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2007 Mustang GT 4.6 Screeching bottom end or tranny

  • Thread starter Thread starter Prabh114
  • Start date Start date Mar 29, 2022
P

Prabh114

Member
May 28, 2020
13
3
13
Vancouver CANADA
Mar 29, 2022
#1
  • Mar 29, 2022
  • #1
2007 mustang gt 4.6 3v 5-speed manual

Sct tuned on 91 octane and cold air intake
New alternator installed
This screeching sound is coming

Clutch grabs good, gears don’t grind.

Don’t think it's the throwout bearing cause when I press clutch it doesn’t go away.

The sound doesn’t go away when I rev it.


When the car gets hot it also starts to hesitate under 3k rpm. Idle is choppy. Sounds like it's misfiring then. Throws codes p0340 and p0012
Oil pressure dropped twice for 1 second and then went back to normal. During a 100km drive.


I read in another thread it was someone's thrust bearing. Also saw a very light powdery metallic on the engine oil dipstick. Doesn’t seem like connecting rod material. The engine has no ticking or anything.

What could this be?



Vid 1
View: https://youtube.com/shorts/KkNElw9vIC4?feature=share



Vid 2
View: https://youtube.com/shorts/5mSy9cDVmPQ?feature=share



Vid 3
View: https://youtube.com/shorts/QWinVvca4eQ?feature=share
 

Dino Dino Bambino

15 Year Member
Jun 13, 2007
1,672
89
79
Cyprus
Mar 29, 2022
#2
  • Mar 29, 2022
  • #2
That's metal rubbing on metal, and my guess is those components are the separator plate and flywheel. There's a TSB with a simple fix for this issue:

https://www.google.com/url?sa=t&source=web&rct=j&url=https://latemodel.cachefly.net/downloads/tsb05-14/tsb09-18-16.pdf&ved=2ahUKEwj054qX3ur2AhVcQ0EAHQs1D1IQFnoECAMQAQ&usg=AOvVaw1AeElsge6DtDkYuM7Txwex
 
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