Troubleshooting: chirping sound coming from front left (2 Viewers)

[Super77]

Driving me crazy. It’s a quiet “chirp” sound, seems to be at the driver side front. Too quiet to record, too loud to ignore

- not rotational
- not rhythmic
- same sound at low or higher speeds. Above 45mph, engine and wind noise drown it out
- not as present on very smooth surfaces. Very pronounced on gravel and old pavement.

Best guess is front suspension: Sway bars? Control arm bushings? Suspension is stock and mostly original, except for the shock absorbers.

Troubleshooting order?

 

[riffman12]

If you bounce the front corner with your hands can you hear it? Like is it linked to the suspension going up and down? If so, I'd start with inspecting the lower ball joint, tie rod end, and the sway bar frame bushings.

 

[JohnnyLX570]

Driving me crazy. It’s a quiet “chirp” sound, seems to be at the driver side front. Too quiet to record, too loud to ignore

- not rotational
- not rhythmic
- same sound at low or higher speeds. Above 45mph, engine and wind noise drown it out
- not as present on very smooth surfaces. Very pronounced on gravel and old pavement.

Best guess is front suspension: Sway bars? Control arm bushings? Suspension is stock and mostly original, except for the shock absorbers.

Troubleshooting order?

I had a chirping sound on my 2013 LX570, bothered the hell out of me, the guy installing my winch opened the hood and screwed out the hood bumps a couple turns that's what mine was, hope yours is that easy.

 

[shane431]

What about the shock bushing? Had a similar issue and this fixed it.

 

[Mike NXP]

If you bounce the front corner with your hands can you hear it? Like is it linked to the suspension going up and down? If so, I'd start with inspecting the lower ball joint, tie rod end, and the sway bar frame bushings.

^^ This will be the key to narrowing it down...but get a fat friend to help you rock the truck around while you crawl underneath to hear / feel around....otherwise it will be a guessing game and all suspension parts will be mentioned

 

[TahoeZ]

Squeaks and chirps are typically rubber bushings.

 

[JohnnyLX570]

Squeaks and chirps are typically rubber bushings.

My squeak came from the rubber bushing the the hood rests on, simple fix, screwed it out a little.

 

[mokrunka]

Jump up and down on the fender to see if you can hear it and localize the sound better. Options are:

- sway bar bushing
- shock mount (upper or lower)
- upper or lower control arm bushings

You could also just spray some silicone grease in all of the above bushings and that may get rid of the noise. If you do it one by one, and aren't otherwise able to tell by inspection which it is, you can maybe narrow it down. Spray lube all over the bushing you're testing, go for a drive, see if sound is still there, move on to the next one, repeat.