2000 S80 T6 VVT timing assistance required

MyS40T4 · Post by **MyS40T4** » 07 Feb 2014, 21:35

Hello,

I've changed the water pump on my car and put it all back together - but it runs like a dog... The engine rotated fine without binding and all the marks lined up numerous rotations to check. The cars been off the road for a bit over a month - I pulled out the injectors and cleaned/tested them and they were all OK. I checked the coil connectors and they look OK. I get no codes whatsoever...

I locked the cams at the gearbox end, painted the bolt heads on the exhaust cam to VVT unit so I could reassemble it as it came off. I suspect that I've rotated the exhaust cam too far clockwise when putting on the cambelt. When the cambelt went on, all the cam marks aligned perfectly but I'm pretty sure the exhaust cam mark was slightly off (counterclockwise to the timing cover mark) originally i.e. prior to dissassembly.

How do I recover from this and can I do it without removing the timing belt again? Can I lock the exhaust cam, and slacken the cam pulley and rotate the cam pulley counter clockwise in the slots?

I've looked at the 'setting the VVT' sticky but it doesn't help other than to suggest I'm possibly 1.5 teeth off on the exhaust cam.
Agghhhh!!
Does the exhaust cam need to be 1.5 teeth counterclockwise when the cam belt goes on?

Cheers,

Chris

MyS40T4 · Post by **MyS40T4** » 16 Feb 2014, 02:32

An update on this - I tried various things and ended up locking the exhaust cam at the gearbox end, slacking the 3 bolts on the cam pulley and rotating the VVT assembly clockwise while keeping the cam pulley still. This gave the 1.5 teeth shift I needed... However, the engine still ran like a dog... So I ended up checking the ignition coils in case I'd messed something up and that's when I came across the ground wire for the ignition coils not attached to anything (it's near 2nd coil from the gearbox end).
Sorted that out and the engine ran fine!!

So I took it for a drive - new water pump, turbo oil drain seal, turbo vacuum lines, heater hoses, poly control arm bushes, ball joints, poly engine brace bush. Drove beautifully.

Gave it a bit of welly and it went well - until I stop at an intersection and didn't have 1st or 2nd gears anymore... Manually selected 3rd, limped home and parked it in the garage.

Gotta laugh!!! Now to pull the gearbox out...

Bluevanacd2005 · Post by **Bluevanacd2005** » 16 Feb 2014, 10:27

If its not one thing its another... Sorry to hear the news. The way I timed my 2000 T6: I lined all the marks up and put the belt on, leaving the pulley bolts loose. Then I locked the cams at the gearbox end and tightened the pulley bolts. First time I tried to start it, nothing happend. Turned out I forgot to ground the two wires on the valve cover. After I hooked them up it ran flawlessly.