Vibration / rattling when accelerating ...please help

We have taken the truck to the dealer and another shop and they tell us they cannot find where the noise is coming from..It is a loud rattling / vibrating noise made when you hit the gas in drive..it stops when you go into 2nd gear...It is not the transmission ..It is definanlty coming from the engine compartment. It started out not so loud and has gradually gotten louder and its driving us crazy.. We cannot track it down..Please Please if anyone out there has had the same issue...let us know what your solution was..any and all advice welcome...

 

I s it coming from the right side of the engine bay?

 

its hard to tell, but sounds to me like its on the drivers side???

 

Have you checked the engine mounts?

 

sorry its taken so long to reply...I will ask the hubby if he has ....and if not to do so...he is the one that asked for me to post here, to get some ideas.. I will let you know what we find out....thanks for taking the time to help us with this...

 

Hubby getting you to do the dirty work while he enjoys a cold one huh?