Question about 1999 Volvo S80

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Need help readjusting cvvt timing on volvo s80

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  • blackie50 Sep 24, 2010

    hi the link you gave me is from lab rodent i already saw that it doesant say anything on how to readjust the cvvt timing on the volvo s80 need more detailed info thank you

  • blackie50 Sep 25, 2010

    hi do i have to loosen the three screws on the cvvt unit in order to set it please let me know also is there a diagram i can see thank you

  • blackie50 Sep 29, 2010

    hi still dont understand it do i have to aligne the intake cam in order for me to performe this step please help if posible need more detailed info with diagrams thank you very much

  • blackie50 Oct 02, 2010

    hi try to set the cvvt cam timing on a 1999 volvo s80 2.9 have tried a couple of things but no luck need diagram with detailed instruction need help thank you

  • blackie50 Oct 04, 2010

    c v v t timing

  • Anonymous Mar 31, 2014

    2.0

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4 Answers

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Check fig:---- need help readjusting cvvt timing on volvo s80 - 7dca2e9.jpg

CVVT always on intake because cam sensors are always intake.

Slacken off, but do not remove, the (3) screws which secure the timing gear pulley to the variable valve timing (VVT) unit.
Press the variable valve timing (CVVT) unit / timing gear pulley on the camshaft.

Install the center screw which secures the variable valve timing (CVVT) unit to the camshaft and tighten slightly.
Turn the variable valve timing (CVVT) unit anti-clockwise as far as it will go.
Remove the center screw.
Position the upper timing cover.
Turn the timing gear pulley clockwise until the screws at the oval holes are in the limit position.
Continue turning clockwise until the timing gear pulley marking is 1 1/2 Cog before the marking on the upper timing cover
Note: Do not turn anti-clockwise during this procedure!
Check that the timing gear pulley is still in the limit position in the oval holes.
Tighten the center screw in the variable valve timing (CVVT) unit to 120 Nm (88 ft. lbs.) .
Check that the variable valve timing (CVVT) unit does not rotate when tightening.
Install and tighten the center plug to 35 Nm (26 ft. lbs.) .
Turn the variable valve timing (CVVT) unit clockwise to the limit position.
Turn the timing gear pulley so that the markings correspond.
For more help check fig:-- 0beb8aa.jpg
------------- for more help.There are few links that you will have to click one by one to check full details:--- 1) http://farm3.static.flickr.com/2179/2099374949_b5553ae874_o.jpg 2) http://farm3.static.flickr.com/2345/2100153762_e9b274e71e_o.jpg 3) http://farm3.static.flickr.com/2275/2100153870_88efda5f9f_o.jpg 4) http://farm3.static.flickr.com/2332/2100153906_b2df7dcdcc_o.jpg 5) http://farm3.static.flickr.com/2149/2100153970_435ec94a9a_o.jpg 6) http://farm3.static.flickr.com/2021/2100154012_f63cc81b90_o.jpg 7) http://farm3.static.flickr.com/2072/2100153808_2d04fae063_o.jpg 8) http://farm3.static.flickr.com/2027/2100153828_59eabf2c99_o.jpg

Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Posted on Sep 26, 2010

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There is a tool that locks the crank in the #1 position. There is a plug behind the starter remove that plug push in the tool and that will line the crank. When you turn the crank and line up the cams watch the cam marks, go passed the cam marks 90 degrees and then turn it back, that will set the VVT gear to be in the right position. Now that should line up the crank and the cams. The cam gear tool fits into the slots in the rear side of the cams.

Posted on Sep 25, 2010

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Please check the link below for an detailed answer..

http://volvospeed.com/vs_forum/index.php/topic/88544-variable-valve-timing-diagram-of-the-s80/

If you need further help please do post your comments..

Posted on Sep 24, 2010

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Please clarify "CWT"

Posted on Oct 02, 2010

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1 Answer

2000 Volvo s80 t6 engine will not start.


I'm too familiar with the T6 engine, but I *think* the T6 engine has the CVVT solenoid right by the exhaust cam and they are known to get weird and you need to clean it.
I believe Volvo has a gasket with a screen in it to keep it clean.

The cam sensors are pretty sturdy and rarely fail, so I'd check that last.

Did this happen right after a timing belt change? If so, I'd double and triple check that you got everything lined up exactly right. My process is usually to use white-out to mark the old belt and gears and then transfer the marks to the new belt and if all marks still line up when it's back together I am good (and yes, it's been good this far hehe).

If it's the CVVT sensor, buy a new gasket, remove the sensor, soak it in carb cleaner and give it a "work-out" with 12 volts if you have a battery charger or whatnot. It's possibly a fresh 9v battery might work too.

If you got any other codes, even if you don't think they're related, they might be.

I wouldn't touch any other systems if the car would run before and now won't, and all you touched is the cam timing and that's the code you got. Fix that first, THEN if you have other issues, you can tackle them.

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It sounds like the cams are out of sync. There are very specific directions for re-timing the cams and CVVT unit. You will have to take it to a Volvo specialty shop or to the dealer. You might try V70R.COM or BRICKBOARD.COM. Someone there might have the specific instructions, but they are very involved and require special tools to hold the camshafts in place while torquing the CVVT unit.

hope this helps.

Feb 26, 2009 | 2002 Volvo S80

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