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International Automotive Technicians Network
Re: Hyundai P0133 nightmare
Posted to Technical Discussion Forum on 5/20/2015

Hey Clinton,

I was able to find a problem with the CAT on the one I looked at. At idle, the switching was fine and I found the code to be setting around 2300 RPM. I installed a back pressure gauge and found a slight restriction that was worse at higher throt... Login to read more.