I'm looking for some advice. My son has a 2008 Dodge Ram 4.7. It is dying on him at red lights and while idling in park. It's not everyday and sometimes it's two or three times a day. It always starts right back up.I have installed a new throttle body which is supposed to have the throttle positioning sensor inside of it. That did not help. The truck did set it parked for several years before he bought it.. it does idle well while it is idling until it dies.

 

How old is the gas in it?

 

IAC and TPS (MOPAR)... you say you've replaced the tps but if it's not Mopar you might want to try again. Also bad spark plugs and or a coil pack, but the latter would probably result in a misfire code.

 

New gas.... he's been driving it now for probably three months

 

Yes I replaced the TPS it is actually part of the throttle body so I installed a new throttle body... it was not a Mopar part.