My 2008 Nissan Altima 2.5 S used to have a very clickey noise to it, but it comes and goes. I'm not sure whether temperature effects this case, but it is not worrying, I just want to diagnose it.
+ the other day, cut off has set to 2.5 thousand RPM, and it showed a (no check engine) code mentionning Bank 1 is detecting "Too rich" (my flex pipe part is rusted and is leaking, but it makes me wonder what sensor it is. MAF, O2, etc..) Thanks in advance, and stay safe you all! Here is the video of the clicking noise
Hard to tell from the video but you you have a hole or leaking exhaust that can cause the sound, or be what you’re hearing.. It will also mess with your air fuel mix/02 sensors. Usually those flex pipes are bolted in, and if you order one they usually come with new bolts, because a good majority of the time they will snap trying to take them off. Not a terrible or difficult job to do yourself if you have the proper tools, the flex pipe on yours is about 3-4 foot total length and includes the rear cat to I believe on the whole assembly. A muffler shop could just cut out the bad piece and weld a new one in, but it’s been my experience if it’s rusting through in one place, best just replace the whole piece. Direct fit replacements can be as cheap as 150-300 bucks unless you need one that will pass CA or New York emissions, then they get expensive,
I've already planned a cat delete and ordered pipe so the leak is no big deal, worse case is the sensors going crazy but I'll most likely get rid of some during this process.
Also the clicking I've heard it just a few times it's not constant.
If you do a cat delete make sure you put in a plug for the O2 sensor. Just removing them the computer goes nuts trying to figure out how to run the fuel mix.
The person doing it did an entire brake job on my car, I am pretty confident he knows what he's doing 🙂
Well unless he has a 5000 buck machine to reprogram the computer I wouldn’t let him remove the cat. Lot of people think just removing it gives you more horsepower which isn’t true. Without a reprogram it will be louder for sure, but gas mileage will get worse and you will actually lose horsepower. Good Luck!
Thanks for the advice, I did not know about that.
Tell your mechanic you want him to use and anti-sieze compound on all exhaust system threaded fasteners. You'll be glad you did.
Lovely, will do. He did so when changing my brakes, they were all siezed up due to horrible service and no greasing. Now he's done them and next service won't be until a long time from now.