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 $$$!
Monday, March 9th, 2009 AT 9:53 PM