Did I Fry My '06 V70??

Toby411 · Post by **Toby411** » 31 Aug 2026, 10:33

Thanks for the suggestions, David. Yes, I used the Volvo specific tool for locking the camshafts. Timing marks line up with the cover notches. Torqued the center bolts to spec. Will work on checking the relative pulley to camshaft position.

Post by **scot850** » 31 Aug 2026, 19:33

I have not come across this myself yet, but do the cam variator units go bad? If they do what affect do they have? I would have expected the timing not to respond correctly even if the CVVT solenoids are working and the cam position sensor are working as they should.

Neil.

Toby411 · Post by **Toby411** » 01 Sep 2026, 07:34

I actually just replaced the exhaust cam hub the other day, though I haven't yet had time to reassemble and test start. There was a lot of play in the hub (not rotational, but in line with the shaft) even with everything torqued and the cams locked down. I'm thinking that might be the source of the P0017 code. Fingers crossed...

Post by **scot850** » 01 Sep 2026, 08:43

I am thinking this may be the issue with an 02 XC70 that I chased the issue on and never got the chance to complete. Car has done in excess of 40kkm since I saw it last. I think that wither the hub is bad or whoever fitted the belt got it a tooth out. Car has about 260k miles on it.

Neil.

Post by **abscate** » 04 Sep 2026, 07:46

scot850 wrote: 31 Aug 2026, 19:33 I have not come across this myself yet, but do the cam variator units go bad? If they do what affect do they have? I would have expected the timing not to respond correctly even if the CVVT solenoids are working and the cam position sensor are working as they should.

Neil.

I have rarely seen the cam hubs code, but they do get loud sometimes - not sure where the noise comes from.

My T5 99 had an exhaust go loud at about 175k, used replacement now at 265k