Missed this in the previous post.
Originally posted by Tony2005:
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Plugged exhaust test.
For the OBDI 1995 Duratec, a good cheap way is to remove the O2 sensors, in this order (and see if the performance improves). Uninstall Bank 2 (radiator side) to determine if Bank 2 precat is plugged, reinstall Bank 2 and then uninstall Bank 1 (hardest one, close to firewall) to determine if Bank 1 precat is plugged.
If this doesn't pan out, you may have a plugged main catalytic converter. Battery needs to be disconnected before uninstalling and installing O2 sensors.
If your main cat is plugged, I guessed the only way to really tell is to have a shop do an exhaust pressure test.
Last edited by Tony2005; 05/31/06 03:50 AM.
