Over the past couple weeks this has happen 3 or 4 times....only in drive thru's! My truck dies as i move up in line....ill be idling in drive and then give it a tiny touch of gas to move up and as the rpms come back down they fall so low the truck stalls out and dies....i have checked for leaks in the intake....could it be an alternator issue? It always starts right back up so im thinking its not the alternator but not sure. Any thoughts?
Thanks
Steve

 

Check that battery connection.

 

I read something similar to this on the hptuners forum. They said it was due to the converter and the fix was to adjust some of the idle timing tables.

Have you had your tune adjusted since your put in the converter?

 

ya wheatley adjusted it....but at the time i wasn't having any issues with it but i only had the converter in for a cpl days.

 

I have the same problem after my converter install too. It was a performabuilt 9.5 3000.

 

my 99 z71 would that sometimes after id rev it up over 4k and rpm's would come back down it would stoop lower then 500rpm's then slowly get back to normal idle.....sometimes it would die but after i popped the hood adjusted the battery cable(wiggled it) and had my gf start it would start up fine and idle right....id check that if you havent already

 

wow....makes since. I put the exact same setup in my truck 3 wks ago....performabuilt lv2/300 9.5 billet converter

 

I have a similar problem mine will idle just fine then i will let off the brake and roll a little and the rpms drop untill it just barely runs if im rolling and as soon as i stop it idles normal again stock everything

 

mail me the other PCM and I will take a look at it for you and mail it back out

 

lol ok.....its truely not that big of a deal...we can take care of it next time i mod the truck and need an update....i was just curious what it could be. PCM will be in the mail tomorrow morning.