Help! My 2000 Durango 5.9L will not Idle!

Have problem with 2000 Durango 5.9L. Starts, but unless I keep gas pedal depressed, engine stops. I just replaced the battery because the last one was dead and 5 years old. I have talked to everybody that I can think of that knows anything about a car but no luck.

Idle air control valve dirty or bad.

Throttle position sensor defective.

Have problem with 2000 Durango 5.9L. Starts, but unless I keep gas pedal depressed, engine stops. I just replaced the battery because the last one was dead and 5 years old. I have talked to everybody that I can think of that knows anything about a car but no luck.

Do you have auto start?? If you do it could be that.. check the wires and make sure all door pins are closed/down.

I had a similar problem and thought that the 'hard start' was due to several start attempts by my wife without keeping the car running. I replaced the Idle Air Control (IAC) motor and jumped the car. I drove it around awhile to charge the battery and all seemed well. A few hours later it started hard and still wouldn't idle. I got it started, took it down to have the battery tested. Turns out the battery was bad. Works great after a new battery. Anyone know why a bad battery exhibits these symptoms?