SUSPENSION - NOISE - "SQUEAK" FROM REAR SUSPENSION OVER BUMPS - COBRA MODELS ONLY
NOISE - "SQUEAK" FROM REAR SUSPENSION OVER BUMPS - COBRA MODELS ONLY
Publication Date: MARCH 30, 2001
A "squeak" may be heard on some vehicles from the rear suspension when driving slowly over speed bumps. This may be caused by the outer sleeve of the lower control arm bushing rubbing on the outboard sub-frame ear.
Install spacer washer between the inner sleeve of the control arm bushing and the inboard sub-frame ear. Refer to the following Service Procedure for details.
Raise vehicle on hoist and inspect both rear lower control arm bushings for signs of contact with the sub-frame ear (Figure 1).
If signs of contact are evident, install Spacer Washers (XR3Z-5561-AA).
Remove both rear wheels.
Remove the bolts from both rear exhaust pipe support brackets. Press out the remaining four (4) exhaust pipe rubber hangers and let the rear part of the exhaust system hang.
Remove the nuts from both lower control arm bushing bolts and pull the bolts back about 25mm (1") (just far enough to provide clearance so that the washer can be installed). DO NOT remove bolts (Figure 2).
Install spacer washers in front of the bushing as shown in Figure 2.
NOTE: THE CONTROL ARM BUSHINGS MUST BE NEUTRALIZED BEFORE THEY ARE TIGHTENED.
Push bolts back in and install nuts. Do not tighten at this time.
Tack-weld the washer to the sub-frame ears to prevent it from turning and causing a squeak (Figure 3).
NEUTRALIZING CONTROL ARM BUSHINGS
Place a tall screw-type jack stand at the front of vehicle under the front crossmember, just below the steering gear. Adjust the stand to make contact with the crossmember, but do not raise the vehicle (Figure 4).
Place an automatic transmission jack or screw-type jack under the lower control arm and compress the arm as far as possible without raising the vehicle off the hoist (Figure 5).
Torque the lower control arm bolt to 250 N-m (184 lb-ft).
Install wheels and road test vehicle to confirm the repair.
Spacer Washer (2 Required Per Vehicle)
OTHER APPLICABLE ARTICLES:
Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage