Yes it will always drop if the converter is clogged. Mileage will gradually degrade, and power will drop off until eventually the car won't have enough power to drive safely.
Your catalytic converter is at the top of your motor at the exhaust manifold take out the 4 14mm screws that connect your converter to your manifold drop down out the bottom of engine and replace another really simple fix
take the bolts off. drop the old install the new one.
Answer One is a sulphur like odor, much akin to rotten eggs. Gas mileage (MPG) will drop significantly too. A P0420 DTC (Diagnostic Trouble Code) will illuminate the check engine light.
A foul smell is the most common sign of a bad catalytic converter. If you smell what seems to be a rotten egg and it gets stronger over time, the catalytic converter is not working properly. A large drop in your fuel economy may be a sign that your catalytic converter is going bad or is blocked. A lack of power, especially at high speeds, may be a sign that the catalytic converter is going, or has gone, bad.A vehicle that stalls during idle, or idles rough, may have a blocked or bad catalytic converter. Your catalytic converter may be blocked if you experience bucking or hesitation while trying to accelerate. Additionally, your vehicle may run at a higher than normal temperature. A catalytic converter typically doesn't go bad without an underlying cause. A mechanic should be able to find the original problem and may not have to replace the converter.
No. A drop in oil pressure can be nothing more than a faulty oil pressure sending unit. It can also be caused by a weak oil pump, worn piston rings, worn bearings, or defective oil pressure gauge. The catalytic converter will not cause this.
Yes. The system will go into limp mode. Performance will drop along with fuel mileage. Extended periods of running time with O2 sensor(s) disconnected may cause serious damage to the catalytic converter(s).
A partially clogged converter will rarely prevent you from driving the car. You can usually drive it indefinitely if it is only partially clogged. You will however see a drop in performance and fuel mileage. Once the converter becomes completely clogged, which is will over time, it must be replaced. Also if you have state emissions testing it will fail with a bad converter. A bad converter is also polluting the atmosphere. Before replacing the converter find out why it failed. Also know that the converter may be covered by the 8 year 80,000 mile federal emissions warranty.
I have the same fault code on my 2003 Corolla. From my research, the code means that the car's computer is sensing that there has been a drop in catalytic converter efficiency. This is determined by the computer by comparing the signal of the O2 sensor mounted before the catalytic converter with the signal of the O2 sensor mounted after the catalytic converter. If the two signals are too similar, this means that the catalytic converter is not doing it's job. A number of things can be the cause of the fault code: # Bad catalytic converter - It's reached the end of its useful life. It's time to replace it. # Engine leaks oil and/or coolant into exhaust- Oil and/or coolant is leaking and is clogging the catalytic converter. Engine seals and gaskets should be checked. Engine compression should also be tested. Any leaks should be repaired and the catalytic converter should be replaced. # O2 sensor/s bad - Although O2 sensor failure usually gives it's own fault code, not everything is perfect. Sensor's should be checked anyway just in case the computer did not catch the fault. In this case sensor/s need replacing. I hope this information comes in handy. Unfortunately, what ever your specific situation is, it is most likely a costly one.
If the converter is plugged, contaminated, damaged or rusted out, it must be replaced. Likewise, if the OBD II system is showing low catalyst efficiency, the converter must be replaced. Driveability symptoms such as a drop in fuel economy, lack of high speed power, rough idle or stalling are classic symptoms of excessive backpressure due to a plugged converter. Checking exhaust backpressure and/or intake vacuum will tell you if there's a blockage. The important point to remember is that converters don't just plug up or die for no good reason. There is usually an underlying cause which must also be diagnosed and corrected before the problem can be eliminated. Diagnosing a plugged or fouled catalytic converter is only half the fix. Replacing a bad catalytic converter will only temporarily restore things to normal because unless the underlying problem that caused the original converter to fail is identified and fixed, the replacement converter will likely suffer the same fate. Always replace the O2 sensor if the converter needs replacing. That may not be all that needs to be done. A defective spark plug or wires, or a burnt exhaust valve will also destroy the converter.
No, a spoiler for a 2004 Dodge Intrepid will not drop the gas mileage.
Could be a plugged fuel filter, a plugged air filter, a plugged catalytic converter,
If the check engine light illuminated start with having the codes read. Could be as simple as a dirty fuel filter or worse, a damaged catalytic converter.