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V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters
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Old 12-05-2011, 09:14 PM   #1
joeyv12
 
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Default Squealing noise from engine

my 96 3.8 is making a squeeling noise after it warms up. it sounds like it is coming from the left side of the engine. i have changed the harmonic balancer, the alternator, the water pump,the power steering pump and the cam shaft sensor and it is still there.When i shut the engine off i hear a hissing that sounds like a big air leak.The noise almost sounds like it is in the engine itself.This enginer has 3000 on a rebuid. Any suggestions would be appreciated.
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Old 12-06-2011, 08:54 AM   #2
desertt5
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Have you tried to use a mechanics stethescope to narrow it down? Also remove the belt on front and see if it goes away. Did you replace the entire cam shaft synchronizer or just the sensor mounted on top?
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Old 12-07-2011, 12:24 AM   #3
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no i haven't done that yet but i replaced the power steering pump and lines tonight,after completing the task i took the car for a ride to get it to operating temp,when i returned to my garage that noise was back. I noticed that when placed in park the noise stopped. It started again when i put it in reverse and drive it stopped in park and neutral. The tranny was also rebuilt with the engine.
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Old 12-07-2011, 12:28 AM   #4
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the noise is a cylical chirping
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Old 12-07-2011, 01:49 PM   #5
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That is what mine sounded like.

Did you replace the entire cam shaft synchronizer or just the sensor mounted on top?
If it was the whole synchronizer, what brand?
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Old 12-07-2011, 07:14 PM   #6
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yes i changed the entire synczr,i think i got it from autozone don't remember. The noise only starts when car is placed into gear, it slowly stops if put in neutral or park, but does reappearn when you shut the engine off, you hear the squel slow down to a stop.
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Old 12-10-2011, 02:17 PM   #7
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i just found out that the noise is coming from the tranny bellhousing right about where the torque converter is,this has been replaced a couple of weeks ago, any ideas would be appreciated.
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Old 12-10-2011, 05:59 PM   #8
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Quote:
Originally Posted by joeyv12 View Post
i just found out that the noise is coming from the tranny bellhousing right about where the torque converter is,this has been replaced a couple of weeks ago, any ideas would be appreciated.
Did the torque converter get bolted back to the flywheel? Also, if the TC was replaced, did you make sure the converter was seated all the way onto the trans?
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Old 12-10-2011, 06:01 PM   #9
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Take it back to whoever replaced it to start....
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Old 12-11-2011, 12:58 PM   #10
joeyv12
 
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I replaced the TQ myself and yes it was installed properly. I changes it on the advice of a tranny shop mechanic. The noise was there before i replaced it and still remains, what other bearings or part is there that would squeak? Is it internal tranny maybe, i did not rebuild it.
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Old 12-11-2011, 12:58 PM
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2000, 2012, engine, ford, motor, mustang, noise, power, side, slight, squeaking, squeel, squeeling, startup, steering, v6

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