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p0420 and p0172 hard start

J

Jrs1987

New member
Had the emissions code for a while now. Maf was replaced. Fuel rich code just came up. Car takes a few seconds to start then turns over. Sometimes I have to give it a little gas to get it to stay running. Bad cat maybe? Please help. Thans!
 


I dont actually have the p0420, sorry should have specified, i have the p0172 code and am definitely running rich im thinking it may just be the tune tho
 
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