Question about 1989 Dodge Ram D-Series Pickups

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No oil pressure when idling, and climbs two notches only

When I am idling i have no oil pressure. when I step on the gas it takes a bit, but only climbs to about 1 and a half or two notches. the oil light comes on when idling but not when moving. is this the oil pump? wher is it? or is this a cloged oil filter? Please help, thank you very much.

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  • hoppyguy22 Jan 06, 2009


    I'm having a similar problem with low oil pressure. Heavy sludge was found in the oil pan. My mechanic says the oil journals are clogged in the head, thus affecting the pumps ability to pump. I'm investigating the next step. I've been advised to try using sea foam additive first, but others say basic additives will not solve the problem and recommend an expensive desludging procedure.

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Does it have the Mitsu engine? If so, check the specs. That engine only develops 12 pounds at idle. Should be about 32pounds at 2500rpm.

Posted on May 08, 2009

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Well first off you could change the oil filter but no garantees. i would say that the oil pump is going out. the best thing to do would be to drop your oil. but first if you can pressure wash the bottom of your motor so its clean. once you drop the oil your undo the bolts that hold your oil pan on. once you remove your oil pan you will see your oil pump. on the end of your oil pump should be a screen or a filter. check that to see if it is plugged. also when you take your pan off check on the inside of it to see if there is filings or large amounts of sluge. if you dont find any thing in the screen on your oil pump it is probably on the way out the door.they are easy to change and if your that far ya might as well change it and make shure to get a new oil pan gasket for when ya put the pan back on so as it doesnt leak. put a thin film of rtv silicone on it to hold it in place on both sides for when you put the pan up to rebolt it. i am not positive what the torque rate is for the pan bolts but they should be able to tell you that at the parts house. good luck!

Posted on Dec 18, 2008

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Well it could be bad oil pump or worn connecting rod bearing/main bearing or even worn journal or clogged oil ports.The system bypasses the filter if its clogged so its not the filter. Location of the pump in front cover where the chain is and its spun by the crankshaft. It right behind the crankshaft pulley/damper. Its not a very difficult job but its not that easy, its alot of work. Good Luck

Posted on Dec 18, 2008

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