Hi I've got a 2000 windstar, 45,000km. Over the past month when braking from highway speed to a off ramp you hear and feel in the pedal a "dub, dub, dub" sound which slows as the vehicle slows. A while ago I had an oil change and rotate the tires after that the sound started. I took the lug nuts off, torqued back to appropriate torque but the sound continued. Last night I took my dial indicator, removed the wheel and tried to determine if the rotor was warped. Now the indicator I have is one ususally used with a lathe so I can only mount in on a base which I set on the ground and then turn the rotor by hand. The indicator is not mounted on the van. The rotor according to my indicator seems not warped, but the symptoms persist. Could this rotor be warped even though I've found no warp? I did of course check both rotors and the sound is difinately coming from the front.
I have ~3/16 inch of brake pads on both sides of the rotor, driver's and passenger's side. 2 months ago (when I retorqued the tires after the oil change) I lubed the sliders on the caliper.
At 45 buck each I'm tempted to replace the rotors anyway to see if this will work, although I know replacing parts simply because that's what it seems to be isn't the best way to go. If I do replace the rotor, should I do the pads even though they have a fair bit of material left?
TIA
Cameron