jeep died
02-01-2010, 08:08 PM
#1
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Year: 1999.
Model: Cherokee
Engine: 4.0, I6
jeep died
ok so i have 2 questions ill tell you my situation first then ask, ok so first off last week one day my jeep died (i left my lights on) so my buddy helped me jump it he didnt know which cable went on which part of the battery and he ended up telling me the wrong sides so the cables started smoking etc. then we switched them and finally jumped my jeep. first question: could this kill my battery overall to the point i need a new one and not just re jump this one? then tonight i filled up on gas and was driving and the jeep just died i lost all steering and the battery died. while i was waiting toi be towed my lights died and my emergancy blinkers were slowely dying also. so im pretty sure its the battery. so what do you guys think it is? thanks
02-01-2010, 08:16 PM
#2
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it's probably your big bus fuse for your alternator. it's in the black fuse box under the hood. can't remember which fuse it is, but you'll find it.
it happened to my buddy, same scenario, 'cept he also fried his computer too.
it happened to my buddy, same scenario, 'cept he also fried his computer too.
02-01-2010, 08:51 PM
#3
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Year: 91
Model: Cherokee
Engine: 5.9
If not the fuse then it probobly fried the alternator itself, if it fried the computer you probobly wouldnt have started it back up.
02-01-2010, 10:02 PM
#5
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Year: 2001
Model: Cherokee
Engine: 4 liter
Can you get the battery tested at auto parts place?
Seeing as your are stuck take your battery out and take it to Autozone etc. to have it charged and tested. If it checks out then you have alternator issues. If you have a charger at the house.charge the battery overnight (or until fully charged) and you can perform a crude battery test with a multimeter (Available at Wal-Mart ,Harbor Freight etc,) and a assistant (available at People R Us.) Have the helper crank the engine while you watch the reading on the meter. If it read 10 volts the battery is good. If it goes down to 9 volts the battery is getting weak. Any thing below 9 volts ,replace the battery. If there is enough juice to start the engine your voltage reading should go up to 14 to 15 volts. This shows a working alternator. If the voltage rockets past 15 volts the regulator is fried, immediately shut off the engine. If the voltage fails to rise and starts to fall the the alternator fuse , fusible link or the alternator itself is fried. Most auto parts places will test them for you. If the alternator tests then it is the fuse or fusible link. This is a job for a day off. Good Luck.
02-01-2010, 10:13 PM
#6
CF Veteran
Do you have the cluster with voltage gauges?
If so, do you remember what it said before the jeep died?
Im thinking its alternator/battery related, check ALL your fuses, just to be safe. The ones under the hood and by the brake.
Ill see what I can find in the FSM
Heres a quote from the fsm, and a page about the alternator...
Youre gonna get a PM soon...
If so, do you remember what it said before the jeep died?
Im thinking its alternator/battery related, check ALL your fuses, just to be safe. The ones under the hood and by the brake.
Ill see what I can find in the FSM
Heres a quote from the fsm, and a page about the alternator...
Youre gonna get a PM soon...
CHARGING SYSTEM
The charging system is an integral part of the battery
and starting systems. Because all these systems
work in conjunction, diagnose and test them together.
Circuit A11 connects to the generator output terminal
and splices to fuse 2 and fuse 6 in the Power Distribution
Center (PDC). Circuit A0 connects the
battery to the PDC.
Circuit Z0 provides ground for the generator. Circuit
Z0 attaches to the right side rear of the engine.
When the ignition switch is in either the START or
RUN position, it connects circuit A1 from fuse 4 in
the PDC to circuit A21. Circuit A21 powers fuse 5 in
the fuse block. Circuit G50 from fuse 5 splices to
power the coil side of the Automatic Shut Down
(ASD) relay. The Powertrain Control Module (PCM)
provides ground for the relay on circuit K51. Circuit
K51 connects to cavity 51 of the PCM.
When the PCM grounds the ASD relay, contacts inside
the relay close and connect circuit A14 from fuse
1 in the PDC to circuit A142. Circuit A142 splices to
the generator field terminal.
The PCM has an internal voltage regulator that
controls generator output. The PCM controls the generator
field on circuit K20. Circuit K20 connects to
PCM cavity 20.
When the engine operates and there is current in
the generator field, the generator produces a B+ voltage.
The generator supplies B+ voltage to the battery
through the A11 and A0 circuits.
The charging system is an integral part of the battery
and starting systems. Because all these systems
work in conjunction, diagnose and test them together.
Circuit A11 connects to the generator output terminal
and splices to fuse 2 and fuse 6 in the Power Distribution
Center (PDC). Circuit A0 connects the
battery to the PDC.
Circuit Z0 provides ground for the generator. Circuit
Z0 attaches to the right side rear of the engine.
When the ignition switch is in either the START or
RUN position, it connects circuit A1 from fuse 4 in
the PDC to circuit A21. Circuit A21 powers fuse 5 in
the fuse block. Circuit G50 from fuse 5 splices to
power the coil side of the Automatic Shut Down
(ASD) relay. The Powertrain Control Module (PCM)
provides ground for the relay on circuit K51. Circuit
K51 connects to cavity 51 of the PCM.
When the PCM grounds the ASD relay, contacts inside
the relay close and connect circuit A14 from fuse
1 in the PDC to circuit A142. Circuit A142 splices to
the generator field terminal.
The PCM has an internal voltage regulator that
controls generator output. The PCM controls the generator
field on circuit K20. Circuit K20 connects to
PCM cavity 20.
When the engine operates and there is current in
the generator field, the generator produces a B+ voltage.
The generator supplies B+ voltage to the battery
through the A11 and A0 circuits.
Last edited by 89Laredo; 10-19-2012 at 02:12 AM.
02-02-2010, 08:40 AM
#7
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Year: 1999.
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Engine: 4.0, I6
thanks guys and i had it towed to my shop that does all my work on my xj said theyll get it done today said it should be a cheap and easy fix
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02-05-2010, 10:51 AM
#11
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Year: 1999.
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ok so it wasnt the battery bc the same thing happened to me yesterday on my way to school. i got it towed again and im pretty sure its the alternator? is there anything else it could be? any thoughts guys?
02-05-2010, 11:02 AM
#12
CF Veteran
Id get the alternator/charging system looked at. Maybe a fried winding in teh alternator/bad fuse/blown fusible link.
Follow that wiring diagram I posted. Check the fuses and wires.
Follow that wiring diagram I posted. Check the fuses and wires.
Last edited by 89Laredo; 02-05-2010 at 11:04 AM.
02-05-2010, 11:03 AM
#13
CF Veteran
seriously, check your fuses in your power distribution center.
or, you can remove your alternator and get it tested at your local parts store.
or, you can remove your alternator and get it tested at your local parts store.
02-05-2010, 11:05 AM
#14
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Year: 1999.
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Engine: 4.0, I6
ok thanks guys im having it looked at now so ill let you know what they find wrong with it, and ill keep you posted on if this happens again or not
02-05-2010, 01:09 PM
#15
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Year: 1999.
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Engine: 4.0, I6
ok so i called back and they said they couldnt find anythign wrong. said they ran it yesterday and the jeep ran really bad but today they test drove it and it drove fine so now idk
