When water gets to the ignitions system, hesitation would occur due to misfiring. Over time, oxidation occurs and continuity becomes bad.
Remove spark plug and ignition coil wire individually to check for bad contacts at either end. A good contact would look clean with no signs of oxidation.
Test the spark plug wires resistance. They should be 3 to 6.7 kilo ohms per feet.
Remove the distributor cap to check for presence of water.
The Catalytic Converter sensor does not control the computer.
You problem should be misfiring resulting in loss of power contributing to the higher fuel consumption resulting in the indicator light showing as the catalytic converter would be glowing red hot when excessive fuel gets to it.
Tuesday, November 23rd, 2010 AT 12:16 PM