1989 Plymouth Voyager mileage: 97,000. The oil pressure drops when engine is accelerated or while it shifts down from overdrive. I have replaced the Oil pressure switch or oil pressure sending unit & that has not changed things. I have not had the oil pressure gage checked. When it is idling, oil pressure is good. What is my problem and where does it lie? I would like to fix this myself.
Oct 28, 2010 at 11:45 PM