Sounds like your piston or rod. Please see a mechanic for a diagnosis and what it will cost before having the work done.
There is no way for me to know what is knocking in your Dodge Ram.There is no way for me to know what is knocking in your Dodge Ram.
Where is the noise coming from? If its from the fenders or wheels is a much different problem than if its coming from the transaxle.
engine knocking hard,and shaking a bit
check your oil for starters....
rack and pinion
Idle speeds can vary from 500 to 1200 rpm
If your truck is 2wd than check the bearing, hub assembly. This is considering that you have the balance and alignment checked at a shop already
They can reach top speeds of 170 MPH.
Worn Ball Joint
Is this coming from the engine? If it is it sounds like you might have some lifter problems. Or the worse part is if you have a rod knocking. Intrepids did have some egine problems.
Bad gas. Loose / worn lifters.
The automatic has 4, the manual has 5