Clicking noise under acceleration - Infiniti FX Forum : FX35, F45 and FX50 Forums
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#1 (permalink) Old 06-25-2009, 01:15 PM
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Clicking noise under acceleration

HI, has anyone ever heard a clicking or rattling noise under slight to mild acceleration from the engine bay? I have a FX35 and I never heard this sound before until the last few months and its starting to bother me.

I've searched threads here and came to the conclusion it can be the following:

- Lose bolt
- Fuel dampener although sound should be when in drive but not driving or in idle
- Belts

I'm going to check all these things and see if I find anything, but in the meantime if anyone can help me out that would be much appreciated!!
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#2 (permalink) Old 08-03-2009, 10:12 PM
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Re: Clicking noise under acceleration

Sounds like a heat shield, with a lose bolt. Maybe near the exhaust?
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#3 (permalink) Old 08-03-2009, 10:26 PM
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Re: Clicking noise under acceleration

Are you sure it's from the engine bay? Might be the dry axle click, I had mine fixed in the last couple months.

'07 FX35 Sport/Tech black on brick
|K&N drop-in|Stillen STB|BC coilovers|Hankook Ventus ST RH06 265/50 front 295/45 rear|metallic black GTR 20's|GTSPEC Braces|APS 2.5" Exhaust|MD 5/16" Spacer|
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#4 (permalink) Old 08-03-2009, 11:58 PM
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Re: Clicking noise under acceleration

hrmm...loose heat shield...i was under the car yesterday and noticed that the heatshield on the cat rusted enough for half of it to be loose, gonna get a strap and tighten it up.

dry axle click? is there a TSB on that? How can you test for a dry axle click? what should I look for?

THanks for the input guys, helps me out big time!
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#5 (permalink) Old 08-04-2009, 12:09 AM
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Re: Clicking noise under acceleration

Yes, there's a TSB, listed for G35 though. You can't test, you just hear a clicking under acceleration, or down shifting into high RPM's. Did you search for it? I know there's a thread...

'07 FX35 Sport/Tech black on brick
|K&N drop-in|Stillen STB|BC coilovers|Hankook Ventus ST RH06 265/50 front 295/45 rear|metallic black GTR 20's|GTSPEC Braces|APS 2.5" Exhaust|MD 5/16" Spacer|
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#6 (permalink) Old 09-09-2009, 11:10 AM
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Re: Clicking noise under acceleration

Well its not the heat shield, I strapped them down with stainless steel rings.

What's funny is that the clicking is not always there, only if i keep it in a low gear and push the throttle just enough before it tries to downshift, its like a rattle type click and i'm wondering can that be valves? If I down shift it only happens if I apply gas.

I'm going to try and find it but if anyone has the link that would be great. I'm sure there's alot of G35 TSB's.
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#7 (permalink) Old 09-09-2009, 01:29 PM
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Re: Clicking noise under acceleration

Does it also happen when you downshit and the rev's climb up?
http://my350z.com/forum/engine-drivetra ... -axle.html

'07 FX35 Sport/Tech black on brick
|K&N drop-in|Stillen STB|BC coilovers|Hankook Ventus ST RH06 265/50 front 295/45 rear|metallic black GTR 20's|GTSPEC Braces|APS 2.5" Exhaust|MD 5/16" Spacer|
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#8 (permalink) Old 09-09-2009, 08:30 PM
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Re: Clicking noise under acceleration

It only happens when there's tension between the engine and transmission, like when the engine is trying to push on a gear it can't accelerate as fast as I want, but when the revs are high without tension, there's no noise.

Its driving me nuts because its an on and off sound. I'm wondering if there's some loose bolt and the washer is rattling or a rock stuck in somewhere....its more noticeable when its hot outside though...thinning of the oil? causing valves to click more?
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#9 (permalink) Old 09-09-2009, 08:35 PM
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Re: Clicking noise under acceleration

Quote:
Originally Posted by StuLax18
Does it also happen when you downshit and the rev's climb up?
http://my350z.com/forum/engine-drivetra ... -axle.html

Watched the video, actually had to find it on youtube because the one you sent me was taken off by the user...anyhow, the clicking on the video happens once each time it goes back or forward. Mine happens with the revs of the engine under tension only. Either i'm going crazy and this was always there or its a new sound...lol
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#10 (permalink) Old 09-09-2009, 09:11 PM
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Re: Clicking noise under acceleration

What do mean by tension? Tension is usually a force applied to a string.

'07 FX35 Sport/Tech black on brick
|K&N drop-in|Stillen STB|BC coilovers|Hankook Ventus ST RH06 265/50 front 295/45 rear|metallic black GTR 20's|GTSPEC Braces|APS 2.5" Exhaust|MD 5/16" Spacer|
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