What is this clunk? How do I fix it??

[SoCaLCobra79]

I hate taking my car in to the dealers. Help me out here...so I need to the MM Bushings and the IRS 14mm bolts to help with the wheel hop? what about the clunking noise? right now my susp clunks when I back out of driveways.

Thanks for the help!!

 

[Crowley]

Originally posted by SoCaLCobra79
I hate taking my car in to the dealers. Help me out here...so I need to the MM Bushings and the IRS 14mm bolts to help with the wheel hop? what about the clunking noise? right now my susp clunks when I back out of driveways.

Thanks for the help!!

I think the 14mm bolts cure the CLUNK as well .. I need this too!!

Crowley

 

[SoCaLCobra79]

I hope so, it's getting worse!! I do not want to take it in to the dealer.

 

[Fresh Cobra]

Mine is the same and I'm hoping it'll change once I put on all of the IRS shyt I have stored up now...wish me luck...lol

~ Fresh :burnout:

 

[SoCaLCobra79]

This is interesting...

NOTE: It has been found that Ford had put the incorrect bolt in the front mounting holes for retaining the IRS subframe on some 2003 Cobras. The sleeve in the bushing and hole in the chassis are designed for a 14mm diameter bolt, however many cars had 12mm bolts installed incorrectly from the factory. If you have been noticing noise from the rear suspension, it may be caused by the subframe shifting due to insufficent retention with the smaller bolts. Verify the bolt size installed through the front IRS subframe mounts before ordering. If in doubt, or if you determine you need the larger bolts and corresponding nuts, the OEM replacements are available below. You will need two of each to do both sides.


from here:

http://www.maximummotorsports.com/mmirsu.asphttp://www.maximummotorsports.com/mmirsu.asp

 

[SoCaLCobra79]

New! IRS Delrin bushings for rear lower control arms

http://www.maximummotorsports.com/irsdelrinarmbushings.asp

 

[SoCaLCobra79]

TTT

 

[NC03BlkSnake]

Originally posted by SoCaLCobra79
This is interesting...

NOTE: It has been found that Ford had put the incorrect bolt in the front mounting holes for retaining the IRS subframe on some 2003 Cobras. The sleeve in the bushing and hole in the chassis are designed for a 14mm diameter bolt, however many cars had 12mm bolts installed incorrectly from the factory. If you have been noticing noise from the rear suspension, it may be caused by the subframe shifting due to insufficent retention with the smaller bolts. Verify the bolt size installed through the front IRS subframe mounts before ordering. If in doubt, or if you determine you need the larger bolts and corresponding nuts, the OEM replacements are available below. You will need two of each to do both sides.


from here:

http://www.maximummotorsports.com/mmirsu.asphttp://www.maximummotorsports.com/mmirsu.asp

That is exactly what happened to my 03. I took it in to Dale Jarrett Ford and they replaced everything for me. No more clunking. :rockon: