bigmike17

Another thing to check is the heat shield welds underneath the Jeep, right before the front wheels, and right in from of the gas tank skid plate area. The welds closest to the passenger side seem to break over time. When you start the vehicle they can vibrate and sound like a grinding sound. Either tack them back on if you have the capability or, take a screwdriver and bend the heat shield up a little so that it will not vibrate. I just fixed this issue on mine thanks to another thread on the forum pointing out to check this.