gmoran1469

Koni STR.T's
Steeda Sport Springs
Steeda HD Camber Plates
Steeda Billet LCA's w/ roto joints
UMI 1055 w/ roto joints
Steeda Adj, UCA
Urethane 3rd-link housing bushing
18x9.5 wheels
Roush CAI
93 Oct Brenspeed tune

So I have been having this loose feeling that I can replicate through throttle control and through working the clutch. At first I thought it was the rubber bushing for the 3-link but they've all been replaced with solid stuff and if anything it exaggerated the problem. I've been able to live with it thinking that the drop just caused a little slack somewhere in the drivetrain but lately it's been bothering me when I drive to work.

Scenario 1: Low RPM 1st-3rd, give it some gas, let off quickly. There is a very obvious slack lurch forward then a feeling like something catches and stops the car lurching forward. It's not a feeling of just the motor slowing the car down though, it feels like something is loose.

Scenario 2: Around 3.5k RPM, downshifting, if I let off the clutch early, the car lurches forward, as you would expect, but then bounces back and starts rocking back and forth till either the engine slows it down enough to stop or I give the car some gas.

I don't suspect the panhard because it's a forward and back movement, not an up and down movement of the rear.

I've check all the roto-joints, they are all good to go. I have the stepped spacer for the UCA to take up the slack that was apparently there with the factory bolt.

Any ideas?

I am gonna try to rig my gopro up under the car somehow to get some video to see what's going on.

ShaneM

unmetered air will cause weird things to happen. idk if that might be your issue, but check the connections for your CAI maybe the car is missing badly. on my 05 a dirty Tb caused some weird issues a few times.

gmoran1469

The engine isn't acting weird, running just fine. This feels like something in the drivetrain/suspension.

Andy13186

did you install all that at the same time or was it after any specific install that this started to happen?

gmoran1469

I wanna say it started after I lowered it.

I started with shocks/struts and HD mounts as well as CAI and tune, then panhard, then LCA and UCA

Andy13186

springs were with the shocks and struts right?

Seems like you did alot of stuff at once (springs, struts, mounts, cai, tune)

try loading stock tune and see if anything changes just to start ruling stuff out (depending on the CAI)

danzcool

Sloppy 2-piece driveshaft?

gmoran1469

That's my best guess at this point. Almost feels like dropping it put a "kink" in the driveshaft.


It's not the tune. I put it back to stock a few days ago and it's still doing it.

gmoran1469

Def think it's the DS.

Backing up in reverse, push the clutch in and there is a clunk, like the DS is in a bind then when I push the clutch in it slacks.

Andy13186

you could try getting an aftermarket driveshaft