Jim Grant's Tech Tips
94 Honda
Accord, Many Warped Rotors
Q: I have a ‘94 Honda Accord 2.2L with auto
trans. I've had three sets of rotors go bad . I replaced the rear brakes
found the emergency cable out of adjustment but that has not fixed my
problem . I'm thinking that the proportioning valve is bad because the
rear brakes aren't taking their share of heat and the rotors are being
cooked. I don’t think there is any air in the system, the pedal feels
good. Is there anything I might have overlooked ? Your help would be appreciated
A: We’ve
found the hubs that the rotors are bolted to are not true (bent). Bent
is not the right word but it makes it easier to understand what is going
on with these vehicles. If the surface that the brake rotor is bolted
to is not true, the brakes will begin to pulsate and over time just get
more pronounced. Most often the fix requires machining the brake rotors
on the vehicle. The machines that perform this task will actually correct
for a small amount of hub runout during the machining process. Be sure
whenever the wheels are removed then reinstalled on your vehicle that
the lug nuts are torqued to manufacturer’s specification. Nothing will
mess up a good brake job any quicker than improper tightening of the lug
nuts.
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