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Catalytic converter broke

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Old Nov 23, 2009 | 08:50 PM
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Default Catalytic converter broke
I was driving my Bonneville SE last week and then heard a loud noise and the converter separated itself from the exhaust pipe and muffler. I brought it to Midas and they charged $243 for a universal cataytic converter. My question is this. Now my car idles at 2000RPM on startup and the RPM'* are at 4000 when I am cruising at 100KPH. Is this a coincidence or is there something wrong?
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Old Nov 23, 2009 | 08:51 PM
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that'* not right you should idle about 750-850rpm
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Old Nov 23, 2009 | 09:14 PM
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Does it actually sound like it'* idling that high?
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Old Nov 24, 2009 | 08:17 AM
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No, it sounds like it'* idling at the normal 750-850 RPM, could it be just the RPM gauge is faulty?
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