Quote:
Originally Posted by brillo_76
Mostly if the cat webbing is not all melted to a blob. Or just gone it's from running too rich. Newer vehicles will tell you that cat is burned out by giving you a too fast airflow error. The o2 sensors can tell the cat isn't functioning properly or gone.
What lead up to this? Like you put high flow injectors in and the cat couldn't compensate.
Was it buring coolant for a while?
Burning large amounts of oi?
If not, I am wondering if this is the long term effect running ethonal in the gas and thus damaging them.
Just a thought and can be nothing.
As something plugged that cat up.. 
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The only thing I can think of, is that time I one of the ignition coils died on a trip and I was forced to carefully drive for a while to get closer to home and to a shop. Other than I cannot think of anything.
Quote:
Originally Posted by 19963.4lsr5
I doubt it’s ethanol. Or my fleet of vehicles would all require them.
Burning oil, running rich. Yep.
Driving with a flashing check engine light. Most defiantly yes.
Antifreeze. Not really or mine once again would be shot and at 299,890 miles it’s doing fine and sets the cat readiness monitor on my first drive cycle test.
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Well, I know newer cars are "supposedly" designed to handle ethanol. But for cars from the 90s I think they "claim" they can, but it still does harm.
