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Chirping noise during acceleration

Re: Chirping noise during acceleration

Postby jalvarez13 » Sep 18 2017, 6:03pm

hondabird wrote:Thanks for all the suggestions, I just filled the tank with 85 and about fifty miles in the noise is almost completely gone. Going to a another Different dealer tomorrow to see if it is a injector noise issue and maybe something in the AFM program. Also going to try and do a video.


DID YOU EVER FIGURE OUT THE ISSUE? I HAVE A STRONG FEELING IT IS INJECTOR RELATED. CURIOUS IF ITS A 'PROBLEM' OR JUST A NOISY TRUCK.

Mine only happens when i get on the acceleration bringing it past 4000 rpms. Super fast chirp past 5000..

Thanks,
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Re: Chirping noise during acceleration

Postby 1985zx900 » Sep 18 2017, 7:51pm

Could I be the AFM flapper device in your exhaust pipe after your cats. Heard people talk about them chirping when the butterfly switches position, some just wire it open . Worth a look also.
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Re: Chirping noise during acceleration

Postby Spartan » Sep 19 2017, 1:32pm

It's possible, but not likely. I've fastened mine in an open position so it's can't move and I still have the chirp.
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Re: Chirping noise during acceleration

Postby walpy207 » Sep 19 2017, 4:13pm

I have this issue as well - have yet to figure out the cause but I don't think it's the exhaust valve.
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Re: Chirping noise during acceleration

Postby MN Hunter » Aug 25 2020, 3:48pm

Good morning, I've got a 2015 5.3 with 70k on it, and it has done this noise since 60k. I can pretty consistently get it to make the chirp if I'm idling along at 1100 rpms, and give it slight acceleration. Anyone find a fix to it?
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