Cricket sound when accelerating

Michael McC · Oct 11, 2020

My 2016 with 80K miles just developed a chirping noise like a cricket when accelerating. It happens on startup and when accelerating. I was afraid it was a turbo bearing, but then found the thread below. I think it's the exhaust manifold. Anyone have experience with this?

https://www.f150ecoboost.net/threads/resolution-to-squealing-noise.8028/#post-162750

ExplorerTom · Oct 11, 2020

What if you hit the brakes fast or stop on an incline? What if you turn the HVAC fan off?

I have a cricket-like noise and believe it’s the HVAC fan.

07navi · Oct 11, 2020

It sounds like a bad bearing somewhere. I heard of ticking manifolds but not chirping ones. How often does it chirp?

Michael McC · Oct 11, 2020

The noise appeared one day, and has been consistent since then. Always occurs on cold startup and when accelerating under load. Does not occur if you just rev it in park. The pitch changes somewhat with RPM. I was thinking a bearing in the turbo. If you accelerate softly, it does not occur, so it seems like it is when the turbo kicks in, but that would not explain why it happens on start-up.
A leaking exhaust manifold would have the same profile. Only leaks when compression is high, and the RPM of the engine could affect the pitch. What I have read in other forums makes me lean towards exhaust.

Muddy Bean · Oct 11, 2020

Mine does this too. I thought it was either the wastegate valve fluttering or maybe a boost leak.

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Trainmaster · Oct 12, 2020

Take a quick check of your belt pulleys and tensioner. They sometimes make noises like that.

Michael McC · Oct 12, 2020

Trainmaster said:
Take a quick check of your belt pulleys and tensioner. They sometimes make noises like that.

Good thought...but it doesn't happen when revving. Only when under load. So I think it's compression related, thus turbo or exhaust, which are kind of the same system!
Thanks all for replies.

07navi · Oct 12, 2020

Michael McC said:
Good thought...but it doesn't happen when revving. Only when under load. So I think it's compression related, thus turbo or exhaust, which are kind of the same system!
Thanks all for replies.

It could be acceleration load related also, which brings it back to my bad bearing theory.

Brubro · Oct 16, 2020

Michael McC said:
My 2016 with 80K miles just developed a chirping noise like a cricket when accelerating. It happens on startup and when accelerating. I was afraid it was a turbo bearing, but then found the thread below. I think it's the exhaust manifold. Anyone have experience with this?

https://www.f150ecoboost.net/threads/resolution-to-squealing-noise.8028/#post-162750

My experience with this sort of noise is that it is most likely a bad bearing in one of the pulley components. Check idler & tensioner first, then work your way from there to the other parasitic draw engine components.

Good luck, due diligence will pay off. Sometimes you have to wait for it to get bad enough where it will happen in park. Tensioner and idler (and others, of course) when spun, will feel off, there will be some excessive play, etc.

legendary70 · Oct 16, 2020

Similar sound on mine. Mech told me it is the manifold (headers) area. Air is escaping (leak).

Cricket sound when accelerating

Michael McC

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