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Tina,
I just cleaned the PCV, EGR, and throttle body valve this week. It is not dificult at all, essentialy just taking off bolts and replacing them.
Couple of things you need to know.
Get a replacement gasket for the EGR, and Throttle body at the dealer ship.
Buy a can (or two) of throttle body cleanor from any parts store.
The bolts are in metric sizes.
Then just remove the parts and clean them very well and replace them in reverse order. Do it slowely and even make notes of where everything goes that you removed so when it comes time to replace things, it goes smoothly.
Give yourself at least 3 hours to finish.
If you have any questions post them and someone will help!
And use volvospeed's bay13.
good luck
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