To unclog a catalytic converter, get onto a highway, and drive at high speed for a couple of miles, coming to a stop and starting again several times. Repeat two or three times, giving the converter a chance to expel debris.Continue Reading
Take your car onto a highway, and drive it at the speed limit for 1 to 2 miles. Check your mirrors to make sure that a sudden deceleration is safe, and slow the car down quickly. Move over to the shoulder to complete this if necessary. Accelerate back to highway speed, repeating the process several times during the 2 miles. Estimate whether acceleration has improved; this is the best sign that you see while driving that the clog is gone.
Resume driving on the highway if the clog is still present. Check your mirrors and the surrounding lanes to make sure that driving somewhat above the speed limit is safe, and then drive up to a mile at that speed. Check your mirrors again, then slow to about half your speed and then accelerate again, going another mile.
Measure your mileage the next two or three times you fill up your car with gasoline. Consider the performance of your car during acceleration, and use these two factors to determine whether replacing the catalytic converter is necessary.
A catalytic converter operates normally between 550 and 1,600 degrees Fahrenheit with the optimal temperature being about 806 degrees. Pollutants coming through the exhaust system can raise the temperature over 2,000 degrees Fahrenheit, at which point, the catalytic converter can be severely damaged.Full Answer >
In a typical car, the catalytic converter is part of the exhaust system and under the car, between the engine and the muffler. Often manufacturers locate the catalytic converter under the passenger seat. On long trips, passengers sometimes feel the heat it produces at their feet.Full Answer >
The normal operating temperature of a catalytic converter is between 550 and 1,600 degrees Fahrenheit with the optimum temperature being about 806 degrees. High operating temperature can be a sign of extra pollutants in the exhaust system. It can also result from excess fuel going through the exhaust system.Full Answer >
A catalytic converter uses a blend of metals to absorb unburned hydrocarbons in gasoline-engine exhaust fumes and reduce pollution. Symptoms of a bad catalytic converter include exhaust noise, drivability issues and odors.Full Answer >