I have a 2000 Durango with a 4.7L motor. My fuel pump went out and sat for a couple weeks until I got the part. Now its replaced but it takes a little bit to get started. Sometimes I have to step on the accelerator to get it fired up. And if I dont let it warm up it will die when I shift into gear and try to drive away. Any ideas on what it could be??

 

Bad gas if it's been sitting.

 

I put fresh premium gas in after we swapped the pump though

 

2 weeks wouldnt cause gas to go bad in most cases, hell it should last a couple months before it shows any signs of poor running (at least IME)

check the TB and see if its dirty, if it is clean it, and take the IAC motor out and clean it off real good (this meters the idle airflow when cold the engine is more sensitive), maybe replace it if its really bad.

if that doesnt do it you could have a weak battery which causes all sorts of weird/odd problems.