I have a 2002 Mitsubishi Diamante, the battery is brand new and the alternator has tested good. The car will start up and drive, eventualy the battery light comes on as well as all the other lights and then the car dies. What could cause this?

SOURCE: Mitsubishi Diamante 1995

Alldata diy is the way to go.  However, I can tell you.  Remove the intake plenum stay. then the roll stopper bar.  Unbolt alternator and then fish it thru to the passenger side.  ( you may need to remove some hoses, etc.  It WILL work,  I just did mine.  Chiltons says remove from under car, No way.  It must go thru to the passenger side.

SOURCE: what is the easiest way

2002 diamante heater core sits in center of the dashboard just over the on board computer for the car. To access it you need to take out the console between the seats and the entire dashboard to get to it. The only thing wrong with the heater core is the leaking gaskets (about $10 in parts). Mitsubishi knows about the problem and when the dash is taken apart you will see a plastic sheet over the onboard computer to somewhat protect it from the leaking heater core gaskets. So the expense in the repair is in the labor to get it all apart and back together again. The dealers seem to replace entire heater core when they fix this problem. I did just the gaskets and that solved the problem. I have read others who did it themselves only replaced the gaskets and that solved it for them as well. Maybe the dealers think you will feel better replacing a larger part for so much labor.

SOURCE: bad alternator

the alt is on your fan belt but not sure if it's top or bottom of your engine if it's the top then you might be able to loosen your belt tensioner remove the belt and unbolt the alt, mark all wires both on car and old alt, it really helps when refitting the new 1. then reversing the process to fit the new alt. if it's bottom of your engine then you might need to lift the engine, a lot of work.

SOURCE: alternator removel on a 95 mitsubishi diamante

3.0 SOHC. TURN OFF RADIO. THEN DISCONNECT BATTERY NEGATIVE CABLE.REMOVE AIR CLEANER ASSEMBLY.LOOSEN THE TENSIONER PULLEY.REMOVE ALTERNATOR DRIVE BELT .REMOVE ACCELERATOR CABLE.REMOVE.BRAKE BOOSTER VACUUM HOSE.REMOVE EGR VALVE.REMOVE ALTERNATOR ELECTRICAL CONNECTORS. THEN REMOVE MOUNTING BOLTS THEN REMOVE ALTERNATOR. THE 3.0 DOHC DISCONNECT NEGATIVE BATTERY CABLE.REMOVE SURGE TANK.REMOVE AIR DELIVERY HOSES TO GAIN ACCESS TO THE ALTERNATOR .IF YOU HAVE AIR CONDITIONER .REMOVE THE CLAMP .RAISE THE SUCTION HOSE.USE SOMETHING TO HOLD IT OUT OF THE WAY.LOOSEN TENSIONER PULLEY .AND REMOVE THE ALTERNATOR DRIVE BELT .DISCONNECT THE OXYGEN SENSOR CONNECTOR .DISCONNECT THE ALTERNATOR ELECTRICAL CONNECTORS.REMOVE ALTERNATOR BRACKETS AND MOUNTING BOLTS .REMOVE THE BRACKET AND ALTERNATOR AS A ASSEMBLY.SEPARATE THEM ON A WORK TABLE.

SOURCE: fREE MITSUBISHI DIAMANTE 2002 pdf service manual

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