hello. this is my first post on this forum. I change plugs, oil and filter, air filter, micro filter, water pump and coolant. First i take battery out and then i take intake manifold off. I change plugs and water pump then give intake manifold back and conect battery. then i change all filters, oil and coolant. when i was finished, i start the engine and it works good, but when i was trying to change gear from P to R or D it has move nowhere. Can anyone help me?