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I would need to hear the noise to give you any idea of what is causing it. Have a local dealer or trusted shop go for a ride with you, in may cases this is not charged for.
Ticking sounds like a dry lifter, when was the last time you changed the oil and filter? Humming sounds like you need a tire rotation because of uneven tire wear.
This noise is called pinging (preignition) this can be cause by carbon build up on pistons and valves or EGR SYSTEM NOT OPERATING CORRECTLY . and last low octane gas or engine running hotter than normal,
It sounds like it does this while under a load, like going uphills, i would have the egr system checked, being a 2000 escort i would think the computer would pickup on the egr system not working and turn engine light on. This could also be caused by bad o2 sensors setting fuel mixture at a lean condition. good day
Sounds like an Exhaust Manifold leak on only one cylinder. The Gasket is probably blown out. Check around where manifold is bolted to the engine. Any leaks are usually evident by a black sooty deposit.
difficult one this without haveing a drive in car to hear the noise,this sort of sound could be caused by the flex plate on the crank/torque converter,break on edge of fan belt,power steering pump,altenator bearing,evan the transmission possibly a pump,or could it sound more a sort of electro mechanical noise ?? without hearing it its very difficult to diagnose .
the exhaust was always good for making noises under hard driving as it expands with heat than contracts under cooling but like carlo says more info required
sounds like the problem is brake related. That ticking you're hearing is your front brake rotors, clicking against the sides of the brake caliper. As you speed up, the clicking will get faster untill you won't be able to hear it, (it's still there, it's just inaudible at such a rapid revolution) upon deceleration, you will notice it more prominently, clicking in rhythm to the speed of your wheel's revolution.
basically, It indicates your brake pads are worn down. Unfortunately the condition will get worse, louder, and the car will become extraordinarily more dangerous to drive as front braking will be compromised if the vehicle's braking conditions persist.
A qualified mechanic will setup the brakes, rotors, check for warpage, hone the rotors if need be, and be able to install a proper replacement pad.
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