If they find that the oil presure is indeed low, the next step is to pinpoint the cause of the low pressure. Low oil pressure can cause severe damage to an engine. In fact if the oil pressure is very low, you may often hear knocking or tapping noises in the engine.
Low oil pressure can be caused by any number of mechanical problems in the engine and I can't tell you right away how much it will be to fix it when the cause is not none.
The most common cause is worn bearing insert.
It could be just a worn oil pump, a leak in the oil pick up tube.
I have a question.
How is the oil level in your vehicle?
Do you hear knocking or tapping noise when driving your vehicle?
How did they come to a conclusion of build up and sludge?
Did they clear the code after replacing the oil switch?
Sorry to answer questions with questions.?
Saturday, January 6th, 2007 AT 3:10 PM