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Home > Technical > TDV8 lacks torque in a strange way but no errors |
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RRSTDV8 Member Since: 12 Aug 2011 Location: Northamptonshire Posts: 9003 |
The TDV8 has port deactivation as the intake ports are set up to give different characteristics at different engine speeds. At low speeds, one intake port is effectively closed, leaving only a swirling intake port active. Above a certain rev point, the other port is opened to give intake filling.
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Mon Aug 24 2020 12:46pm |
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Disco_Mikey Member Since: 08 Apr 2012 Location: Dundee, Scotland Posts: 4416 |
What are the MAF sensors reading at idle, and 2500rpm? |
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Mon Aug 24 2020 7:17pm |
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pga Member Since: 24 Aug 2020 Location: wro Posts: 7 |
Thank you for your answers.
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Tue Aug 25 2020 9:02am |
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pga Member Since: 24 Aug 2020 Location: wro Posts: 7 |
I bought sdd and did some logging.
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Thu Sep 03 2020 1:35pm |
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OvalAutos Member Since: 02 Jan 2019 Location: Cradley Heath Posts: 130 |
Siemens injectors Joe |
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Thu Sep 03 2020 3:19pm |
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pga Member Since: 24 Aug 2020 Location: wro Posts: 7 |
Do you think my issues can be related to injectors? Why? Is there any way I could verify/diagnose that?
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Thu Sep 03 2020 4:36pm |
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OvalAutos Member Since: 02 Jan 2019 Location: Cradley Heath Posts: 130 |
The injectors play a very important role in engine performance. Have a look at this injector report and you'll see that they give different deliveries at different loads as well as various levels of back leak.
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Fri Sep 04 2020 10:28am |
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pga Member Since: 24 Aug 2020 Location: wro Posts: 7 |
Maybe eventually I will get injectors to check, although this is quite an operation.
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Fri Sep 18 2020 11:49am |
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pga Member Since: 24 Aug 2020 Location: wro Posts: 7 |
Just for the sake of anyone interested. Torque converter was the cause. I got +100Nm at 2,5 rpm after replacement and it is smooth power delivery now. |
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Tue Mar 02 2021 5:35pm |
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gruodiz Member Since: 27 Nov 2011 Location: Klaipeda Posts: 63 |
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Sat Apr 03 2021 5:50pm |
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