Contour Enthusiasts Group Archives Forums General Troubleshooting Zetec P0420 - Experienced Users Needed

Originally posted by BrApple:

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if the cat has become plugged up then it could cause stalling

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I've seen plugged cats and they get cherry red and the vehicle will hardly idle, let alone run.

I'll see what I find and post the results (this may take a while )

I'll keep checking back for more replys...