Someone gave me a answer and asked me a question. Yes it did stutter still after the spider change but now the catalyst went out but I was still driving,but now I can't put it in gear and go anywhere when I put it in gear it goes dead. I didn't have $ to fix so I was told to poke holes in the catalyst to let it breathe but it still stalls the same I NEED HELP. ITS A 1999 blazer 2dr
If you give it some gas will it stay running and rev up?
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