High picthed engine whine

[99ex22]

Alright I have a strange high picthed whine coming from my motor. Ive been trying to figure it out for a couple days now with no luck. The more gas I give it the higher picthed it gets. It kinda sounds like a weak supercharger. The first thing I did when it started to whine was take the drive belt off and start it up to see if it was a pully problem....Wine was still there. From what I can tell it sounds like it's coming from the plastic intake manifold but that gasket is only a little over a year old. Any ideas? Thanks,

-Russ 99 4.0L SOHC 163,000

 

[99ex22]

Bump! No ideas?

 

[IZwack]

Whine like a metal-to-metal whine or air turbulance whine?

 

[fissionbait]

Like this?--->http://www.youtube.com/watch?v=hQxp5oWxKrY&feature=channel_page


That's one of my videos, I think it's my transmission. Check and see if it's louder underneath near the tranny and engine.

 

[Lloyd10977]

Use a piece of garden hose and use it as a type of stethoscope to pinpoint the location. Check first in the are of the IAC (idle air controller) located on the driver side of the intake.

 

[99ex22]

it's a air turbulance type whine. Im going to drive it and get a video/sound so you guys can hear. It's definatly not the transmission.

 

[99ex22]

Ok I got a sound clip...Its kind of hard to hear..

 

[fissionbait]

Sounds like power steering pump..

 

[99ex22]

Thats was my first thought too so I took the belt off, started it up and it still did it.

 

[Turdle]

It sounds like the torque converter-pump in the transmission to me--

 

[99ex22]

would it do it at idle and get higher pitched with higher rpm's though?

 

[99ex22]

if it can I think you may be correct. I crawled underneath it and it does seem to be the loudest in the torque converter area. If that is the case, is it something I should worry about?

 

[99ex22]

BUMP! Anything to worry about?

 

[99ex22]

bumpbumpbump

 

[97sprt4x4]

Did you ever figure this out? or did it go away... i need to know this as well because mine has started doing it sporadically. sounds exactly like your vid.

 

[jlsparky7]

It sounds like the torque converter-pump in the transmission to me--

That would be my guess too.


Maybe do a trans flush?

 

[99ex22]

97sprt4x4- I have yet to figure it out. The truck runs and drives like it always has if not better because Ive fixed alot of stuff on it recently.
jlsparky7- The transmission fluid, filter, pan gasket is brand spankin new (royal Purple Fluid) And has been changed every 30K since it was new.\

Any other thoughts?

 

[99ex22]

anyone else?

 

[BrianDye]

On the 95 im looking at tomorrow, theres a whine, and we figured it out to be the alternator starting to go.

 

[99ex22]

the noise is coming from under the truck though...