Chirping Noise Coming From 4.0

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Oct 26, 2013 | 09:35 AM
  #1  
I'm getting this exact sound:


Does anyone have a clue what would be causing this?

When you press the gas pedal, the chirping gets faster. It happens both when idling and when driving, and seems to be intermittent.
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Oct 26, 2013 | 09:45 AM
  #2  
ac compressor or other pulley?
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Oct 26, 2013 | 10:38 AM
  #3  
Quote: ac compressor or other pulley?
It's coming from the motor itself. Sounds like it's coming from the rear of the motor.
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Oct 26, 2013 | 10:50 AM
  #4  
check this video.
http://www.youtube.com/watch?v=cW_wpE3hG5k#t=84
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Oct 26, 2013 | 10:51 AM
  #5  
Quote: It's coming from the motor itself. Sounds like it's coming from the rear of the motor.
from all i cn gather maybe the CPS or synchronizer for tranny. ax-15?
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Oct 26, 2013 | 07:47 PM
  #6  
Here's what you need.

Chirping Noise Coming From 4.0-mech-steth.jpg  

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Oct 27, 2013 | 09:55 AM
  #7  
Quote: check this video.
http://www.youtube.com/watch?v=cW_wpE3hG5k#t=84
No.. it's not a belt. The noise isn't coming from anywhere near the front... it's in the back like I said.

Quote: from all i cn gather maybe the CPS or synchronizer for tranny. ax-15?
I've got the AW4.
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Oct 27, 2013 | 02:26 PM
  #8  
sounds like the idler pully for the serp belt. remove the serp belt start the motor and see if the noise goes away. check for play in the pully when you have the belt off.
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Mar 18, 2014 | 08:35 PM
  #9  
Ever fix this problem? Mine is doing same thing. 90% sure its a rocker arm making the noise due to something blocking oil flow through a pushrod...
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Mar 18, 2014 | 08:38 PM
  #10  
This problem was fixed with a new distributor
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Mar 19, 2014 | 02:41 PM
  #11  
Mine ended up being a rocker arm.

Took this video today.

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Mar 19, 2014 | 05:09 PM
  #12  
Shut that sum***** off and find out why there's no oil coming up to the rockers!!!
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Mar 19, 2014 | 05:33 PM
  #13  
That's what I was thinking, those rockers should be covered in oil. Something is wrong there.
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Mar 19, 2014 | 11:38 PM
  #14  
Quote: Shut that sum***** off and find out why there's no oil coming up to the rockers!!!
Quote: That's what I was thinking, those rockers should be covered in oil. Something is wrong there.
Agreed! Either your lifters are shot or the pushrods are plugged to where no oil is getting pumped up to the rocker fulcrum. Thats your squeaking problem.
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Mar 20, 2014 | 12:07 PM
  #15  
Quote: Mine ended up being a rocker arm.

Took this video today.

https://www.youtube.com/watch?v=iTPQp_SF_rc
Interesting. That sounds very similar to the chirp I was having, but it's not the same tone pitch.
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