Car's making weird noise..HELP!!!

After warming up the engine in the morning..I drop down to D4 and it would make this weird clogging/cracking sound while applying the brake...the noise would still be there for as long as I'm idling in D4...after driving for awhile the clogging/cracking sound is reduced but the engine vibrate a little bit harder than normal.

This problem all started after I accelerate over a large ditch on the road.

No CEL no nothing..just weird noises in idle.

Also, my car's radiator is kind of loose and the weird clogging/cracking noise came from somewhere near the distributor/battery.

I also had new spark plugs and wires installed 2 weeks ago.

If anyone know a solution to the problem..please help. Thanks