You can get a 1999 Ford Taurus 3.0 liter engine vacuum diagram from Ford service manuals. The service manuals will be available, for free, at most local libraries.
I need diagrams for both the timing marks and timing diagram for 1999 Ford Taurus 3.0 Vin S DOHC
On a V6 Ford Taurus : firewall 1-----2-----3 4-----5-----6 front of vehicle > driver
if it is a dohc engine then you may have to remove the intake manifold
Please place this in the correct category. The Ford Taurus never had a 2.0 liter inline 4 cylinder.
The 2013 Ford Taurus has double overhead cam (DOHC).
The 2010 Ford Taurus has double overhead cam (DOHC).
The 2014 Ford Taurus has double overhead cam (DOHC).
The 2012 Ford Taurus has double overhead cam (DOHC).
The 2009 Ford Taurus has double overhead cam (DOHC).
The 2011 Ford Taurus has double overhead cam (DOHC).
The 2008 Ford Taurus has double overhead cam (DOHC).