misfire p3000 after catalytic converter replace

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misfire p3000 after catalytic converter replace

10-24-2011, 11:08 PM

Magnacharged H2 Magnacharged H2 is offline

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misfire p3000 after catalytic converter replace

I just replaced a clogged catalytic converter drivers side on my 2003 H2. Now I,m getting a misfire code.
Truck runs good once underway , but at idle it runs rough, rpms drop and coolant temps start to rise.
I,m thinking it is vacuum related. Anyone else have this problem after replacing a cat ?

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