Thread: Failed MOT, high CO
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Old 10-15-2020, 03:58 PM   #8
Robert986
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Join Date: Feb 2017
Location: Stockholm
Posts: 375
Garage
Update:

Switched AOS, MAF, o2-sensors & spark plugs, still no luck.. Then I put back the oem cats, instead of the cheap eBay ones. o2 and HC back on zero again!

Anyone else had bad luck with eBay cats?
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