Hello, so I have a 2011 Chevy Aveo LT and I have been working on it all year long I fix one problem at a time due to finances being tight after divorce. At any rate I took too long to fix my O2 sensors and when I finally did I had a hole in the heater hose and it overheated. Replaced the heater hose replaced the sensors and unfortunately had to replace the thermostat and mechanic came to do a checkup and the engine still is on and can't pass emission. Brand new O2 sensor(lower) and he ran the diagnostics and was like it's saying a defect somewhere well it was the downstream O2 sensor but how is it defective it's brand new!!?? Is it possible he didn't place it right? And one more issue anybody know what tools I can use to change my hub bearing I've bought the parts I just need the tools I'm not paying $400 for labor just to replaced something I know I can do myself hell I've done majority of everything else.
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