Question about 1999 Dodge Ram

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My 1998 dodge ram 4x4 is dropping oil pressure, I replaced the oil pump but it is still dropping to 30. any suggestions?

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  • Dodge Master
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I'm assuming that pressure is at an engine speed of 1500 RPM or more. You could have excessive clearance in the main, rod and/or cam bearings. No easy way to check.

Posted on Apr 11, 2011

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My 1998 dodge ram 1500 with a 318 enine oil pressure drops to zero after 15 minutes


change the oil preasure switch ive seen this 100 times all i drive is dodge trucks and ive had this problem on every on ive owned after 1998 and above

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I have a 1998 Dodge Ram pickup 360 5.9 with low oil pressure problems, it drops to 0 at idle and will raise back up to normal (35-50) when rev. up, when i take off it will raise back up and then drop when...


wow first thing i would do is get that 50w oil out of that engine, as you are straining that new pump. i would compare that to trying to drink syrup through a straw versus water. i wouldn't go any more than 20w-50 and is pretty heavy, 10w-30 would probably be your best bet. as for the low pressure i would check the pick-up tube screen to make sure it is clear and free of restriction, make sure you have the correct oil filter installed, and correct oil level. if there is a knocking sound heard you likely have worn rod bearings. if you need to further dianose you may want to check the oil passages from the cylinder head going down to the oil pan and make sure they are clear and there is no sludge in the engine, this can be done by removing the valve covers and making sure oil is being pumped to the top of the engine while running but use caution as this can get messy, maybe use cardboard to keep oil in cylinder head and from spilling out on to exhaust manifolds. hope this was helpful if so please rate 4 thumbs up.





Feb 17, 2011 | 1998 Dodge Ram 1500 4WD

1 Answer

"Check your gauges" light come on when I come to a


you are low on oil in the engine- brake hard and watch the pressure gauge it will drop also---you are at least 3 qt's low.

Jan 01, 2011 | 1998 Dodge Ram 1500 4WD

1 Answer

2001 dodge ram 2500 v10 oil pressure drops to 0 then back up


you need to put an oil pressure gauge on it and see what happens.what you will find is that the sender unit is no good.

May 18, 2010 | 2001 Dodge Ram 2500 Truck

1 Answer

1996 Dodge Ram 1500 5.9L with 93K. Oil dummy


I had the same problem and ended up changing the oil pump and it did not fix it. (Peace of mind anyway and it was cheap) I replaced the pressure sensor (that happens to be tucked in deep between the back of the engine and firewall) and the pressure gauge worked just fine after that.

Jul 30, 2009 | 1996 Dodge Ram

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1996 DODGE RAM 1500 LOSES OIL PRESSURE AFTER WARMED UP FINE WHEN FIRST STARTED WHY?


There are several reasons. The oil viscosity can make a difference and if the oil is contaminated with fuel. Wear in the oil pump and all of your bearings starting with the main crankshaft bearings and the connecting rod bearings. The wrong or bad oil filter.
When cold oil flows it plugs leaking bearings and oil gears. When the oil warms, the wear in the bearings (gaps) can't hold back the thin oil and the pressure drops. If the bearings are replaced before the crank and cam are damaged, the pressure will be maintained.

Jul 07, 2009 | 1998 Dodge Ram 1500 4WD

1 Answer

Oil Pressure Suddenly Reading in High and Low Ranges


either the oil pressure sender is defective or the pressure relief ball valve in the oil pump is sticking, my money would be on the oil pump pressure relief valve ball sticking.

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