Nissan Technical Advisor 3/22/2011Is the check engine light present in the dashboard? If yes get it scanned to retrieve the stored trouble codes and post them here. Possible causes of this is bad ignition coil/s, defective engine coolant sensor, or a defective knock sensor. Verify those trouble with a diagnostic tool.
bigF250 3/23/2011could also be a stopped up cat
thrasher 3/23/2011you might want to check your coolant and your thermostat. either could be bad