I have a weird rattle I can hear in the dash. It sounds like it is coming from below the HVAC controls. If I accelerate from low throttle into a load, like up a slight incline, I get a rattle noise going into and coming out of the throttle. I can do it at will be working the throttle in and out.

I was wondering if the AC needs to be charged? Anyone had a similar experience and know what causes it?

Thanks people

 

Is it possible the fuel lines are touching the firewall under light load, transmitting the noise?

 

I had an engine installed not long ago so I will look and see if that is a possibility. They are touching the mat against the firewall and one line is touching the other where they turn down. I will have to get underneath to see how they are fastened before I try to re-align them. I hope it is the cure.

Thanks