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Discussion Starter · #1 ·
Hello everyone,

The other day when I was going to work, all of a sudden my car started making rattling noise at 70-80mph. I noticed that everytime I pressed the accel pedal, the noise would get louder, and the pick up suffered a bit. So I put the car in Neutral at 70mph and gave gas, the noise was still there but not as loud.

Then I took the exit, and as I stopped at a light, the noise stopped. When the light turned green, and as I accelerated, the pick-up suffered drastically and the engine was making a firing noise. Almost like a motorcycle engine like "pat, pat, pat... and it became faster as I accelerated.

I got to work, turned my car off and finally on my way back from work, the noise went away. Now the car's fine.

What could be the problem? Any discussion helps !!!

Thank you for reading this....2004 sentra SE-R, 2.5L
 

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Discussion Starter · #3 ·
No coolant loss, No Headers....everything stock...except brakes lol

I dont' know if I have any butterfly screws missing..are you talking about the pre-cat manifold and butterfly screws???

About 1.5 years ago, my pre-cat was rattling and I put a used one from a junkyard. After that the noise went away but the check engine light's been on since then. (I should've just went performance headers at that point)

When I experienced this noise, and only once, this mechanic told me that one of your cylinders could be misfiring, maybe spark plug, or any coil issue

Thanks
 

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Discussion Starter · #6 ·
More to the story

OK so finally took a day off and got my SE-R checked out. (Saw a GT-R there and touched it...ahhhhh drueling..)

In any case, after the initial noise went away, last week, my engine oil went dry. Luckily I pulled over, checked my oil, and put in fresh new quarts(3). The funny thing is I just changed my oil 1.5 months ago.

Ok so I took it to the dealership to get it checked. They gave me a SES code of P0420 (for inefficiency in cat converter)

Beyond that, they pressure tested the engine and said my engine is shot...Internal failure and dosen't hold presure. WTF dude, nissan engine gets shot at 93K??? I dont' even race, given I do drive a little rough but the car is suppose to be driven that way....

BTW the estimated with labor of engine and new cat is about $6000-7000...
My freaking jaw dropped...I was planning on running this car to the ground and buying another SE-R but I'm kinda loosing faith in the SE-R's man...help..lol
 
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