 there is a prblem also with the upper intake gaskets r
they are rubber and have been known to callasp on the 3.8 often
will cause a ruff idle and stall and gradully worsen as time goes on
you can check this by starting the car and at idle spray either around the upper intake(plentum)gasket if there is a problem you will get an elivated idle at the spot of the leak
****be very carefull "NOT" to spray electrical sources as either is very flammable*** | 
