Re: How do you change a 2000 Jeep Cherokee alternator?
I did this, its a pain. First disconnect your battery. Then loosen the tension pully - there are two long screws on the top of your engine - they go thru something, i cant remember what, then use a screw driver to pry it back and pull the belt off your alternator. As for the alternator itself - you have to climb underneath the car to get it out, and there's not much room for hands - if i remember correctly there are 2 or 3 bolts on it. once your drop it down there is a strange wire clip you need to unplug. Call around for alternator prices, i was quoted from 169 to 305. If you got the dough take it in - of the 4 cars ive put alternators in this one was by far the worst.
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I would have a load test done on the battery as there is a dead cell evident from the number of jump starts you need. Have an auto electrician test the alternator for charge rate and out put. check drive belt condition and tension.
You can have the alternator tested for free at your local parts store...easier if you can drive it to the auto parts store:) Sounds like it is the alternator...in rare cases the starter can have a short that causes this drain...but usually takes overnight...my guess again is the alternator...Is the timing belt scheduled for a change? This repair is not for the meek...Hope this helps.
How can the Alt and Battery be good, but not charging? The Voltage Regulator is inside the alternator. Keep out of the Parts Store and take it to a shop and have it checked on the truck. you may have wiring issues.
First: Are your Battery Cables (inside) and Battery Post nice and shiney? It is amazing how corroded/oxidized cables and post will kill a battery. Get then bright and shiney.
To test the Alternator. Start the Vehicle. You can Jump it if you have to. With the Engine running, disconnect the Negative Cable from the Battery. If the Engine dies, it is a bad alternator.
Was the "new" Alternator new or remanufactured?
Was it the correct alternator inespecially 'amps' for your particular vehicle?
Take the "new" alternator off and have it tested at auto parts store where you bought it.
Any remanufactured alternator may pass the factory inspection but will fail at the auto parts store. Just because it came out of a new box, and looks new, doesn't mean it works new.
Always when buying and part with a "motor" attached to it from an autoparts store, insist that the new one gets bench tested.
If this does not fix the problem:
Are your belts slipping? Worm out, loose or slipping belts will not turn the alternator pulley correctly and draw the battery dead.
Inspect the Red Positive Wire coming off the Alternator back to the battery. Look for any burnt, melted, or shorted areas.
The Battery Starts the vehicle. The Alternator runs the engine and trickle charges the battery.
Let me know if this helped, or if you have addtional information or questions. Feel free to contact me at FixYa.com!
your best bet would be to go to a local parts store and purchase a Haynes manual for your specific vehicle, this will give you step by step instructions as well as all the required torque specs. The Haynes manuals are around $ 25.00 canadian. hope this helps you.