Need help with odd driveline noise/clunk - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 4 Old 10-05-2008, 01:41 PM Thread Starter
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Need help with odd driveline noise/clunk

I have a 2000 Gt with tremec tko 5 speed, I seem to get this odd noise/clunking when I am in gear cruising but not in the throttle. It seems to happen in the lower rpms as in 2000-3000 rpms. Again its not when I am accelerating but rather just coasting in gear, it starts bucking almost. It seems like my trans and rearend want to be going at different speeds and the driveshaft is trying to mediate. Rearend consists of metco adj uppers, maxiumum motorsports heavy duty lowers, coilovers with lakewood 50/50. Please help me find out what this is. Im willing to go somewhere if you know someone good with setting up suspensions
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post #2 of 4 Old 10-05-2008, 03:00 PM
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When it starts doing this, does it stop if you push in the clutch or kick it out of gear? What rear gear ratio, factory setup? Does it do it in only a specific gear (1st,2nd,3rd, etc)? Is the motor surging, thus causing this? Possible bad u-joint. Can you "feel" it or only hear it? Those aftermarket control arms amplify any vibrations.


91 notch, 408W, 10.5 comp, Jay Allen cam, Crane linkbars, Scorpion rockers, vic jr intake/heads, Canton pan, Mac longtubes, C4, UPR adj. uppers/lowers, Strange struts/shocks, subframe connectors, wild rides 6pt, Team Z k-member/anti-roll bar, MSD ignition.
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post #3 of 4 Old 10-05-2008, 05:32 PM Thread Starter
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Yes it does stop when I push in the clutch or take it out of gear. I just had the U-Joints checked about 300 miles ago and no change. You can feel it also and its embarassing
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post #4 of 4 Old 10-06-2008, 01:03 AM
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Common mustang driveline "clunk" Rear gears not setup tight enough can cause this to be worse than others. Backlash should be .008-.012"

My clunk was pretty bad too. Just had a new gearset put in, and set the backlash at .012", and the clunk is gone. The old gearset measured .024!!!

Cory Swinerton
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