Question about 1999 Dodge Ram

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Losing Oil Pressure in Dodge Ram

Hello, I am suddenly, but briefly, losing oil pressure in my dodge ram pickup. As I am coming to a stop while driving, the oil pressure gauge suddenly falls down to 0, then the check gauge light comes on, but only for about 2 seconds before it rises sharply back to where it is supposed to be. What is the problem and how serious is this? Am I actually losing oil pressure or is there a problem with some kind of sensor? Thanks.

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  • stevenklein8 Mar 24, 2009

    I have a 1999 dodge ram with a 5.9liter. Come to a stop and bam no pressure. Replaced sending unit twice. First after market, then mopar. Problem is still there. Replaced pump. Problem was still there. So I talked to tons of dodge mechanics, and this is the real problem. Who ever said that these engines are none for sludge is just reall really stupid. BOTTOM LINE ON THAT FACT. Sludge comes from neglect...

    Dodges oil pump makes 8-10 Psi at idle. Always mechanically test that no MATTER what. But the sending unit needs 12-14 psi to read it. So what happens is the engine warms up, and the oil thins. Then you come to a stop, and rpms are low, and your not producing enough psi for the sending unit to read it. So your truck is fine. But if the chime is getting to you. Install a high volume pump. I returned the stock one, and got the high volume pump. I will bet if you change your oil every 3,000 miles you will not see sludge at all. If your dodge has high miles replace valve cover gaskets, becauce the high volume pump may cause the gaskets to leak. Whoever said ther none for sludge just has no love for a dodge, or is a moron mechanic that is stuck in his ways. High volume pump is the fix $85.00 plus pan gasket. If you have a 4x4 you can do it yourself. Drop the starter. Remove torque converter cover. With a 13mm socket with a variety of extentions, and removing a dozen bolts. Do it yourselfer will complete it in 4 hours....

  • Anonymous Mar 15, 2014

    Losing oil pressure and oil light coming on but no engine noise

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I have a 1999 dodge ram with a 5.9liter. Come to a stop and bam no pressure. Replaced sending unit twice. First after market, then mopar. Problem is still there. Replaced pump. Problem was still there. So I talked to tons of dodge mechanics, and this is the real problem. Who ever said that these engines are none for sludge is just reall really stupid. BOTTOM LINE ON THAT FACT. Sludge comes from neglect...
Dodges oil pump makes 8-10 Psi at idle. Always mechanically test that no MATTER what. But the sending unit needs 12-14 psi to read it. So what happens is the engine warms up, and the oil thins. Then you come to a stop, and rpms are low, and your not producing enough psi for the sending unit to read it. So your truck is fine. But if the chime is getting to you. Install a high volume pump. I returned the stock one, and got the high volume pump. I will bet if you change your oil every 3,000 miles you will not see sludge at all. If your dodge has high miles replace valve cover gaskets, becauce the high volume pump may cause the gaskets to leak. Whoever said ther none for sludge just has no love for a dodge, or is a moron mechanic that is stuck in his ways. High volume pump is the fix $85.00 plus pan gasket. If you have a 4x4 you can do it yourself. Drop the starter. Remove torque converter cover. With a 13mm socket with a variety of extentions, and removing a dozen bolts. Do it yourselfer will complete it in 4 hours....

Posted on Mar 24, 2009

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These engines are bad for sludge build up. It causes the oil to drain slowly back into the pan. When stopping the oil is actually going towards the front of the oil pan and away from the oil pickup screen. This problem cannot correctly be fixed without tearing down the engine for a rebuild.

Posted on Mar 05, 2009

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Dear StevenKlein8:

Please move to Chicago, and be my mechanic.

Posted on Mar 22, 2012

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TO START INSTALL A MECHANICAL GAUGE, THAT WAY YOU CAN SEE IF YOU ARE REALLY LOSING OIL PRESSURE OR NOT. YOU CAN INSTALL IT IN CONJUNCTION WITH THE SENDING UNIT,SO YOU HAVE BOTH . WATCH THE GAUGE WHILE DRIVING AND IDLING TO SEE IF THE MECHANICAL GAUGE ALSO SHOWS LOW PRESSURE. NORMALLY IF YOU LOSE OIL PRESSURE THE LIFTERS WILL START TO RATTLE

Posted on Dec 09, 2014

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My 95Dakota sport 2.5L is spouting oil from the oil switch. My gusge was going crazy and oil light was coming on. I knew that I had a leak and tried to seal it up, not a good idea. Look for a leak down on the drivers side near the bottom side of block. You can check it from sliding beneath truck@ driver side door. Have a light available and jack stand the front end at least. Look for any leaks or lose wires/bolts/fittings

Posted on Nov 21, 2014

  • charles
    charles Nov 21, 2014

    If it is a l swich leak, is will leak consistantly (drip or pour) while engine is on. Check your oil level first, you oil sensor may be faulty

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