my car is knocking after the repairs are done

Asked by Mar 05, 2014 at 11:13 AM about the 2002 Lincoln Navigator Base

Question type: Maintenance & Repair

First of all, my car was broken on the freeway  and take the car to service shop and
they want to charge me $350.00 just for diagnosis and I refuse get a town at home.  
one my friends scan the car  and shows 2 misfire 3&4 .then I think is time to do the
service we replace the spark plugs and check coils , wires, oxygen sensors 2 new
ones. and later shows poor mix fuel and air.we replace regulator, filter still the pump the
oil change did before now don't shows any code and the oil light appearance on the
dash. give me your opinion please I appreciate too much . I am thinking can be the oil
pressure switch.

2 Answers

3,435

Is the car knocking like a bad knock or a really light ticking sound?

209,875

Or oil pump. Do you have any more codes?

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