Once again....guess that noise

[smug]

It is not an engine noise this time! This noise is so random too and that makes it hard to diagnose. The first time I heard this noise I was accelerating and around 20 mph it seriously sounded like a rod knock and scared the shit out of me, but is defiantly not a rod knock. So that is the type of sound I am hearing and it can happen when I accelerate slowly around town, hitting bumps, and shifting into gear. The reason why it makes the noise when I accelerate is because my car is pretty low so I get some drive line vibration that that speed. The noise sounds like it is coming from the left front suspension area. Car has new control arms, and wheel bearings, GMPP Koni struts with about 50K on them, cant find anything making contact where it should not, and car drives totally normal. It sounds like something is banging something and when I accelerate, if the car makes the noise it sounds like a engine rod knock.


And GO!

Click to read more...

 

[10sec]

Chain finally giving up? Remember my noise my car was making with the stretched chain? Yucky, yuck.

 

[smug]

I hope not. Did your chain make noise over some bumps in the road?

 

[10sec]

Nope, just under acceleration, made a popping noise, but could sound like a bearing if it was a faster speed. I don't have any vids of it though, unfortunately. You could be in the PANDA/10sec boat and have a cracked flexplate

 

[smug]

Na I went through that a few months ago.... lol


The noise is so random too so it makes it super hard to figure it out.

 

[Turbocharged400sbc]

any play in the I/O tie rods? any play in the rack shaft itself?

 

[smug]

any play in the I/O tie rods? any play in the rack shaft itself?

Have not checked

 

[Turbocharged400sbc]

fuck, look for powder rust around the subframe bushings/mounts that would indicate movment...i just felt this the other day on HK's junk

 

[smug]

Is HK's cradle moving?

 

[Turbocharged400sbc]

one sec

 

[Turbocharged400sbc]

 

[Turbocharged400sbc]

i talked to a buddy an old GM tech and hed did confirm what i remembered that dealers HAVE rtv'd subframe/unitbody mounts to quiet em

i was figuring fuckit, fill them rubber barrel bushings with urethane and glue that whole fucking mess to the chassis

prob a good bit cheaper than making solid metal bushings lol

 

[smug]

hummmm. Ill have to check that out.

I noticed that when I jacked the car up the other day at the front center of the cradle it made noise while lifting and lowering the car. Then the next time it was quiet lol.

 

[10sec]

Interesting, i didn't know that could even happen

 

[smug]

All that 3800 PAH shifting subframes

 

[10sec]

Seriously Maybe the PAH cracked the core support and it's like a cracked flexplate, but it's a core support? (seriously joking, listen to James) but it would be funny right?

 

[10sec]

This noise is confusing...

 

[SHOmuff]

I'm glad it is defiantly not a rod knock

 

[Handsome Jesus]

spray entire car with WD-40. Profit.

 

[Eagle]

spray entire car with WD-40. Profit.

Or drive it into a huge vat of warm bearing lube. The purple kind. Sounds like a good time to me.

 

[smug]

lastly is to drive off a cliff

 

[Turbocharged400sbc]

dont get all dramatic

 

[smug]

checked the subframe mounts and they looked ok.. nothing like HKs junk.

checked the tie rod ends for play and they seem solid

Had a wheel alignment done a month ago and they never said anything was loose or wore out.

 

[Turbocharged400sbc]

ive seen where people will tighten the sway bar end links without weight on the control arms and instead of the bushing shoulders sitting inside the sway bar/LCA hole it sits above it and the end link bolt touches the edge of the holes and makes noise...
no cracks in the unitbody boxes the subframe bolts to? seen that once
is the motor mount horseshoe sitting on top of the front motor mount crossbar?

if ya wanna narrow it down get a couple of them cheepo pen recorders and zip tie em to a couple places and make some noise and see which is loudest when played back

 

[smug]

I will double check the endlinks because I did install new endlinks when I did control arms and yeah......
Did not see any cracks in the unibody
Motor mount horse shoe in not touching the cradle but I am going to check the oil pan to cradle clearance because I have the aluminum oil pan and that is kind of tight in that area.