I bought the car 3 weeks from a dealer. It had an engine code and cylinder #2 was misfiring which i fixed with new spark plugs on all cylinders and a new ignition coil on the second one. That fixed it.
Now 2 weeks later, the car started losing power. Very slow acceleration even with the gas pedal all the way to the floor. Cruise control stopped working. rear muffler had a hole in it. I suspected there was an exhaust leak because there was a very loud rumble and i found a hole on the pipe leading to the muffler.
I had the muffler replaced, which means the exhaust leak is now fixed. But now for some reason i still didnt get the power and the acceleration back including the cruise control.
The exhaust makes a weird noise, so I wanted to ask you guys here whats wrong?
I included a video so you can see whats going on.
Well I have a catalytic converters tested they often clog up on those models they can be pressure tested
What do you think I should do? This model has 2 of them. Front and rear.
What you should do is get more data! Use a scan tool with an enhanced diagnostics feature (and find which scan tool has enhanced diagnostics for this particular Nissan model). A scan should come up with a P0420, if the cats are bad. Then pressure test to confirm the scans.
What does it cost to replace each of these? Roughly $1000-1200 a piece, that's a loose estimate.
If it's not the cats, then more diagnosis is needed, obviously.
No codes tripped. No engine lights. I have not done a pressure test yet. The cats for this model range between 200-300€ a piece. I want to try anything else before replacing them.
You should also be using the "live data" mode, and seeing what's happening with the vehicle, when it's in use. Theoretically, you should be failing smog/pollution tests, if the cats are a problem.
Another possibility is some other obstruction (gunk, animal feces, etc) in the exhaust system. However, I think that you'd smell that, right off.
I git an emissions test done on the car and it came up normal. Nothing unusual with the CATs.
Good. Cats are very expensive. Better not to need them. Next, as I suggested earlier, is exploring "live data" mode. You made need a diagnostician to make sense of some of the graphs, numbers and such. Bidirectional testing is probably indicated as well, depending on what the live data shows.