1994 Dodge 3500 12v 115,000 miles
When driving this truck the throttle will stick if you put the clutch in it will race or die. this only happens after it is really warmed up, 15-20 miles of driving. already replaced fuel lines and lift pump. When the truck starts racing or dying you can hear loud clicking coming from the motor. Some times you can floor it and the clicking will stop and the power will return, as soon as you let off it will rev and click again. I have run out of ideas. anyone have an idea?