Symptoms indicates coolant is not circulating and it could be due to a bad water pump or stuck thermostat. Try removing the thermostat and running engine to see if there are any difference. At radiator cap you should be able to see the coolant circulating if the water pump is good.
With engine off, turn the fan and if there is slight resistance, the fan is good.
If it is a fan problem, the lower hose would be hot as well.
As to the gas smell, it could be the EVAP system or a leakage somewhere which requires visual inspections to locate possible faulty areas.
Tuesday, March 1st, 2011 AT 6:47 PM