xero

hello i am back.

the saga continues ... i will try and keep this post as breif as possible.

recently my suspension control module went out. as my car is out of warranty i took it to the great folk at Scientific Automotive in Pasadena CA. a great group of guys to work with. they ordered and installed the part but found that they were unable to re-calibrate. so they sent to the dealer where is was discovered that the pump was out and was unable to maintain the required pressure. once i received the car back the ride was noticably different then when i had taken it in. (much harsher ride) with in a couple of days i noticed that there was a wobble that would begin @ around 40-45 mph. doing research on the forum my first thought was that the transmission control module was now out. so i took it back to my guys who could not recreate the wobble. i have come to notice that sometimes it is very bad and sometimes barley noticeable. my mechanic said that the front axels had more play in them then they would like to see and that this may be the source of the vibration. i had noticed that the car had a slight lean. so this weekend i measured all 4 corners and found that the car (groun to fender) was 3/4 lower on the passenger side. as the deal reset and calibrated the car i cannot blame my mechanics.

questions:
could this be the cause of the wobble?
how sensitve is the car to being uneven?

any help would be GREATLY APPRECIATED

thanks,
xero

want

Just hang up the car, shake the inner CV & the outter CV of the axle slightly by hand. You should can feel the gap in the CV.

xero

yes, i do notice that when i accelerate i get the wobble, when i lift my foot of the gas it goes away. would the fact that the care is not level make things worse?

thanks in advance
xero

want

I don't think that the car leveling will affect the wobble. Maybe I am wrong.

paulroad

The dealer shoudl re calibrate the height at N/C. BUt you need to have your lug nuts checked for proper torque, and the CV joints as well.

dejavu

on acceleration when I had the allroad on a "rake" setting with the 402 mod. The stance was .5 inch lower up front than the rears. There was a lot more shudder with this set up. The shudder was a bit less when all corners were even.

greenmeanie

The hand check is a good place to start as it is cheap and easy. The real way to check them is with at least the hub end disconnected from the car. If you are unwilling to disconnect them from the hub at least jack the car up on stands so that the wheel is free to spin. By the time you can move the joint around by hand with the wheels on the joint is fairly far gone.

When I removed my axles for replacement they felt fine on the car but once removed the inners showed enough play to generate the vibration problems.

Cheers
Gregor