Catalytic Converter Problems
Autozone Scan Code p0420
My 1999 Chevy Monte Carlo has catalytic converter inefficient. The converter is going to have to be replaced. If no other codes, then that should take care of the problem. If other codes, will need to get those repaired first.

Toyota Corolla Won't Pass emissions Test
The Catalyst, EVAP and O2 sensor test in the computer of my Toyota won't show ready even after driving the car for a long time. How do I reset the computer?

EGR and Catalyst Efficiency Low
Codes on my 2001 Chevrolet Malibu lose power may go 25 and may not go at all never really dies out that much sometimes will start right back but usually have to leave sit a couple minutes and then it may be fine for a couple days short distances.

Why does My Oldsmobile Alero 3400 V6 Chug at 35 MPH
When you go 35 or higher like it not getting gas or something . It has got worse since i changed spark plugs and fuel filter.

My Buick Lesabre has code P0420
Mass airflow sensor and 02 replaced and then had a new catalytic converter installed 2 weeks later. Car runs fine but now I have the check engine light coming on several months later.

No Power, Engine Runs Bad
I have a Pontiac Grand Prix 3800. It doesn't have any get up and go. When I floor it, it bogs right down. I changed the fuel filter but it made it worse. I had it put on a scope at two different repair shops.

2002 Pontiac Grand Am SES p0300 p0404
Replaced fuel filter, fuel pressure regulator,plugs, plug wires, air filter, and EGR valve. The EGR valve was replaced after the service engine soon light came on. Catalytic converter damaged? All other repairs were made before the light came on but after symptoms started to appear.


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