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Title: B5 S4 2.7T - VVT not advancing correctly on bank 1, bank 2 working correctly Post by: jmont23 on March 19, 2020, 07:52:04 AM Has anyone had this issue before? Looking through my logs, it appears to have started on May 10th last year after about 10ish runs at the dragstrip. So far, I've verified the solenoids are in spec and even swapped them, but the issue stays on bank 1. No codes and the wiring checks out. Next on my list is to replace the CCT. Assuming the CCT is bad or there is some sort of oil blockage that isn't allowing the CCT to retract enough to loosed the cam chain for full intake cam advance.
Just looking for suggestions before I actually replace the CCT. Notice in the second image the shape of the Bank 1 cam angle. There is a consistent drop around 4krpm and recovery to ~7 degrees in a lot of my logs. (https://i.imgur.com/uPxdFjK.jpg) (https://i.imgur.com/VrLPhvf.jpg) Title: Re: B5 S4 2.7T - VVT not advancing correctly on bank 1, bank 2 working correctly Post by: jmont23 on April 05, 2020, 08:45:37 AM Replaced the CCT and the issues went away. CCT must have just went bad.
Title: Re: B5 S4 2.7T - VVT not advancing correctly on bank 1, bank 2 working correctly Post by: vwaudiguy on April 05, 2020, 10:43:58 AM Thanks for following up.
Title: Re: B5 S4 2.7T - VVT not advancing correctly on bank 1, bank 2 working correctly Post by: nyet on April 05, 2020, 11:09:55 AM 2nd. It is appreciated, since these sorts of things do the most to help others.
Title: Re: B5 S4 2.7T - VVT not advancing correctly on bank 1, bank 2 working correctly Post by: BlackT on April 05, 2020, 11:16:39 AM sorry for question but what CCT is? First time I heard this short, and google doesen't help
Title: Re: B5 S4 2.7T - VVT not advancing correctly on bank 1, bank 2 working correctly Post by: Blazius on April 05, 2020, 11:47:36 AM Camshaft Chain Tensioner
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