Jeep Grand Cherokee Catalytic Converter
3 Simple Tips to Keep the Jeep Grand Cherokee Catalytic Converter Running in Good Condition
The catalytic converter of your Jeep Grand Cherokee does not require periodic maintenance compared to other parts of your SUV. In most cases, the only time you'll handle this component is when it's broken and needs replacement. However, there are several ways you can do to keep the Jeep Grand Cherokee catalytic converter running in top condition.
- Do not let the engine overheat.
Running the engine to the point of overheating will do more than just damage it and the radiator. An overheated engine leads to extremely hot exhaust gas that, once reaches the catalytic converter, can melt the ceramic catalyst substrate and its matting, rendering the converter inoperable and potentially blocking the exhaust from leaving the system. Once the temperature gauge in your Jeep starts to hit the high notes, let the engine cool down immediately, and have the engine, radiator, and the catalytic converter checked by a professional mechanic.
- Keep the silicone-based sealant or lubricants away from the catalytic converter.
Typically used to seal the exhaust manifolds and headers, silicone sealant or lubricant will vaporize into a gaseous form when exposed to high temperature. And once this silicone gas reaches the catalytic converter, it can contaminate the oxygen sensor, causing incorrect readings that can lead to dirtier emissions, decreased fuel efficiency, and higher operating temperatures. As a rule of thumb, do not apply silicone sealant, silicone-based grease or similar products on or near the exhaust side of the engine. Before you apply anything on the exhaust components, make sure to double check the label first.
- Change the engine oil periodically.
Many car owners make the mistake of letting the engine oil cook to a crisp, but once it goes bad it can cause additional wear to the engine valves and piston rings. And once this happens, the oil will mix with the exhaust gas and damage the catalyst upon reaching the converter. A common sign of engine oil contamination is thick, bluish smoke from the exhaust, so once you notice this happening in your Grand Cherokee, have it inspected by a mechanic. In most cases, the engine will go through a compression or "leakdown" test to confirm if engine oil is seeping through the combustion chamber.