Question about 2002 Jeep Liberty

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My jeep libertys check engine light will come on and shortly after the battery light comes on. about 20 minutes of driving the engine will stall and the jeep will need a boost??

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  • Samuel Charles Spriggs Mar 17, 2011

    This is likely a problem with the charging system. A faulty alternator is the probable cause. Do you have a multimeter for checking the battery terminal voltage when the engine is running ?

    Charlie

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  • Jeep Master
  • 2,050 Answers

Sounds like your alternator is not charging your battery. Get it tested, you will destroy a battery if you don't get it fixed. (I think this is also your other problem's.)

Posted on Mar 17, 2011

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all stalls end in CEL check engine light on. that is normal
but CEL glow. when engine running , means you had a failure, and it stored DTC error codes, so scan it.
lots of causes. huge list.
get a tune up , tops list.

SCAN it to be sure all sensors work. running.
all fuses in car good.
by stalls , i assume the engine stalls and engine RPM is 0 RPM.
the stall cause the whole dash to light up, all the warning lamps come
on (self test) oil , charge , CEL. come on.
what is important is the stall and the cause.

i will tell you the 3 ways.
lost electrical power to engine EFI system (seems not)
bad engine, (lost compression hot)?
bad spark , spark died.?
bad fueling, lost all fueling (starves and stalls or floods and misfires horribly and stalls (black spark plug tips are big time clue)

if non eof the rings a bell.?
get the car serviced.

this car is newer nicer car, you (we) can scan and drive and log data.
allowing faster easy diagnosis.

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