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I have a 03 jeep wrangler X that I have been restoring for a yr. now I had drove it briefly , turned off the engine. I returned a few minutes later, the jeep was completely dead. I would turn the ignition switch and no power anywhere . No dash lights , no headlight , my Gage's would go haywire then stop. The only way it would start would be by jump starting it. It would then run rough. I took my battery out had it check . It was at 100% condition . When I reconnected it , the jeep started up and continued to run without rough idle or dying. My question is what caused this to happen ? Is there a relay that would cause that ? I think that when I took the battery posts off it reset the computer !

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I think what you will find is that at some point in time someone replaced the ends of your battery cables with the little terminals that use screw clamps to tighten the cable ends to the wires and you have a loose or corroded connection there and not where you tighten the cables to the battery post you wiggled it when you removed the battery and now has a good enough connection to start it tighten them even if they appear tight and clean them if the appear white or green or black

Posted on Dec 05, 2012

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Posted on Jan 02, 2017

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SOURCE: 04 jeep grand cherokee, acts like dead battery, starts after

Sounds like ignition switch problem.

Posted on Feb 11, 2009

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SOURCE: 1996 Subaru Legacy No Power At All

Last night I checked the battery and it was still good. I disconnected and then reconn ected both terminals and that brought the power back. When I turned the key the power went out again. I repeated the procedure but did not turn the key. Instead, I took off the knee bolster and tried to wiggle the wires under the dash to see if I could find the source since it seems to be related to the ignition. Nothing cut the power so I started it up and it worked fine except for the check engine light which was flashing that says I have a misfire condition. I drove the car 25 miles to work this morning and will be taking it to the dealer for a better inspection.

Posted on Aug 22, 2008

inhisname
  • 76 Answers

SOURCE: Can a weak battery cause a BMW to misfire?

hello, if the vehicle ran with cable off one would ASUME alternator is ok! however, i bad diode in the aletnator would allow it to charge yet have a massive voltage draw as well, almost all of todays parts stores will do a free starting and charging test for you! ......ps a large voltage drop would rob your ignition of voltage causing your miss!.good luck, marty

Posted on Jun 07, 2009

  • 1348 Answers

SOURCE: Engine won't start. Dash lights flash rapidly when key turned.

the battery says 12 volts but may be dropping to 4 or 5 under a load...i would suggest jumpstarting the car and see what happens.the battery should read in the high 12 volts and not less than 9.5 under cranking. the dash lights go out on your car when starting,and the alarm will go off ,and disable the ignition if the voltage is too low in cranking the car because the computer will shut it down and activate the anti theft.....check your battery posts are tight. best of luck

Posted on Jul 22, 2009

ourhowse
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SOURCE: 2002 Galant doesn't stay running at idle.

Change idle control sensor.

Posted on Aug 19, 2009

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