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The alternator in your car is one of the easiest fixes you can do. First, remove the NEGATIVE (-) battery cable.
You must relieve the tension on the serpentine belt by loostening the retaining bolt, then remove the wiring harness plug from the back of the alternator, then remove the two retaining bolts from the alternator. Reverse the procedure to install the new alternator, making sure that belt tension is adequate. Replace the netgative battery cable last, and test.
If the serpentine belt is loose, replace the belt.
On the right side of engine locate the alternator at the very back, directly below it is the tensioner. There is a square hole a 3/8" ratchet will fit into. Turn counter-clockwise to relieve the tension, at the same time remove the belt from the alternator pulley, let relax. In the center of the tensioner portion (not the pulley for the tensioner) there is a bolt. Remove the bolt and the tensioner. When installing new tensioner there is an alignment pin on the rear, make sure it fits in the alignment hole before tightening the bolt (it will break new tensioner). tighten the bolt, reinstall ratchet head relieve tension, and reinstall belt. Be careful with the belt when loose, that you don't lose the directional routing. There should be a diagram on a bracket just above the water pump, but if not draw it out before removing the belt.
This uses a self adjusting tensioner.This vehicle should have a series II 3.8L.The adjuster is located just under the alternator and slightly to the right.If trying to remove the belt a 15mm headed bolt runs through the tensioner pully turning it counter clockwise should loosen the belt tension.
A good repair manuel to get which has picture step by step, Hanyes auto repair manuel at any aut part store for 20 bucks is a great investment. .0l Engines The 3.0L engines were equipped with either the Nippondenso or Bosch alternators.
1. Disconnect the negative battery cable. 2. Install a 1/2 in, breaker bar in the tensioner slot. Rotate counter-clock- wise to release belt tension and remove poly-V belt. 3. Remove the alternator mounting bolts (2) 4. Remove the wiring and remove alternator. To Install: 5. Position the alternator onto the engine, then install the wiring. 6. Set the alternator against the mounting bracket and install the mounting bolts. 7. Rotate the tensioner counterclockwise and install poly-V belt. 8. Connect the negative battery cable.
3.3L and 3.8L Engines The 3.3L and 3.8L engines were equipped with the Nippondenso alternators.
1. Disconnect the negative battery cable. 2. Remove the alternator drive belt, by relieving the tension on the dynamic tensioner 3. Loosen the nut on the support bracket at the exhaust manifold, do not remove it. 4. Remove the alternator tensioner/power steering bracket bolt. 5. Remove the tensioner stud nut and remove the tensioner. 6. Remove the alternator mounting bolts. 7. Remove the power steering reservoir from the mounting bracket, do not disconnect the hoses, and position it out of the way. 8. Remove the alternator support bracket bolts, Remove the intake plenum to alternator bracket bolt and remove the alternator support bracket from the engine. 9. Remove the alternator from the engine and disconnect the electrical leads. To Install: 10. Install the alternator in position on the engine and connect the electrical leads. 11. Install the alternator support bracket, tighten the retaining bolts to 40 ft. lbs. (54 Nm). Install the power steering reservoir on the mounting bracket. 13. Install the alternator mounting bolts, tighten the bolts to 40 ft. lbs. (54 Nm). 14. Install the tensioner and tensioner mounting stud. Install the retaining nut on the exhaust manifold. 15. Install the alternator belt, insert a 1/2 in. extension into the square hole in the tensioner and turn the tensioner. Tighten the tensioner bolt. 16. Connect the negative battery cable.