Censer behind the catalytic converter, check engine light stays on, car acceleration is sluggish as a strong odor.
You need to scan the computer for trouble codes, since the CEL is on. Autozone and others do scans for free. The code or codes should be followed up, as that might indicate the problem. Post them here for help.
That sensor behind the converter is the "downstream" oxygen sensor. It is there to monitor the efficiency of the converter.
With that smell and the other symptom, it is possible the honeycomb structure inside the converter has broken up and is plugging the exhaust stream. Have that checked. One method is to pull the exhaust off somewhere before the converter and see if the engine runs much better (very loud, but better). The life expectancy of a catalytic converter is about 14 years, so yours may need replacing. First check the trouble codes, and get an expert's opinion before replacing-they are expensive. Is the smell like sulfur or rotten eggs? Often an indication of a bad converter. If the smell is more like raw gas, the engine is running too rich, so the fuel pressure and fuel pressure regulator should be checked, along with the possibility of a leaking injector. Good luck.
The sensor is the oxygen sensor and it has a lifespan based on mileage and that is around 60,000 miles. If they go bad you have the driveability issues that you are talking about. But if the catalytic converter is bad too then it makes it worse.
SOURCE: 2001 Chevy Prizm: Sluggish acceleration, recently replaced Cat.
Well 1 way to tell if it is the cat un bold the exhaust at the manifold or try and remove the oxygen sensors in front of the cat if it runs fine then you know that the cat is pluged
SOURCE: 97 Lumina dash warning lights stay on
For the security light you need to replace the ignition lock cylinder or bypass the security system. For the other two, you need to have the car scanned to see what codes are in the ecm and the abs module.
SOURCE: 1997 Chevy Lumina 3.1L Security Light Problem
check your inteior light switch. for a tempory fix remove the bulb
SOURCE: Chevy Blazer P0303 and P0420
Most probably and if a cat is not flowing proper is causes back preasure that can result in sticking or burned vavles,mechanic not nice by saying ignore the cat effiency code p0420.Can ussually have cat replaced at aftermarket muffler shop for approx. $200 cheaper than valve job or excessive fuel that you have used and damage that may occur to your engine.
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