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Hi all new to the forum with a 2.5t issue

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Old Jul 13th, 2019, 20:17   #1
Daz86
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Default Hi all new to the forum with a 2.5t issue

Hi all I’m new to the forum and new ish to volvos ive had my 2004 v70 2.5t about 8 months now I love the car but it’s rally down on power 1st & 2nd gear is fine pulls rally hard then change to 3rd and it pulls them the power dies within 2/3 seconds and the the power dies down . My spark plugs would appear I’m running lean or hot I personally think lean . But I get mixed feelings . Black exhaust tip and eggy smell after giving it some witch means it’s rich . I’m running 0.5 boost and holds it all the way up the Rev range in any gear .fuel rail holds 60psi at idle . Compression is good . But I have spotted that the exhaust vvt pulley is retarded and the inlet is advanced could it be that ? Or a lambda sensor
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Old Jul 15th, 2019, 11:01   #2
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No ideas anyone
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Old Jul 15th, 2019, 19:25   #3
reggit
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Absolutely no idea on the 2.5t engine, but have vida if you want to see what codes it's reporting.
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Old Jul 15th, 2019, 21:28   #4
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Thanks for the reply lol I’ve not got Vida but got a good code reader witch displays live date and no codes stored tho . I’ve ordered a fuel to air ratio gauge to try and identify if I am running lean or not. I’m thinking more the vvt exhaust hub as it’s set to retarded and frowning the cam signals off . Ive not got a cam locking tool I might just rent one from my local motor factors to check and reset timing and vvt hubs .

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Old Jul 15th, 2019, 21:31   #5
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Are you in Preston Lancashire sorry I miss read your message. Would be brilliant if you where

Last edited by Daz86; Jul 15th, 2019 at 21:36.
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Old Jul 15th, 2019, 21:35   #6
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Quote:
Originally Posted by Daz86 View Post
Are you in Preston Lancashire sorry I miss read your message
Nearly, Longridge.
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Old Jul 15th, 2019, 22:33   #7
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has someone cocked up the timing belt change and mis timed it?
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Old Jul 16th, 2019, 09:43   #8
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Quote:
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Nearly, Longridge.
Not far away at all thanks for the offer might take you up on that
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Old Jul 16th, 2019, 09:46   #9
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Originally Posted by barrybritcher View Post
has someone cocked up the timing belt change and mis timed it?
I’ve been thinking that might be possible need to get a cam locking tool sorted out definitely something I want to check and set the exhaust vvt hub the same as the inlet hub
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Old Jul 18th, 2019, 18:35   #10
VOLVOBOY
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Hi.
It`s worth checking the VVT Solenoid or Solenoids. It`ll only cost the gasket.
On high mileage / lousy oil change history engines these can be gummed up
and sticky. ( like the linear solenoids in the gearbox).
With the solenoid remove you can put 12V across it and see inside if the pintle is moving on a full stroke.
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