Hello I have a 2000 Dodge durango slt 4.7. Everytime I start it up I have to keep my foot on the gas to keep it going. I tried replacing the TPS but im still having the same problem. New battery and alternator where installed 4 months ago. Any Ideas?

 

IAC and/or dirty throttle body.

 

Thank you that's where I was going next. I thought maybe fuel filter to?
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Would not be a bad idea to go through a complete tune up. IAC will more than likely result in stalling at idle as opposed to the TPS which is used more for transmission shifting.

 

Thank you for that info. That is something I did not know. It's at the shop now being diagnosed

 

I'd try giving the battery connections a good cleaning with a wire brush before spending money on anything else here. Not being able to stay running is a classic sign of a weak battery or bad battery connections.