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My V6 Sharan with the multivalve motor started then stalled. Ross Tech diagnostics gave cam timing improbable fault codes. Compression test confirmed valve timing problem. Pulled motor and gearbox out and dismantled motor. The small sprocket which drives the camshaft timing chain has lost all it's teeth. They have worn away. Motor has only done 133690 km. Can anyone tell me 1) what caused this to happen? 2) what do I need to replace apart from both chains, the sprocket on the intermediate shaft that has no teeth, the guides and tensioners 3) is there an upgrade to the timing chain system that

Mine is behind the battery on the left hand side. If you take the battery out you have reasonable access to it.. Mines a 2001 V6 Sharan (AYL multi-valve motor with manual gearbox) Regards Alan

Dear Pete, On erWin I found how to test the Hall sensors and they appear to be OK. I then reset the Vagcom fault codes and turned the motor over again to see what fault codes came up. I got the same codes for the 2 cam sensors. Whilst I was turning it over it (a) sounded like it backfire a few times and ( like there was no compression. So I ran a compression test. Ooops the pressures from 1cyl 1 to 6 are 50, 75, 70, 50 48 and 75 P.S.I. respectively. My guess is that the timing chain has jumpes a few teeth. Your thoughts or comment please. I now need to take the cam cover off which is not so e

Dear Pete, Thank you for your response on timing chains. I have a few questions perhaps you can answer. Sometimes the badging in South Africa is different to the UK, so 1) we got the Sharan VR6 which, as far as I can make out, was the 2 valve per cyl engine and then the V6 Sharan which is the multivalve engine. Apart from the cyl heads are there any other differences? 2) I understand when you have the gearbox out to do the chains it makes sense to do the clutch, but why did you suggest changing the cylinder head gasket? 3) You also said upgrading to the Mk4 Poly guides. How do I find out about

Do timing chains snap often and should the be replaced at a certain mileage? My Sharan with a V6 motor as 133000KMS on the clock and I don't fancy having to fix it after snapping a timing chain. Cheers

My V6 started and then stalled and would not start thereafter. I bought the Ross Tech Vagcom interface and it has 3 errors: 3 Faults Found: 16725 - Camshaft Position Sensor (G40): Implausible Signal P0341 - 35-00 - - 16730 - Camshaft Position Sensor (G163): Implausible Signal P0346 - 35-00 - - 16497 - Intake Air Temp. Sensor (G42): Signal too High P0113 - 35-00 - - The workshop manual I have has shown me where to find the 2 camshaft sensor and the wiring diagram, but not how to test them or how to repair this problem. Can anyone help with: 1) Where

I have a 2001 Sharan V6 which had a short circuit in the tail light wiring. The harness is damaged and the Multi function control unit fuse box has been badly damaged. So far I have not been able to get a replacement unit. The part no on my unit is 7M3 962-258M. Later models used 7M3 962258S and then therafter 7M3 962258AD. These same numbers are used on the SEAT Alhambra. The Ford Galaxy uses a part number YM21 14B205CA. Can anyone help by answering the following questions: 1. What is the difference between the M S and AD versions? 2. Can I upgrade to the later version ? 3. I have been able

I have a 2001 V6 Sharan which had an electrical short. The end result being a badly burnt control unit which forms part of the fuse box and relay assembly. The part number on the unit is 7M3 962258M. This box is manufactured by Siemens. Does anyone have a circuit diagram for this Control Unit. The replacement part is going to cost me more than 10% of the value of the car. Other wise can anyone advise where I can find a second hand unit. Any assistance will be appreciated. Alan - South Africa