7

I suspect you diagnosed the situation correctly: that cat looks backwards. It’s a little hard to tell from the pictures but it looks like a straightforward manufacturing defect: the cylindrical section between the welds to the ball connectors appears to be reversed. You might be able to get a muffler shop to cut that section loose, reverse it and re-weld ...


5

It's called a double D or shock absorber socket


2

You need to get through the drive cycle for your Camry. Following these steps exactly should get you there (as found on this website): 2000 Toyota Camry Drive Cycle (Engine 1MZ-FE & 5S-FE - CA Emissions Certified) Begin by: (Make sure you have between 1/4 and 3/4 fuel in the gas tank. The EVAP test will not run while your Toyota has a full tank ...


2

It's the pre-cat sensors that are used to determine the mixture departing the engine, the post-cat ones are there to monitor cat function. Since the fuel trims adapt to maintain the value at the pre-cat sensor, it'll look good, if it's producing a fairly rational but off-calibrated to the lean side signal, even though the real mix is too rich, per the plug ...


1

In very simple terms the catalytic converter is an exhaust component that converts "bad" gasses into "good" gasses. The computer of the car monitors how well this functions by looking at oxygen sensors. Your car actually has two catalytic converters. The terminology goes as follows. When something is closer engine in the exhaust it is termed as upstream. ...


1

Paulster's answer is correct. BUT . . . I would suggest between steps C and D, that you take your foot off the throttle and coast down as long as you can (you are still going to need a long no-traffic highway ... please be safe). This makes the exhaust go very lean, and tests the OSC or "Oxygen Storage Capacity" and the honeycomb matrix heat retention of ...


1

As the_storyteller said in their comment doing this removes any catalytic converters in the replaced sections of exhaust (that's pretty much part of the definition of a "straight" pipe - it's a straight through flow!) In the majority of locales this will lead to the car flat out failing any emissions tests, and there may be additional tests as well - in the ...


1

Your mechanic may be right, or at least think he is. For Engine code CCTA, there are two converters - one in the space of that "lump" in the left side of your picture, and the so-called "center" converter. The primary converter probably isn't large enough to handle the whole cleanup on the turbo CCTA engine. That may not be the right picture for your ...


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