2000 V70 will not run after intial start

zlrig · Post by **zlrig** » 30 Jul 2015, 16:34

Mike, Lee thanks for the info!
Ok, Lee when I set the timing on the exhaust sprocket The 3 sprocket bolts are in the middle of the slots.

So, if I pull off the Exh. cam sensor cover and the intake cam plug with the crankshaft at the timing mark, what should I see?
From what I gather, the slots in the camshafts should be in line with the split line of the cover. Both horizontal, right?

now since the 3 exh. sprocket bolts are centered in the slots, can I loosen them and retard the cam that way? rotate in a CW direction I believe?

Mike, If I hook up the Vida and with the engine running check the activation of the CVVT solenoid what will I see?
Also, while the engine is running can you see the values changing? How about if I rev the engine some? They should change a little I would think.
This is of course depending on whether the solenoid is good of course!
I will hook it up and check it out..
Thanks again for the help!

zlrig · Post by **zlrig** » 30 Jul 2015, 17:30

Well I hooked the car to VIDA and checked things out.
ECM-644A code
Am I right that this code just tells you the cam timing is not where it should be? That It could be advanced or retarded?
I checked the cam duty cycle while running and it reads 55-56%. Is this the sensor output to the ECM ?
The cam shift is approx. 15 and when the engine is accelerated it goes into the neg #"s around -7 or so.
I am going to guess that if I have cam shift that the solenoid is functioning correctly.

Any thoughts?

I am thinking Mike is right. I have the timing off......
Again, do you think I can just retard or advance it by loosening the sprocket bolts and rotating the hub?
It is about centered in the slots at the moment and I am not real keen on taking it apart again to set it!!
Although I am proficient at it now, if I can just do it correctly!!!
Thanks John B.

Post by **Ozark Lee** » 30 Jul 2015, 18:13

Setting the preload is actually pretty easy so long as the CVVT hub was never removed (like you would need to do to change the camshaft seals).

What you do is crank the engine clockwise to the timing marks. From there continue clockwise an additional 90 degrees.

Once you go past the timing marks the 90 degrees go back counter clockwise, back to the timing marks.

At that point loosen the tensioner and pull the timing belt off of the camshaft sprockets. The outer sprocket on the CVVT hub will turn independent of the center and what you want to do is have the outer sprocket mark lined up with the vertical notches as you thread the belt back on.

From there set the tensioner so that the pointer is in the window and crank it back through by hand a couple of revolutions and touch up the tension again.

At that point the bolts in the sprocket slots should not be at either limit but it is pretty rare for them to be exactly centered. Check the tensioner adjustment again and then fire it up. After it runs you will likely need to adjust the tension yet again. It typically takes me three or four iterations to get it right.

...Lee

zlrig · Post by **zlrig** » 30 Jul 2015, 19:32

OK Lee, sounds good, but I did remove the pulleys on both camshafts though.
So I have been timing it without the use of the old timing marks. The only one I have been concerned with is the crankshaft mark. The head came from another engine, so I did not use the existing pulley marks during setup.
If I rotate the engine through a few revolutions and align the crank marks, should the camshaft slots be both horizontal?
So how would you time it from square one?
Thanks JB

Post by **precopster** » 30 Jul 2015, 20:17

I am a visual learner so no matter how many times the CVVT Setup is explained to me in writing I can't comprehend it. Finally I found a You Tube video by Paradox Technology (Volvospeed) that explained it for me. Search for "CVVT Removal and setup volvo" on You Tube and it will come up.

Post by **Ozark Lee** » 30 Jul 2015, 20:18

To time it from scratch you need a camshaft adjustment tool to lock the back of the cams in the horizontal position and set the timing mark on the hub one tooth off before you torque down the big torx screw on the CVVT hub. As I recall that torques down to around 90 ft. lbs. so the home-brew camshaft lockers won't work without bending.

The entire procedure is here:

99 XC Cam Seal Replacement.pdf: (3.5 MiB) Downloaded 161 times

That is for a '99 but it is exactly the same for a 2000.

I think I paid around $165.00 for the tool but I see them now on eBay for about half that price.

...Lee

zlrig · Post by **zlrig** » 30 Jul 2015, 20:37

Thanks for the info!
I have all the tooling, I'll let you know how I make out..

2000 V70 will not run after intial start

Re: 2000 V70 will not run after intial start