Engine Performance problem
2000 Ford Focus 4 cyl Front Wheel Drive Manual 136000 miles
I have replaced the plugs, wires and coil. I have an engine light P0420 catalist below threashhold, was cleared and stayed gone for two days. Power is good when I take off but when holding the throttle steady it has an occasional surge like it is missing but no strong bucking. What else could be causing this issue? I have looked at the O2 readings and they seem to be W/I perameters so don't know what is triggering the code either.
have the same problem?
Thursday, March 12th, 2009 AT 12:28 PM