Sorry for the delay.
I have a couple of Dynastys and two Caravans with the 3.3L engine. On the Dynastys, which are the same body style as your car, the nut for the tensioner can be reached from over the top of the engine, but it's hard to find until you've seen where it is from underneath. It's a 15mm nut. You'll need a box wrench. As I recall, there isn't room for a socket and ratchet because the ratchet will hit the exhaust manifold. Also, there isn't a lot of room to swing the wrench. My solution was to use two different wrenches. One was a Craftsman and one was a Snapon. The reason was the teeth were just different enough that one of them would turn the nut far enough that the other wrench would fit on it for the next bite. It was easier to alternate wrenches than to try to swing one wrench far enough so you could grab it again.
The power steering pump doesn't have to be moved to access the tensioner's nut. When the car is on a hoist, it's pretty easy to reach up from behind the cross member to get on the nut, but as I mentioned, once you know where it is, it can be reached from over the power steering pump. You'll want to do that when the engine is cold because you'll be reaching next to the exhaust manifold.
When you install the new tensioner, be sure there's no rust or scale stuck on the mounting plate. Any debris stuck in there will make the tensioner sit tipped or turned slightly, and that will set up a belt squeal.
Tuesday, September 15th, 2015 AT 5:00 PM