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Old 07-17-2012, 06:50 AM   #1
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99 dodge 1500 won't idle


changed starter in truck....everything was fine for a day...battery went dead son said he left overhead lite on...jumped truck started ok leave off gas dies...start it up rev engine everything seems ok leave off gas dies...any help


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Old 07-17-2012, 09:55 AM   #2
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99 dodge 1500 won't idle


I had an old Camaro where, after you disconnected the battery or it died, you'd have to drive it around for a few minutes above 35mph to get the computer to reset. It wouldn't idle at all before it did that.

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Old 07-17-2012, 11:52 AM   #3
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99 dodge 1500 won't idle


My first thought would be a vacuum leak. Obviously start with the areas where you were working, to see if you may have inadvertently dislodged a line or something, but, otherwise, and although coincidental if that were the case, intake manifold leaks are not all that uncommon.
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Old 07-17-2012, 06:30 PM   #4
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99 dodge 1500 won't idle


up date....took battery to advanced auto to have checked...they said it was to low needed charged.....they charged it and said battery was good....reinstalled in truck...everything is working fine
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Old 07-17-2012, 06:33 PM   #5
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99 dodge 1500 won't idle


Good--computer would have reset after battery had recharged----If you have further trouble--see my PM---
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Old 07-18-2012, 09:38 AM   #6
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99 dodge 1500 won't idle


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Originally Posted by ben's plumbing View Post
changed starter in truck....everything was fine for a day...battery went dead son said he left overhead lite on...jumped truck started ok leave off gas dies...start it up rev engine everything seems ok leave off gas dies...any help
At idle, most alternators are only supply just enough to keep the battery topped off and electrical powered.

Not uncommon for the ignition to draw from the battery at idle.
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Old 07-18-2012, 09:59 PM   #7
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99 dodge 1500 won't idle


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changed starter in truck....everything was fine for a day...battery went dead son said he left overhead lite on...jumped truck started ok leave off gas dies...start it up rev engine everything seems ok leave off gas dies...any help
The ECM needs to readjust itself. You should be fine, given several more frustrating days of it dying at idle.
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Old 07-20-2012, 09:19 AM   #8
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99 dodge 1500 won't idle


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The ECM needs to readjust itself. You should be fine, given several more frustrating days of it dying at idle.
That computer reacts to that significantly more quickly than that. Worst case the vehicle wouldn't shift as timely as the driver expects and might lack a little power.

I agree that it's most likely that the ignition wasn't getting enough power at idle to keep the truck running.

It could also be a sign of a weak alternator, so bear that in mind.
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Old 07-20-2012, 09:23 AM   #9
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99 dodge 1500 won't idle


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That computer reacts to that significantly more quickly than that. Worst case the vehicle wouldn't shift as timely as the driver expects and might lack a little power.

I agree that it's most likely that the ignition wasn't getting enough power at idle to keep the truck running.

It could also be a sign of a weak alternator, so bear that in mind.
Right. It certainly SHOULDN'T take it anywhere near that long to adjust.
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Old 07-24-2012, 08:01 PM   #10
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99 dodge 1500 won't idle


My 97 used to do the same thing when the batt voltage dropped. The ECM loses part of the code And the truck will run poorly. Disconnect the batt for at least 15 mins to allow all capacitors to discharge. Reconnect and jump to start or start with a new batt if needed. Then you gotta for a ride so that the ECM re-learn all engine parameters. Good luck.

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