gutted cat for dinner

[Chris Dyer]

So, for fuh-evuh I've had an un-diagnosable, intermittant high idle problem 
on my '87 5kcstq. Many an audi wrench couldn't figure it out.

Latest guy is thinking bad cat. It does make a tinny-vibration noise 
sometimes (I assumed it was just a bad hanger or something). It kinda makes 
sense; bad cat sends bad info to O2, the confusion begins.

Anyway, worth a try--it's the orig. cat for goodness sakes.

Also, anyone have a good source (read: cheap) for new cats?  We're gonna gut 
it for now (due to my employment demise)--aside from legality, any long term 
problems w/that?

History: new isv, throttle switch, tune up, coolant temp sensor...and much 
much more!

THANKS!
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