How to Replace the Alternator of a 1998 Isuzu Trooper

Step-by-Step Guide

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   Step 1: Have a mechanic or auto part store verify that the alternator is bad before deciding to change it.

   Some spillage of coolant will occur.
   
   Make sure to hold up right to reduce spillage., There may be a red rubber cap, slide off before removing nut., The alternator cover plate is a curved plate underneath the alternator that shields it from debris and connects it to the engine., This bolt allows the alternator to swivel in place for ease in attaching the alternator cover plate., Set alternator cover plate aside for later., If not, use the vice grips to pinch down on the clip to dislodge it from the female connector in the alternator., Store in box to be returned to auto parts store for core refund ($),,, If the alternator mount is a tight fit, you may need to use the wood and hammer to gently tap the alternator into place.
   
   The mounting holes must be nearly perfect in alignment for the housing bolt to pass through and thread at the end., Reinstall alternator cover plate first attaching it to the alternator then swiveling it in place to insert the last two bolts.,,,,,,
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   Step 2: Purchase the correct alternator for your vehicle

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   Step 3: remove wrapping and any other attached packaging

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   Step 4: store in box until ready.

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   Step 5: Park vehicle on a flat surface and wait till engine cools.

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   Step 6: Pop open hood.

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   Step 7: Using wrench and vice grips remove batter terminals

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   Step 8: first (-)ground and then (+) positive.

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   Step 9: Remove battery

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    Step 10: battery rod holders.

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    Step 11: Using a wrench

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    Step 12: pull the automatic tensioner pulley to the loose side (towards the driver side) and remove serpentine belt.

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    Step 13: Dislodge the intake coolant hose from the engine intake and restrain with zip ties to the hood rod.

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    Step 14: Using a 10mm extended socket wrench remove the nut & connection over the (+)positive connector to the alternator.

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    Step 15: Using the socket wrench remove the three bolts from the alternator cover plate.

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    Step 16: Using the socket wrench remove the final alternator fixing bolt.

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    Step 17: Carefully wiggle the old alternator and alternator cover plate out of place and adjust so the back connection wire is visible.

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    Step 18: Using your fingers

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    Step 19: you may or may not be able to pinch the wire clip and disconnect it from the alternator.

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    Step 20: Bring up old alternator carefully between the engine and fan blades.

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    Step 21: Before installing the new alternator

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    Step 22: remove the nut on the positive terminal

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    Step 23: store in pocket for later.

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    Step 24: Lower the new alternator into engine and connect the male wiring clip into female back end of alternator

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    Step 25: This likely is the most difficult step; mount the new alternator into alternator mount.

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    Step 26: Once the housing bolt is in place you should be able to swivel the alternator back and forth.

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    Step 27: Tighten all bolts that hold the alternator in place

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    Step 28: Connect (+)positive terminal to alternator and cap with nut and rubber sleeve.

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    Step 29: Reconnect coolant hose to engine.

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    Step 30: Re-install serpentine belt.

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    Step 31: Reconnect battery

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    Step 32: rod holders

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    Step 33: and battery terminals (+)positive first then (-)negative.

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    Step 34: After starting the engine return to an auto part store to have them run an alternator test to verify everything is in good order.

Detailed Guide

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