Jeep wont idle after battery went dead. - Page 2 - JeepForum.com

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post #16 of 34 Old 04-30-2012, 11:42 AM
billzcat1
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Add me to the list of "WJ won't idle after dead battery" - had to keep my foot down to keep it alive, eventually it stabilized, then I went and drove for an hour.

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post #17 of 34 Old 04-30-2012, 02:41 PM
cuttysark
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battery..

also, make sure your terminals and posts are cleaned 200%...
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post #18 of 34 Old 01-01-2013, 11:12 AM
MiCrOz
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Bumping this because I've been having the same problem for a while now. New battery, new terminals, new TPS, still won't idle after battery dies, forcing me to gas+brake to keep it from dying, until the computer adjusts. I'm trying to find the underlying problem that is causing the stall so that I don't need to wait until the computer tunes the problem out. Any suggestions?

2000 WJ 4.7 (work in progress)
Offroad: 6.5" IRO long arm high clearance, Bilstein 5125 - 35x12.5 KM2's - 242 swap - 4.56 w/ stock Varilok
Onroad: Spyder Full LED tails, Projector Heads w/ DDM 6k slim HID, Addco rear sway
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post #19 of 34 Old 01-01-2013, 01:13 PM
filipm
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Same thing actually happened to me for the first time yesterday as well. Ordered a new IAC and going to pick a new battery, interstate, tomorrow. Hopefully that'll take care of things.

Fil
02 WJ - V8, 242
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post #20 of 34 Old 01-13-2013, 08:56 AM Thread Starter
rkperry1
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Mine auctually fixed its self after driving for about an hour or so on the highway

2001 Grand Cherokee 4.0 Inline. 4 inch Lift with Bilsteins, 245/75/16 BFG ATs. Westin bull bar, Halos, 12" JL Audio W7
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post #21 of 34 Old 01-13-2013, 09:10 AM
soulsurvives
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Quote:
Originally Posted by MiCrOz View Post
Bumping this because I've been having the same problem for a while now. New battery, new terminals, new TPS, still won't idle after battery dies, forcing me to gas+brake to keep it from dying, until the computer adjusts. I'm trying to find the underlying problem that is causing the stall so that I don't need to wait until the computer tunes the problem out. Any suggestions?
the way you write this is like the battery is going dead often.....perhaps you need to find out why the battery keeps going dead....maybe that will help....maybe a little more expplanation will help.....
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post #22 of 34 Old 08-07-2013, 10:54 PM
allyn_cj
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Quote:
Originally Posted by MiCrOz View Post
Bumping this because I've been having the same problem for a while now. New battery, new terminals, new TPS, still won't idle after battery dies, forcing me to gas+brake to keep it from dying, until the computer adjusts. I'm trying to find the underlying problem that is causing the stall so that I don't need to wait until the computer tunes the problem out. Any suggestions?
Go to your dealership and see about a PCM reflash (or check to see if your PVC valve is drawing in your oil thing that will cause some unequal pressure in the intake causing lack of o2 in the chamber you can do this while the jeep is idleing and open your oil fill cap and put your finger over the little hole halfway down closest to the battery inside the filler and if it sucks your finger right to it your good if its little get a new one its like 15 bucks) i had some problems with my 00 wj and that solved them rough idle low idle and stalling at stop lights etc...
and wjs do run poor with a bad battery that fuel pump on these things draws ALOT of juice and if its to low the computer will enter "limp mode" low fuel pressure and power conservation etc...
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post #23 of 34 Old 08-07-2013, 11:43 PM
new2site
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Do you guys realize that you were just helping the governor of Texas and 2012 Presidential candidate Rick Perry ?!?
Apparently not. I guess the Michigan address is his summer home.

That's cool to know he drives a WJ.






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post #24 of 34 Old 12-22-2013, 08:29 PM
kmanster
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fantastic recommendation. have a 2003 wrangler with dead battery. followed your advice and Bam it idles. Thanks.
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post #25 of 34 Old 12-22-2013, 08:31 PM
kmanster
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Quote:
Originally Posted by the88thpianoman View Post
This IS your problem/solution:

When the battery died, your computer reset. When you jumped it, it wouldn't start right away, so you pressed the gas pedal to coax it to start. In doing so, the computer learned the incorrect throttle position for idle. To fix this, disconnect the battery for at least a half hour to reset the computer again. When you start the Jeep back up, turn it to the on position, but not start, to prime the fuel system. After sitting in the on position for three seconds, turn the key over to start and it will fire right up, and DO NOT touch the gas pedal. Let it idle for a few seconds before doing anything, and the computer will learn the correct idle parameters.
Fantastic recommendation. Fixed computer after dead battery. Thanks.
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post #26 of 34 Old 12-22-2013, 09:27 PM
poisoness
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dead battery

Quote:
Originally Posted by rkperry1 View Post
Was putting on my long arms today and left my doors open and my battery died. went to go jump the car and it didnt want to start and stay started. finally got it stated by having the pedal down. after it would contatnly stall. would have to feather the pedal to keep it alive. got to to stay around 450 rpm idle in park which is really low??? what would cause this after a dead battery?

Something in engine bay is ticking or hissing possiblly? IAC??
drive the car for 20 miles so computer relearns idle.
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post #27 of 34 Old 12-22-2013, 09:30 PM
poisoness
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dead battery

Quote:
Originally Posted by MiCrOz View Post
Bumping this because I've been having the same problem for a while now. New battery, new terminals, new TPS, still won't idle after battery dies, forcing me to gas+brake to keep it from dying, until the computer adjusts. I'm trying to find the underlying problem that is causing the stall so that I don't need to wait until the computer tunes the problem out. Any suggestions?
find the short that is draining your battery.
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post #28 of 34 Old 06-09-2014, 05:24 AM
RussT1
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Quote:
Originally Posted by the88thpianoman View Post
This IS your problem/solution:

When the battery died, your computer reset. When you jumped it, it wouldn't start right away, so you pressed the gas pedal to coax it to start. In doing so, the computer learned the incorrect throttle position for idle. To fix this, disconnect the battery for at least a half hour to reset the computer again. When you start the Jeep back up, turn it to the on position, but not start, to prime the fuel system. After sitting in the on position for three seconds, turn the key over to start and it will fire right up, and DO NOT touch the gas pedal. Let it idle for a few seconds before doing anything, and the computer will learn the correct idle parameters.

I had the same issue, This worked perfectly. Thank you!! Love these forums.
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post #29 of 34 Old 06-24-2015, 09:00 AM
Ku11a
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This worked perfectly!

Quote:
Originally Posted by the88thpianoman View Post
This IS your problem/solution:

When the battery died, your computer reset. When you jumped it, it wouldn't start right away, so you pressed the gas pedal to coax it to start. In doing so, the computer learned the incorrect throttle position for idle. To fix this, disconnect the battery for at least a half hour to reset the computer again. When you start the Jeep back up, turn it to the on position, but not start, to prime the fuel system. After sitting in the on position for three seconds, turn the key over to start and it will fire right up, and DO NOT touch the gas pedal. Let it idle for a few seconds before doing anything, and the computer will learn the correct idle parameters.
Cherokee would not idle after I ran the battery down, unsuccessful jump start, then put battery on charger over night. I followed the instructions above and it started right up and idled perfectly.

Many thanks to the poster....
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post #30 of 34 Old 01-06-2016, 03:17 PM
WJCO
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I too just went through this prior to seeing this forum. Hopefully it will help others. Basically brand new battery was dead due to hood light staying on (light fell off of mounting clip and was stuck on). Used jump box, cranked jeep, started fine, but died. Did this over and over again. Even after keeping foot on the gas for about 30 seconds, same thing. So eventually, I just kept my foot on the gas for about 2 minutes at 2000rpm. After that it idled fine. I went on about a 15 minute test drive and it is fine now.

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