Manual Trans. Thud when shifting

[skytop1]

Good evening David: I will call you tomorrow. Thanks

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[montreal ponies]

Let us know if this fixes your problem cuz it hasn't for others.

 

[highvoltage]

Wow need more dealers like that!!

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[lazarus870]

I have the tiny thud going into gear sometimes, but sometimes if I change from gear 1 to 2, or 2 to 3 in a spirited fashion there's a much louder THUD that almost feels like the car is being bumped from the rear. Anybody get that?
If I drive like a granny I just get the tiny thud. if I drive with a bit of speed to my shifts (not abusive) the transmission clunks hard going into gear and I feel a jolt from the rear.

 

[Zenkem]

Subscribed, I may have this problem but need to listen to the car a little more now that I know what to listen for...

 

[Hinds90]

Gone to the dealer Wednesday so the shop foreman can diagnose the issue. Would you guys recommend putting the clutch spring back in?

 

[skytop1]

The thud noise problem is caused by a poor design of mounting the rear diff in the IRS subframe. Impulse s energy from the transmission to the rear diff to the IRS subfrane and then to the main frame is the cause of the problem. You hear it a very low frequency reverberation thud of the subframe adn mainframe throughout the car. It is a single low booming sound emanated from the rear of the car. You will hear one thud boom for every shift. You don't have to be moving either. Standing still, just put car into gear and you will hear it. It doesn't happen every time due to how your sub frame is aligned. The initial impulse is generated by the spinning transmission input shaft through drive shaft to the rear.
Ford acknowledged the problem but outright refused to repair it. I ultimately researched and found the fix and had the repair done. Finally, no thud boom at every shift.

 

[montreal ponies]

The thud noise problem is caused by a poor design of mounting the rear diff in the IRS subframe. Impulse s energy from the transmission to the rear diff to the IRS subfrane and then to the main frame is the cause of the problem. You hear it a very low frequency reverberation thud of the subframe adn mainframe throughout the car. It is a single low booming sound emanated from the rear of the car. You will hear one thud boom for every shift. You don't have to be moving either. Standing still, just put car into gear and you will hear it. It doesn't happen every time due to how your sub frame is aligned. The initial impulse is generated by the spinning transmission input shaft through drive shaft to the rear.
Ford acknowledged the problem but outright refused to repair it. I ultimately researched and found the fix and had the repair done. Finally, no thud boom at every shift.

Care to share what you had done to your car !

 

[highvoltage]

The fix???

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[David@Steeda]

Care to share what you had done to your car !

He installed our differential bushing inserts which resulted in a substantial decrease and near elimination of the thud.

 

[skytop1]

The fix???

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Used Steeda urethane red bushing inserts on the mounting of the differential 555-4439
Used Steeda IRS subframe alignment sleeves kit. 555-4438
Had the car fully aligned after the installation.

I am very pleased with the Steeda parts and the excellent results.

 

[highvoltage]

Sweet thanks for this info

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[Ozzmosis86]

He installed our differential bushing inserts which resulted in a substantial decrease and near elimination of the thud.

Red vs. Black, can you share the pros and cons of each?

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[David@Steeda]

Red vs. Black, can you share the pros and cons of each?

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Sure, the red is 80 durometer and the black is 90 durometer - the higher the durometer (or stiffness), the better job it's going to do regarding preventing the differential from moving. The higher the durometer, the more likely you are to notice an increase in NVH - although you'll get increased performance as a trade-off.

 

[Knight5.0]

Sure, the red is 80 durometer and the black is 90 durometer - the higher the durometer (or stiffness), the better job it's going to do regarding preventing the differential from moving. The higher the durometer, the more likely you are to notice an increase in NVH - although you'll get increased performance as a trade-off.

Hey [MENTION=10893]David@Steeda[/MENTION] have you checked your PM's sir?

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