few problems from my E46 325

[faizbizandry]

hi guys,I have few problems with my car and would like some advise from you all1) everytime i hit a bump or any unstable road such as zebra cross etc, theres a weird moto sound coming out of my car. but the sound will dissapear if my ABS light comes out..is it ABS issue??2) Sometimes, when i drive slowly, the car vibrates and no power. some of my friend says that its a vanos sensor. Some of them informed its because of the spark plug. Please adviseNeed you guys advise for above issue...thanks

 

[Hellraiser]

answer to #1 - its an ABS problem. have your ABS module checked asap. i had the same problem. my ABS module koyak.

 

[faizbizandry]

Thank you for your kind reply..how much it will cost me and where is the best place for me to go and check the ABS module thingy?