What is a PVC Valve?
Whats a pvc valve and where is it? I have trouble withmy engine reving to high when at the lights so I bypassed the ISC motor and run the air inteke manualy, but the problem still occurs when I hammer the car and come to a complete stop. It revs up to 1200! Long back I crossed the water cooling sensor with resistors and got a cabin full of black smoke since then I have had this problem, is there a way to fix this plus just last night a started geting this rumbling noise when I start the engine as if there is a screw in the engine being tossed around it stops when driving but should I be worried?