I have a 2004 durango with roughly 60k miles and the 4.7l engine. I'v noticed for a while on cold starts I hear a noticable knocking noise, it lasts for about 2 minutes and fades away. I can't really tell where it's coming from in the engine compartment. When I listen down by the passenger side wheel I can hear it really well. It runs perfect, no lack of power and it's done it for as long as I'v had the vehicle. The durango's had the timing chain changed twiced under warranty but I don't think this is the problem. Also mechanics said it'd not the lifters. It again, is only noticable when the engine's cold. Thought I'd make a post and see if anybody had any ideas about it. Thanks

 

I have an 05 SLT Adventurer with the 4.7 and I have the same noise on cold starts. Although mine only lasts for 15-20 seconds. I would love to know what it is.

Todd