I'm convinced my cat converters are the problem
will know soon

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posted previously by me..............

Hello All,
I appreciate all the replies.
**Note: Thru all this I've never gotten a check engine light, and the "stomp
test" comes back clean.
**Coils look good visually, verified battery voltage at all 6 connectors,
and verified resistance of 0.6 ohms on all six.
**I agree w/ Don about the car should still run with low octane, but knock
sensors should retard timing and performance would suffer. I've been
thinking for some time (even before it started running bad) that one or both
knock sensors were bad, because I get lots of pinging when using low octane
fuel, but I've never worried much about it becaused I normally use 93 Oct
anyway. And I've never gotten a trouble code for the knock sensors.
**I'm beginning to think something is keeping trouble codes from being
stored???Is this possible?
**I was thinking MAF also. I have a used MAF on the way from a salvage yard,
should arrive tomorrow.
**If that's not it, I'm thinking OXYGEN SENSOR. Car has 150,000mi - probably
could benefit from a new one anyway.
 I will test as per Bentley, but even they say that the test won't be 100%
conclusive with an exhaust gas analyzer.
**If still no cure, I may break down at this point and go to the dealer for
a diagnostic.
**QUESTION- Could a clogged catalytic converter cause these symptoms?
**QUESTION- Could all the crazy fuel additives and Oct boosters I ran for
those 3 to 4 days have fouled the OxygSensor (or just pushed it into the
grave it was already leaning over)?

Thanks for all the good stuff guys!!!!