It happen today.

Anubisxc70 · Jul 21st, 2018, 20:25

2004 XC70 D5 awd

Hello.
Today i went out with the family to the dog beach. On a junction i stopped, when it was my turn i accelerate and the engine service MSG came on display ( no engine light or triangle). I pressed the pedal and nothing, slow acceleration
once it got to the 2300 2500 turbo kicks in and it goes. Under that same slow acceleration, close to 2300 turbo kicks and here we go. Once turn off key and back to on....all gone?!

Any explanation???!!!

Many Thanks

AndyV7o · Jul 21st, 2018, 21:02

Sounds like an egr issue, a guy had similar probs on here recently, the ecu was water damaged and was opening the egr when it should be shut, choking the engine up till egr range around 2300-2500 then woooooft!
Not necessarily saying this is your specific fault, but a good point to investigate, it took hours for the root cause (ecu) to be indentified.

Anubisxc70 · Jul 21st, 2018, 21:43

Thank You Andy.
My ECU is very dry because i have protected it just in case when i got the car..
Would that be a fault you could see on vida?
I only have two codes....
Air sensor inside the cabin and cruise control that works fine....???!!

AndyV7o · Jul 21st, 2018, 22:20

Dunno im afraid!

Heres the previous thread https://www.volvoforums.org.uk/showt...=282449&page=2

Anubisxc70 · Jul 21st, 2018, 22:26

Thank You.
I will check it anyway, i have clean it a year ago, and it was a bit durty. ...
Many thanks

davebb · Jul 21st, 2018, 22:39

sounds like a VNT problem
Dave

Anubisxc70 · Jul 22nd, 2018, 07:16

Hi Dave.
Excuse my ignorance, being a VNT problem should happen at all rpm?

ma70 · Jul 22nd, 2018, 16:12

Quote:

Originally Posted by Anubisxc70

Hi Dave.
Excuse my ignorance, being a VNT problem should happen at all rpm?

If the VNT is stuck in it's "high speed/high boost" mode, then the turbo would be very "laggy" and may well not seem to kick in until higher revs.

Definitely an avenue to look into if the ECM all seems fine.

Jul 21st, 2018, 20:25	#1
Anubisxc70 Master Member Last Online: Sep 25th, 2021 23:16 Join Date: Aug 2017 Location: Sturminster Newton	It happen today. 2004 XC70 D5 awd Hello. Today i went out with the family to the dog beach. On a junction i stopped, when it was my turn i accelerate and the engine service MSG came on display ( no engine light or triangle). I pressed the pedal and nothing, slow acceleration once it got to the 2300 2500 turbo kicks in and it goes. Under that same slow acceleration, close to 2300 turbo kicks and here we go. Once turn off key and back to on....all gone?! Any explanation???!!! Many Thanks

Jul 21st, 2018, 22:20	#4
AndyV7o Premier Member Last Online: Jun 21st, 2021 20:47 Join Date: Jun 2018 Location: Creswell	Dunno im afraid! Heres the previous thread https://www.volvoforums.org.uk/showt...=282449&page=2 Last edited by AndyV7o; Jul 21st, 2018 at 22:25.

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Jul 21st, 2018, 21:02	#2
AndyV7o Premier Member Last Online: Jun 21st, 2021 20:47 Join Date: Jun 2018 Location: Creswell	Sounds like an egr issue, a guy had similar probs on here recently, the ecu was water damaged and was opening the egr when it should be shut, choking the engine up till egr range around 2300-2500 then woooooft! Not necessarily saying this is your specific fault, but a good point to investigate, it took hours for the root cause (ecu) to be indentified.

Jul 21st, 2018, 21:43	#3
Anubisxc70 Master Member Last Online: Sep 25th, 2021 23:16 Join Date: Aug 2017 Location: Sturminster Newton	Thank You Andy. My ECU is very dry because i have protected it just in case when i got the car.. Would that be a fault you could see on vida? I only have two codes.... Air sensor inside the cabin and cruise control that works fine....???!!

Jul 21st, 2018, 22:26	#5
Anubisxc70 Master Member Last Online: Sep 25th, 2021 23:16 Join Date: Aug 2017 Location: Sturminster Newton	Thank You. I will check it anyway, i have clean it a year ago, and it was a bit durty. ... Many thanks

Jul 21st, 2018, 22:39	#6
davebb Premier Member Last Online: Yesterday 19:02 Join Date: Aug 2013 Location: Emsworth,hants	sounds like a VNT problem Dave

Jul 22nd, 2018, 07:16	#7
Anubisxc70 Master Member Last Online: Sep 25th, 2021 23:16 Join Date: Aug 2017 Location: Sturminster Newton	Hi Dave. Excuse my ignorance, being a VNT problem should happen at all rpm?

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