2006 GT - A Little Clunky Between Gears

[Rokkaholik]

I've been noticing lately that my Mustang has a weird ca-chunk or clunk noise after shifting either up or down. It doesn't stay continuous and it doesn't sound like grinding in any way. Just a slight clunk what I would normally associate with a bad u-joint or rear-end gears getting sloppy. It's like something is just barely loose enough to be annoying. It also has a little bit of a whine almost as if there was a supercharger under the hood which there is not.

After doing a lot of searching and reading, it appears that the two-piece drive shaft in these cars is quite a turd. At first I was hoping I could get away with just a U-joint or something but it looks like now there might be more issues arising.

Options: fix current drive shaft or whatever piece needs it so I don't have to fight pinion angles and all that jazz

or

dig through pocket lint and scrounge up money for the Ford Performance one-piece I saw.

Pros or cons to either? Looking for specific stories/experience 05-09 mustangs

or

it's normal and just turn the radio up and ignore it?

ill try to get a video/recording of the offending noise

 

[GriffX]

I would try to find more info about the whine first. Rev or speed dependent? At acceleration, deceleration or coasting?
In any case driveline noises can be ignored a long time without problems.

 

[Rokkaholik]

Although I know how to drive manual transmissions, until I bought this 2006 Mustang gt, I had not driven a manual in over 20 years. I'm fairly mechanically inclined but manual transmissions are not in that wheelhouse

 

[07 Boss]

See if there is play in the carrier bearing for the driveshaft. Otherwise it's probably your upper control arm bushing on the rear end. This always gets overlooked because you can't visually inspect it without crawling under the car.

 

[Rokkaholik]

There is slight play everywhere, but the worst is the tailshaft of the transmission. When I twist the driveshaft I can hear it in the aluminum casing of the transmission... mechanic did say it's kind of common with these but to keep listening to it to see if it gets worse