If the converter is plugged, it will usually get so hot, you will see it glow red at night time. Also, listen to it with the engine running for ratteling, whisteling or hissing sounds. Finally, you can check the tail pipe to see if there is ample back pressure coming from it. You can check back pressure both before the cat and after, but it is an involved process.
As far as the fuel pressure, here is a how to for checking it. You will need a gauge, but most nationally recognized parts stores will lend or rent one to you.
Let me know what you find. NOTE: If the fuel pressure is low at the fuel rail, you will need to check it before the fuel filter to determine if the filter is plugged or the pump is just weak. Let me know if you need further directions.
Friday, December 4th, 2009 AT 10:42 AM