Weird Idle?

[PCA4208]

Driving home today, stopped at a red light, idle came down to 400 then back to 500. It's been like that for a while now, but its never dropped past 500. Any clues as to what could cause a drop in idle? The only plus side is that it did sound pretty awesome like I had an aftermarket cam haha.

 

[Hemi450hp]

The low idle issue was common on the 03's...There is even a dealer TSB for this. How long has it been since you replaced your spark plugs and wires?

 

[colbyj1986]

Check battery. They don't Luke dying batteries

Sent from my SGH-I747 using Tapatalk 2

 

[PCA4208]

I have a brand new duralast gold battery I just got in like February. I replaced plugs at 78,000 miles. I haven't done wires though.

 

[colbyj1986]

Still a good idea to check it out. Just because it is semi new doesnt mean something could be bad. Have u ran any fuel cleaner and clean gas.

Sent from my SGH-I747 using Tapatalk 2

 

[Hemi450hp]

If you just replaced the plugs 2k miles ago, double check that they are tight and that all coil pack plugs and wires are tight as well.

This was a common issue on the 03s though, so it might be worth checking to see if you have the flash to help get rid of that.

 

[PCA4208]

I'll check it tomorrow. But I try to stay away from fuel additives. I think I once put a thing of gumout when I first got the truck, gas I get is ethanol free.(most of the time)

 

[colbyj1986]

In understand about the additives. And I Was having b this problem as few Ewell's back. I had a bad ground and battery was at 10v

Sent from my SGH-I747 using Tapatalk 2

 

[KGBIGCOUNTRY]

TB being junky can do it also

 

[PCA4208]

I'm going to be doing the big 3 to my charging system soon, so maybe that'll help things too.

 

[NHDuckHunter8003]

Could be the TB. It might be gummed up and causing the problem and I would clean it anyway, its an easy job and good to do.

 

[PCA4208]

Ya I'll check it all today, and clean my TB. Right now it's chilling here at 600 parked.