NitroViper

iTrader: (2)

Ok well I have a wuwuwuwu sound coming from my engine bay. At first I thought it was a pulley or the serpentine belt. Changed them all and the sound was still there. I decided to run the car without the serpentine belt and see if it still made the noise and it did.
Next step was to do the timing belt and water pump since I had to do that anyways. Finished that today and the sound is still there!!!

It gets worse as the car gets hot. It's not always there and sometimes hard to hear. The sound changes a little going from drive to park but not much.

I wanted to get a video of the sound with my phone but it died when I started recording. It will be hard to catch on the phone tho. Its not super loud.

Ive heard PCV valve can make those types of noises?

jimmyfu

Power steering pump? There's a bearing in there.

NitroViper

iTrader: (2)

It's not that because It happens with the serpentine belt off.

NitroViper

iTrader: (2)

If I take the oil cap off the sound goes away. You can hear it sucking air when I take it off.

Do these cars have 1 or 2 pcv vales?

t-rd

It is the aftermarket timing belt tensioner components. You need to use OEM tensioner pulley and OEM hydraulic tensioner. Look here, https://www.odyclub.com/forums/52-20...acement-4.html

NitroViper

iTrader: (2)

The gates kit came with OEM pulleys. those arent making noise. Are there any other air vents besides the PCV? I just changed it out from one at the junkyard and noise is still there but sounds a little different.

csmeance

PVC or purge valve?

NitroViper

iTrader: (2)

Ok well I have a wuwuwuwu sound coming from my engine bay. At first I thought it was a pulley or the serpentine belt. Changed them all and the sound was still there. I decided to run the car without the serpentine belt and see if it still made the noise and it did.
Next step was to do the timing belt and water pump since I had to do that anyways. Finished that today and the sound is still there!!!

It gets worse as the car gets hot. It's not always there and sometimes hard to hear. The sound changes a little going from drive to park but not much.

I wanted to get a video of the sound with my phone but it died when I started recording. It will be hard to catch on the phone tho. Its not super loud.

If I take the oil cap off the sound goes away. You can hear it sucking air when I take it off.

I changed the PVC valve and it still does it.

Can someone take their oil cap off when the car is running and see if it makes a suction noise?

Jackass

I can check mine tonight when the wife gets home....I think the video is critical here.

Also to note...why another thread on this? Your other thread was active.

justnspace

iTrader: (1)

the title is more interesting, here.
I clicked this link, but not the one titled wuvwuvwuvuwuvuwuvw


i'll merge.

NitroViper

iTrader: (2)

Yea, I couldn't edit the title or I would have. And figured I could get someone to check theirs with a better title.

After messing with my car today and checking my air filter I noticed my air intake tube doesn't have a hole where the line goes to the valve cover. You know the big metal tube that goes into the side of the air intake tube? In the fall I had to replace the air intake tube because I noticed it was torn. I guess I never paid attention but is this nub supposed to be blocked off? It seems kind of pointless to have the nub the metal tube goes in when its not going all the way thru.

This a random pic for reference. See the nub for the line that goes to the valve cover? It not drilled all the way thru and totally sealed. Is that hole supposed to go all the way thru to suck air from the air intake?

NitroViper

iTrader: (2)

looking at this video it doesnt look like that nub goes all the way thru? Is it just a block off? I mean what is it even coming from the valve cover for if it does nothing?

05 Acura TL

The "nub" should have a hole that goes all the way through, assuming I understand what you are asking/saying, the metal tube that goes in it and then connects to the valve cover is the "breather" for the engine. It draws in fresh air as required by the crankcase.

Which if that is blocked off, then that would possibly explain the noise you are hearing and why there is suction (or at least noticeable) when you remove the oil cap. Crankcase has to get air into & out of it somehow and the inlet is blocked off. lol

justnspace

iTrader: (1)

Good detective skills, gents!

t-rd

There is supposed to be a metal line there connecting the rear valve cover and the intake air tube. If yours is missing, that means some aftermarket intake was installed in the past and the dude tossed or cut it off.

NitroViper

iTrader: (2)

Well I drilled the hole out, will report back after some driving to test it.

t-rd

More hissing after drilling?

NitroViper

iTrader: (2)

It fixed the suction issue and the sound seems to be gone. Only been 1 day tho.

NitroViper

iTrader: (2)

The suction and the wuwuwuw sound is gone, but now when you stop the car the idle drops and sort of surges for a second and stables out. Maybe the car needs to relearn its idle?

justnspace

iTrader: (1)

vacuum leak, thats why the person decided to solve the issue by blocking that nub in the first place.

which is incorrect

NitroViper

iTrader: (2)

It came brand new blocked off. I guess I never looked when I replaced it. It just was never drilled all the way thru from the factory.

05 Acura TL

Well even if you left that unplugged and exposed to the air it wouldn't be a vacuum leak. Its pre throttle body/intake, it would just be unfiltered air.

That would just be an molding error, for the idle issue I would spray around some water or carb cleaner on areas where a vacuum leak could occur and see if the idle changes any. Also check and make sure a hose didn't get knocked loose.

How bad of a idle surge is it? If its like 100 rpms and you don't have a load on the car (a/c for example), then it probably just needs an idle relearn, if it spikes to like 1100 and settles back to 750ish, the you probably have a leak of some form.