My 05 GT has developed a suspected suspension problem, here is the symtom.
When going from WOT to coasting and back to WOT in 1st, 2nd or 3rd gear, the car seems to steer a bit, that is I have to make a small steering correction to stay straight (wheels not spinning). I think the axle is shifting forwards and backwards with the torque coming on and off.

I have BMR LCAs and adjustable panhard rod and I also have Eibach pro series springs.

I did a quick check last night and all the nuts seem snug, but tonight (now) I am jacking the car up and taking a serious look.

I do run autocross events, about 6 so far this year so the suspension does get "worked" from time to time.

It is possible the LCA bushings have come loose? Please post any suggestions. I will post my findings in an hour or so.

 

Problem solved. Turns out the axle was moving. I used an aluminum pipe and lightly pried the axle forwards and backwards on both sides and I was getting some movement from the passenger side. Not alot, but enough I guess.

I noticed there was a fair bit of grease squeezed out along the edge of all the bushings which gave me a clue. I pumped fresh grease into the bushings and now the problem is gone.

I don't remember reading in the instructions how often the bushings had to be regreased or what would happen if you didn't. Anyone out there read or know more on this?

I tore a torque box out of my old 89 5.0 years ago on the highway at 65mph towing a jetski. It had the same (but worse) symptoms just before hte suspension failed and immediately followed by a shower of sparks. Needless to say I was very nervous about my 05 when it started doing the same!!!

 

Problem not solved. See thread in performance mod section

 

closing topic since you already have one open in the performance section