New Rotors. Same problem?
#1
Driver
Thread Starter
Join Date: Dec 2003
Location: Alabama
Posts: 101
Likes: 0
Received 0 Likes
on
0 Posts
New Rotors. Same problem?
I just replaced the front rotors on my 98 GS400 for the second time in three months. I replaced the first time with Brembo blanks because the old ones seemed to be warped. Three months later and the Brembos are pulsing too. I'm concerned that the new ones are going to do the same thing. I noticed that the passenger side was dragging in spot and the drivers side seemed to drag a little on the whole disk. By "dragging" I don't mean so much that it's difficult to turn the hub by hand without the wheel on. It also seems to pulsate slightly when stopping during the test drive. Am I wrong to be concerned.?
#2
Maintenance Moderator
iTrader: (2)
you need to mount the rotor on the hub, and measure the runout of the rotor itself... you should have less than .002" of runout... Variances in the hub, a dirty or corroded hub, and sometimes even not tightening lug nuts properly can all cause this issue... you should also check the wheel bearing for play, as this can cause that as well...
#3
Driver
Thread Starter
Join Date: Dec 2003
Location: Alabama
Posts: 101
Likes: 0
Received 0 Likes
on
0 Posts
you need to mount the rotor on the hub, and measure the runout of the rotor itself... you should have less than .002" of runout... Variances in the hub, a dirty or corroded hub, and sometimes even not tightening lug nuts properly can all cause this issue... you should also check the wheel bearing for play, as this can cause that as well...
#5
Driver
Thread Starter
Join Date: Dec 2003
Location: Alabama
Posts: 101
Likes: 0
Received 0 Likes
on
0 Posts
#6
Maintenance Moderator
iTrader: (2)
certain bedding procedures call for rotor temps high enough to make the rotors glow, if you were to stop the car using the brakes and leave the brake pedal depressed in one position once stopped, it could cause a high/low spot...
other than that, shouldn't matter..
Trending Topics
#10
Maintenance Moderator
iTrader: (2)
I highly doubt it's ABS related...
try having the rotors turned on the car, see what happens... I almost bet, even though you currently don't have much runout, that it gets better / is fixed...
if it's not the rotors, and it's only when you brake, the only thing else it could be would be like ball joints, severely loose tie rods, etc...
Have you checked the rears? It is possible for them to produce a pulsation as well...
try having the rotors turned on the car, see what happens... I almost bet, even though you currently don't have much runout, that it gets better / is fixed...
if it's not the rotors, and it's only when you brake, the only thing else it could be would be like ball joints, severely loose tie rods, etc...
Have you checked the rears? It is possible for them to produce a pulsation as well...
Thread
Thread Starter
Forum
Replies
Last Post
diamondmit
Suspension and Brakes
7
06-06-07 09:36 AM
diamondmit
Suspension and Brakes
2
06-06-07 05:42 AM
tmorales
LX - 1st and 2nd Gen (1996-2007)
4
04-05-04 10:23 AM