Hhr need help idle jumping nd stalling

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Jul 30, 2025 | 03:21 PM

#51

Oldblue

Administrator

Joined: 10-13-2011

Posts: 40,082

From: Welland,Ont Canada

A new catalytic converter isn’t that expensive and just 5 fasteners and 2 O2 sensors.

Jul 30, 2025 | 04:02 PM

#52

Jay12

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Joined: 06-26-2025

Posts: 24

Im in NY has to be legal to pass dealer quoted 2500 just for cats nd most places won't ship the aftermarket cats to my state iv been thru this with other vehicles

Jul 31, 2025 | 03:26 PM

#53

donbrew

Moderator

Joined: 01-23-2009

Posts: 26,532

From: Fredericksburg,VA

NY follows Cal.
You need to find out why the cat clogged.
Post #3 reports P0420,

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