1999 Dodge Durango Oil pressure

1999 DODGE DURANGO
195,000 MILES • 4.7L • V8 • 4WD • AUTOMATIC
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RRLUCE77
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My 99 Durango with a 318 V8 is completely dropping oil pressure. I have just changed the oil pump and cleaned the screen. Drove it to the store and still dropping pressure all the way to 0 psi. While your driving down the road the pressure is normal and up around 40psi but when you come to a stop at a stop sign or something it drops out. Then you hit this accelerator to take off and oil pressure goes back up to normal. Any help will be greatful! I have to leave from Texas to be at work in Virginia in two days!!
Sep 6, 2015 at 10:49 AM
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CARADIODOC
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This was a real common complaint in the '90s but I never ran into it on a 4.7L. It was caused by a defective oil pressure sending unit. The first thing you should have done was to measure the actual oil pressure with a mechanical gauge. If THAT showed low oil pressure, the first suspect would have been worn engine bearings. Oil pumps do not fail intermittently although a broken pressure relief spring can cause varying pressure.
Sep 6, 2015 at 8:19 PM