09' 7AT Rattle/Grind noise 1st to 2nd gear. Please help.

Lethal1

Hey Guys,

Just an update. The rattle has remained and I have just been dealing with it for the past year. I have since moved and decided to mention it to my new Nissan Service dept. I sent them the audio clip and they think it is spark knock. From what I have read this seems to be pretty harmful to the engine. Anyone familiar with Spark Knock. Any suggestions on a fix. The new Nissan dealership said I should have them do a fule system cleaning to remove carbon buildup. I currently have 57k but remember my car has done this since 30k when I bought it.

NickTurnon

Post a video so we can hear what your grind sounds like.

From your description, its nothing like the sound of mine. The grind that came from my Z was almost as if a stick was stick under the car and dragging. I believe it was part of the heat shield on the cats or another piece under the car that the metal was bent slightly and vibrating at certain frequencies..

Go buy a bottle of seafoam from WALMART. Watch my DIY, and try that out.

Why did you 27k miles to do something about it?

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2009 Brilliant Silver BASE 7AT | TEIN S-Tech Springs | K&N Drop Ins & z1 Maf Tubes | AAM S-Line Short Tails | 5% Tint | 20MM Spacers | Sport Spoiler NickTurnon's 370z Build