2000 Dodge Durango TRUCK TURNS OFF

I have a 2003 Durango with V8 4WD Auto with about 76,000 miles, and this week it just started doing the same thing as cbp describes. My normal idle is at 750 rpm, when it first starts is falls below 500 rpm's and stalls. After a few tries it's fine. But like he says, after it sits over night or for 8 hours or so, it acts up.

I also just had a major tune up and complete service on the truck, so I am very curious.

I have a 2000 Dodge Durango SLT, 5.9 liter automatic, 178,000 miles. A few months ago, the DooRag started stalling after I would start it. I had to keep my foot on the gas for a couple of minutes while it warmed up. The Durango would also stall while driving if it didn't fail on startup. At turn-on, the tachometer read 400RPM before stalling. I've read quite a few posts about this failure and wanted to add my solution that's worked at least for the last month.

My scan tool did not reveal any codes for troubleshooting. So I started by replacing the distributor cap, spark plugs and wires... No luck.

Then I took voltage readings for the throttle position sensor (TPS). With engine off & ignition on, the voltage should read 0.2 to 1.4 volts at idle; and at WOT"” the voltage should read about 4.5 volts. I checked and my readings were 0.1V at idle, and 4.3V at WOT. I also checked the Idle Air Control (IAC) Motor for deposits, and it was dirty as hell.

In the end, I replaced the TPS and the IAC at the same time (approx. $100 from Schuck's/Kragen/O'Reilly Auto Parts). The DooRag is running fine, and does not have any symptoms from the past. Hope this helps save you all some $$$!