S40 V40: - Vvt issue

S401971 · Jun 15th, 2022, 19:08

Hi..... I own a 2002 s40 with only 41000 miles on the clock.. this time last year the vvt was rattling so I bought a new one at nearly £250 and my mechanic replaced this along with timing belt and water pump....just started making the noise again... any ideas as can't keep replacing this.... and how can it start sgain in just 13 months.... I appreciate any help thanks.

coljol · Jun 22nd, 2022, 18:47

Hi there
I am on my third S40 classic and had to change the VVT pulley on the last two
There is a small gauze filter in the gasket under the VVT solenoid which must be changed when you change the VVT pulley
The main reason the VVT fails is due to lack of oil changes, the sludge in the oil blocks the gauze filter and the very small oil galleries in the VVT pulley, you may wish to try changing the VVT solenoid gasket for a new one and drain the oil, put in an engine flush, let the car idle for at least an hour then drain the flush and put in new oil
This may clean out the VVT galleries and save you having to change the VVT pulley again however if this does not work, I would repeat the engine flush again before changing the VVT pulley to ensure all the sludge has been flushed out
Hope this helps

Jun 15th, 2022, 19:08	#1
S401971 New Member Last Online: Jun 15th, 2022 19:08 Join Date: Nov 2018 Location: Bedford	Vvt issue Hi..... I own a 2002 s40 with only 41000 miles on the clock.. this time last year the vvt was rattling so I bought a new one at nearly £250 and my mechanic replaced this along with timing belt and water pump....just started making the noise again... any ideas as can't keep replacing this.... and how can it start sgain in just 13 months.... I appreciate any help thanks.

Jun 22nd, 2022, 18:47	#2
coljol Junior Member Last Online: Feb 15th, 2024 08:08 Join Date: Feb 2015 Location: Leven	VVT rattle Hi there I am on my third S40 classic and had to change the VVT pulley on the last two There is a small gauze filter in the gasket under the VVT solenoid which must be changed when you change the VVT pulley The main reason the VVT fails is due to lack of oil changes, the sludge in the oil blocks the gauze filter and the very small oil galleries in the VVT pulley, you may wish to try changing the VVT solenoid gasket for a new one and drain the oil, put in an engine flush, let the car idle for at least an hour then drain the flush and put in new oil This may clean out the VVT galleries and save you having to change the VVT pulley again however if this does not work, I would repeat the engine flush again before changing the VVT pulley to ensure all the sludge has been flushed out Hope this helps

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