One problem related to engine grinding noise has been reported for the 1999 Jeep Grand Cherokee. The most recently reported issues are listed below.
The bulk of the problems the car has were recognized before 583 miles. The engine stalls when driving in stop and go traffic. The problem seems to be magnified if the car goes from high speeds to an idle . The car begins to idle below 500rpm and then dies. After being in to reprogram several times, now the vehicle is hard to start, it takes from 5-10 seconds to start. The car has transfer case problems that make the car shudder at low speeds when turning. Trying to fix that issue created a leak from the transfer case. The car also has a hollow grinding noise or resonance at 1200rpm in 1st gear while under a load. The car has been serviced six times. These issues still remain.