components, and they couldn't find any loose connections.

After doing some research they found something with the ECU software, did an update and sent me on my way. (Bye, bye 270 euros!)

The car feels amazing now (so I am guessing there was something in the update!), but this morning when going around the clover leaf the stutter was still there...

Does anyone else have a similar experience, or ideas what it could be?

Thanks in advance, Stace

adsk · Aug 25th, 2017, 09:23

I'm not sure if you'll get an answer. I don't think the 2.0T was ever sold in the UK in a V70/S80 and as most of the forum is based in the UK we won't have any experience.

StacyCash · Aug 26th, 2017, 10:33

And I guess I can't rename it to T5 (which is basically what the 2.0T polestar is...)

tt82 · Aug 26th, 2017, 16:01

As it seems to only happen during acceleration through a high speed corner, it does seem likely to be a loose wire or fuel line getting kinked due to the G-Force.

StacyCash · Aug 28th, 2017, 20:23

I guess I need to either stop playing on the clover leafs or get the back end dismantled to get the tank out then (the garage checked everything they can without removing it...). But they have also said that is a very big job...

It's since happened again, and i have a better idea what is happening now. When under hard acceleration in a sharp corner the ECU thinks that there isn't enough fuel pressure - whether that is from a pipe kink, blockage or electrical gremlin I'm not sure.

Immediately afterwards it goes into a sort of get me home mode - it won't allow me to rev then engine past 3K - I'm guessing to stop itself running lean if it doesn't think it has the fuel pressure. After turning it off and on again it resets itself and drives normally (no loss of power, the car pulls like a train still and I can give full acceleration in a straight line without any problems...)

Aug 21st, 2017, 07:24	#1
StacyCash New Member Last Online: Jul 17th, 2018 13:25 Join Date: Sep 2014 Location: Amsterdam	Help: Stuttering 2.0T Polestar Hey All, I have a problem with my 2011 V70 2.0T Polestar. A few weeks ago it started to stutter when making a long corner at speed (think a clover leaf motorway slip road). When straitening after the corner under full throttle it seems to have a stutter, once, and then recover to normal. Last week it got quite bad (the auto box also started to think that I was going much quicker than I was and started changing up really early, and not letting me change down to lower than 5th at 55mph) so I took it to the garage. They found a fuel pressure code on the computer, but could not find anything wrong with the individual components, and they couldn't find any loose connections. After doing some research they found something with the ECU software, did an update and sent me on my way. (Bye, bye 270 euros!) The car feels amazing now (so I am guessing there was something in the update!), but this morning when going around the clover leaf the stutter was still there... Does anyone else have a similar experience, or ideas what it could be? Thanks in advance, Stace

Aug 26th, 2017, 16:01	#4
tt82 Forum Support Team Last Online: Nov 28th, 2022 17:33 Join Date: Jan 2009 Location: Here.... obviously!	As it seems to only happen during acceleration through a high speed corner, it does seem likely to be a loose wire or fuel line getting kinked due to the G-Force. __________________ The more people I meet, the more I like my dog! 2009 V70 D5 R-Design - Jeade'en

Aug 25th, 2017, 09:23	#2
adsk Junior Member Last Online: Apr 12th, 2024 11:10 Join Date: Feb 2009 Location: Berwick Upon Tweed	I'm not sure if you'll get an answer. I don't think the 2.0T was ever sold in the UK in a V70/S80 and as most of the forum is based in the UK we won't have any experience.

Aug 26th, 2017, 10:33	#3
StacyCash New Member Last Online: Jul 17th, 2018 13:25 Join Date: Sep 2014 Location: Amsterdam	And I guess I can't rename it to T5 (which is basically what the 2.0T polestar is...)

Aug 28th, 2017, 20:23	#5
StacyCash New Member Last Online: Jul 17th, 2018 13:25 Join Date: Sep 2014 Location: Amsterdam	I guess I need to either stop playing on the clover leafs or get the back end dismantled to get the tank out then (the garage checked everything they can without removing it...). But they have also said that is a very big job... It's since happened again, and i have a better idea what is happening now. When under hard acceleration in a sharp corner the ECU thinks that there isn't enough fuel pressure - whether that is from a pipe kink, blockage or electrical gremlin I'm not sure. Immediately afterwards it goes into a sort of get me home mode - it won't allow me to rev then engine past 3K - I'm guessing to stop itself running lean if it doesn't think it has the fuel pressure. After turning it off and on again it resets itself and drives normally (no loss of power, the car pulls like a train still and I can give full acceleration in a straight line without any problems...)

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