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Re: serpentine belt came off need to know how it goes...
This is hard to exsplain without showing you a photo ,but i will try. first get the belt around the engine crankshaft which is the pully closest to the bottom and center of the engine. when standing in front of engine start to lead the belt to the right and connect to power steering pump then up to generator, next thare is going to be a smooth pully not groved like the others to the left,put the smooth side of the belt on bottom of this pully and continue left to the ac/compressor go around ac/compressor andstraight down to the belt tensioner , and then right over to the water pump which has a smooth pully not grooved. remember the smooth pullys will always carry the smooth side of the belt and the grooved pullys the grooved side of belt. the belt tensioner will half to be released by a serpantine belt tensioner tool sold at your local auto parts store. these instructions is for 3.8 liter engine, if you have a 4.6 liter engine it will be different, so repost stating that you have a 4.6 if this dont help
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There is no adjustment on the serpentine belt. I'm assuming that you have a 4.6 since it's an XR7. There is a spring loaded tensioner that keeps the belt in proper adjustment. The tensioner may be bad, or just corroded in one position. If there's no diagram for the belt routing under the hood...draw one. Then remove the belt and carefully persuade the tensioner to move. Careful not to break it or it's mount. If it doesn't move, it's going to need replacing. It's the one on the little arm, the arm should move.
the serp belt is driven by the crankshaft pully and also has a tensioner may i suggest you check the crank pully it mayhave parted at the rubber damper and is spinning off line/back and forth also check the tensioner that runs on belt it may have failed or come loose
try autozone.com to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you
To remove the alternator, you have to remove the serpentine belt. They have a tensioner in which you place a socket wrench and pull on it and it loosens the belt. Before removing the belt notice how it is routed. Some vehicles have a diagram on the hood or on the front near the grill.You take the belt off. Then you remove the alternator by removing the bolts attaching the alternator to the engine. There are two or three bolts you have to remove. Two of them are fairly big bolts. About a size 14 metric or so. Disconnect the negative battery cable battery so you won't hit any grounds.Then take off the plugs from the alternator and the small nuts that hold the wires. Notice how they are placed before removing so you can know where each plug goes.Then replace the new alternator. Plug it back up and install the same way you took it out.Replace the belt starting from the left to right and pull on the tensioner and reinstall.