The most common symptom of a catalyst failure is a system error that activates the engine trouble icon on a dashboard. If this symptom appears, you need to immediately read the error code with a diagnostic scanner and fix the problem. If car “brains” detects incorrect readings on oxygen sensors,
they immediately notify the driver of this, and at the same time put the engine control system into emergency mode. This is often accompanied by a deterioration in dynamics and increased fuel consumption. Computer diagnostics in this case often detects errors P0420 (low catalyst throughput) or P0430.
Causes and consequences of converters unlimited
failure for the engine
Failure of a catalyst does not occur suddenly and without reason. With the correct operation of all other systems, it faithfully serves for many years until the moment the vehicle is scrappe (and often survives it). If the catalyst breaks down on your car, melts, or crumbles, you will almost certainly have to diagnose and repair the ignition or power system.
As a rule, the converters unlimited is damage precisely due to the incorrect operation of these two systems. With a faulty ignition system, fuel in one or more cylinders does not burn out completely but enters the exhaust system. The second catalyst is force to burn off increase volumes of hydrocarbons, which leads to their sintering. Spark plugs, coils, or high-voltage wires can cause major trouble.
A malfunction of injectors, which begin to pour fuel, leads to similar breakdowns. Worn or stuck oil scraper rings of cylinder-piston group or failure of oil scraper seals lead to the same result, only engine oil burns out in a catalyst.
Another common cause of converters unlimited failure is severe mechanical damage leading to the deformation of the housing. It is important to remember that thin-walled combs can easily crumble even with minor physical exertion. Leaving off-road, it will be useful to attend to the installation of additional protection for underbody as well as your car catalyst.
Failure to repair the converters unlimited is dangerous because small particles of ceramics can get through the exhaust tract straight into the engine cylinders. Once there, they instantly scratch the cylinder walls and completely disable the engine. Suffering from ceramic debris and turbine (if any).
Additional heating of the exhaust tract leads to deformations of the cylinder head and greatly reduces the resource of a power unit.To avoid critical breakdown, do not bring your car to a deplorable state and fix the converters unlimited malfunction in time. Fortunately, it is quite possible to do this even on your own.