How to Replace the Alternator in an Acura Integra


The Acura Integra has an alternator that sends electrical current to various devices in the vehicle while the engine is running. Most alternators include a voltage regulator that ensures the voltage level remains constant. You may need to replace the alternator if your battery keeps running down, or your headlights become dimmer while driving.

Things You'll Need

  • New alternator
  • Socket wrench set
  • Torque wrench
  • Determine that the new alternator is compatible with your Integra engine. Models built from 1985 to 1988 have a 1.6 L engine, 1989 to 1993 models may have a 1.7 or 1.8 L engine and models manufactured after 1993 will have a 1.8 L engine.

  • Disconnect both battery cables with a socket wrench. Remove the four-prong connector and black wire located in the back of the alternator.

  • Remove the adjusting bolt and mounting bolts from the alternator with a socket wrench. Remove the eight locking nuts and bolts with a socket wrench so that you can disconnect the alternator belt. This will allow you to remove the alternator assembly.

  • Install the new alternator assembly and tighten the mounting bolts to 33 ft. lbs. with a torque wrench. Install the alternator belt and adjust it to the proper tension before you torque the locking nuts and bolts to 16 ft. lbs. Connect the four-prong connector and both battery cables.

  • Reset the Powertrain Control Module idle memory. Start the engine and maintain 3,000 revolutions per minute until the cooling fan starts running. Let the engine idle normally in neutral for about five minutes with all of the electrical accessories off.

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