Timing woes

[scuby]

I've got in in time according to vida. It starts around 7degrees codes reset. It settles.in nicely to 2 or 3 degrees.

Visuelly my exhaust cam is retarded bij a tooth and a half to get here.

The idle is choppy.

I even took the vvt off today to fully reset al previous work done by others. I ended up with the same 30 or so degrees out of whack everything isntwlled correctly

So now I have vida telling me all is well. The motor revs up smooth as can be. Never had a bad idle before. And when it's too advanced, it idles smoothly Only while doing timing is the idle rough.

When does vvt come into play? How to diagnose the hub or selenoids? It's all that it can be at this point.

It has a rough idle now but is timed correct per Vida

Idk what to do next.

[scuby]

Thinking out loud: PO had this engine out. In fact it was a replacement. Is it possible he didn't mount the flywheel properly, as in off by 1 bolt and a s a result it's actually the crank sensor that is giving an incorrect reference point?

So that physically pistons to valves reads 30 degrees off but in fact it's on point but the ECM thinks it isn't?

Or are the white block flywheels only mountable in one way?

[scuby]

Bueler...Bueler....?

[Mike Langlois]

Greetings Scuby and Everyone Else,
Did you ever solve the timing issue? I'm dealing with a similar issue on a 2002 V70 X/C. After reinstalling the timing belt multiple times and replacing it also, I keep getting the dreaded trouble code. Runs well, idles well, throws a trouble code as well. There is not lack of proper tooling, knowledge or experience here either. I guess I'm not as impressive as I thought I was! And just for fun, I Modified the Motor for Extra Horse Power. Don't do this unless you have a bit of extra cash; Volvo hot rod parts are expensive or non-existent. I do believe that this Volvo is off to the Independent Repair shop, unless it decides to cooperate.
Mike

[scuby]

Often I think it's best to replace the vvt pulley. It the idea bidea mine was intermittently working

[abscate]

Mike, get a code reader that reads flank angle and you can guide in your VVTs with data rather than trial and error. I wrote this up in the P80s forum, it’s a drag

[deano1]

Hey Gentlemen
Scuby that's a good point mentioning flywheel positioning but pretty sure Volvo would have used a dowel pin to make sure this wasn't an issue during manufacture/assembly.
Did they? I don't remember dealing with this on my 98 T5. Yes, completely different engine!
The other thought I had on this issue was the position of the reluctor ring at the end of the cam. I remember marking that stuff like crazy before removal when working on my 2001 T5.
Yes, it's grooved but?
Last thought was if it's your Exhaust VVT that's not playing nice then just loosen it and move it with cams locked.
It's not keyed so you can move it so you get proper timing.
cheers
Dean