Question about 1988 Mitsubishi Pickup

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Eating alternators mitsubishi shogun 1994 2.5td gls

Fitted 2nd hand alt lasted two weeks before flat battery.fitted brand new alt lasted two weeks.turn on ignition start engine 14volts at batt for about 1 minute then alt drops out comes back online for about 5 mins then drops out -this is all at tick over.original alt removed because of cracked mounting bolt lug.the two alts after this had different plug for exciter wires - ign switch/12v supply from batt - but no indication on alt as to which wire goes on which connecter.L/S?can you blow regulator if wires wrong way.havent checked out relay in engine bay fuse box 60/100 blow fuse for heavy red from alt to batt ok.batt indicator light comes on at turn of ignition key but upon start doesnt come on or remain on thereafter. any ideas or things to check?

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  • Contributor
  • 31 Answers

Is your a 12v or 24v some imports are 24v and engine parts are different thanks brian

Posted on Aug 22, 2009

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Posted on Jan 02, 2017

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SOURCE: I have a mitsubishi shogun 2.8 GLS, three lights

the alternator is maybe defective. the fuel filter is clogged. fill up oil to recommended level.

Posted on Sep 27, 2009

BCAS1298
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SOURCE: I have a 94 merc

Need to check voltage at back of alternator, should have no less then13 volt's, if you do alternator is good, this is just a self test for you, with engine off, with test light check for voltage at back of alternator, test light should light up, if it don't look for blown fuse link at starter solenoid on fire wall. most of the time a fuse llink will have a tab on the wire, pull genly on wire, if it feels rubber like, bad fuse link,

Posted on Aug 17, 2010

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98 chevy malibu my alt isnt charging new alt batt test good cut out the fuselink on starter the alt wire runs thru firewall If i run a wire straight to the batt it is putting out 19v any suggestions


Did you check the fuse in the under hood fuse box ? GEN / BATT fuse 10amp . Is your check engine light on ? This is a computer controlled charging system , it should have four wires connected to the alternator . 1 - the heavier wire on the back ,this comes fro the starter - the one with fusible link , you could have checked for battery voltage with voltmeter ! The three other wires in the connector are the orange one ,this comes from the GEN / BATT fuse an should have battery voltage ! The last two come from the PCM - engine computer . The gray wire is the turn on signal from the PCM an the Red wire is the control from PCM ! Charging System Wiring Diagram MOTOR Magazine Article MOTOR Information Systems

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was not on before the new alt,? is alt new or used.?
or came on only after the new ALT?????????
my guess, is 2 failures.! (one ignored and 2nd grew)
on with engine running, guess yes.
Good question and is same answer on all cars.
1: engine rpm too low, what is yours (below 80 rpm)
2: fan belt slips. bad tension pulley (weak and old???)
3: Alt bad, or its wires bad.
4: brake level low, (@MC) or hand brake switch stuck on, or other brake failures. a plenty, scan the PCM and ABS if you have ABS.
id not drive it with the brake lamp on (Savvy?)
the battery light is really the ALT charge lamp.
it glows anytime the Charge system can not charge the battery
if you drive far like that, the engine will stall and not crank.

5: the horn fuse power the alternator, so check the horn fuse
10amp , key on, 12vdc on both sides of fuse is needed/
fyi: the meter fuse runs the charge lamp, if said lamp is dead bingo.
6: fact 2, the PCM does NOT run the Alternator on the 3.2L .
7: alternator case not grounded right.
8: battery is bad, causing alternator to drop off line
9: battery cables bad, at the 4ends or they are bad.
10: the plug on the rear of alt is bad or its wires or pins rusty.


brakes:
the brake lamp has 3 inputs ("OR" logic) master cylinder level low.
the hand brake lever and the EBCM (electronic brake control module)
a technician unplugs each to see what causes the error.
if you unplug mC wire and hand brake wire
then the EBCM is UNHAPPY, scan it.

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Wouldn't be a fuse, but it seems as if the alternator is still not putting out normal power, or else your battery has a problem taking a charge. Better have the battery tested for a dead cell. also see what a voltmeter says about alternator output now. If you have an electrical problem in the wiring somewhere or in the alt. charging controls, then possibly one or more of the diodes in the alternator may got burnt out. That means the alternator puts out less power.
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