specops_SC
Registered User
ok, heres the deal. today my car started making this knocking sound. my first thought was spun rod bearing. then a piston rod knocking, then detonation, then supercharger coupler. rod bearing it isnt. oil is clear and the knock goes away when under load or when revved higher. the same for the piston rod knock and detonation. it was a slow steady knock so it cant be the supercharger, which spins at about 3 times the engine's rpm. now here's where it gets interesting. i cannot hear it in the engine bay or underneath the car. AT ALL!! i can only hear it from inside the car. it does it in every gear when im under about 1300 rpm and its very pronounced at idle. it sounds like its coming from the transmission area, but i cant think of what would cause this sound. no other problems at all, except for my cam sensor. i think thats going out because occasionally it'll show my idle at 500 rpm, and when i give it gas and let off, the needle is really jerky between 1000 and 2000 rpm. anyone??