Re: "Click/Clack" noise in front end
Perhaps a faulty ABS sensor. If it's very moist (fog or raining conditions) the brakes can grab sometimes with very minimal pressure on the pedal. Or, in cold weather if the vehicle sits for a few days it can also have a grabbing sensation with some noises.
The noise might also be attributable to either the outer or inner pad touching the brake rotor first, which is the noise/click you might hear, before the other pad grabs. If you're light on the pedal you won't feel this although the vehicle may react differently and put more braking force on one wheel tricking the ABS sensor to think that there is slip.
Try this or not is up to you, but under the hood you'll have a high amp fuse/relay for the ABS system. If you remove this, it will trigger dash lights and some other electronics might not work, so do this on a side road where traffic is nil. Then drive it and slowly apply the brake. If there is no noise then ABS sensors are your culprit. Not in all cases will a bad/faulty ABS sensor throw an engine code. I did this in my Durango and was told by two separate shops that my calipers are just 'old' and the cold weather affects fluid flow (blah blah blah), but it only lasts for the first couple pushes on the brake pedal in the mornings and all my sensors tested fine.
If you have an AWD version, I'd get the front axle/transfer case inspected and make sure fluid levels are where they should be.
'00 Durango R/T 360ci 290hp (modded); 138,500m
'06 Pontiac G6 GT 3.5L 220hp; 44,000m
'12 Chrysler 200 Limited 3.6L 283hp; 13,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!