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If your running the right oil then I wouldn't drive it and id be replacing that oil pump ASAP
 

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Sounds like you could just be low on oil or your oil pump is going out. I would start by checking your oil./
 

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:withstupid: Don't drive it until you determine the problem.
 

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...and check the sending unit. My pressure reading was low and would fluctuate (more than normal) as I revved the engine.

As it turned out, the top of the sending unit is plastic and had cracked away from the metal base allowing the top part to flex as I gunned the engine.

It's a bit of a bear to change and you'll need a sending unit socket.
 

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1) Verify the oil pressure with a mechanical gauge. If the oil pressure is normal replace the sending unit.

2) If the oil pressure is low, drop the pan and inspect the main/rod bearings. This a$$umes the proper oil and level are correct.

3) If the main/rod bearings look worn, replace them and polish the crank journals as needed.

4) If the mains look good, replace the oil pump.

:baby:
 

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On 2005-12-08 13:15, Mr Joe wrote:
1) Verify the oil pressure with a mechanical gauge. If the oil pressure is normal replace the sending unit.

2) If the oil pressure is low, drop the pan and inspect the main/rod bearings. This a$$umes the proper oil and level are correct.

3) If the main/rod bearings look worn, replace them and polish the crank journals as needed.

4) If the mains look good, replace the oil pump.

:baby:


:withstupid:

Dont trust gauges with electrical senders, most arnt accurate.. Even that aftermarket electronic gauges arnt, even though they say they are..

Only real way to know is to hook a mechanical gauge to it..

You figure 10 PSI for every 1000 RPM.. Idle should be a min of 7-10 PSI..

I bet your sender went bad, or a loose connection at the sender or at the gauge itself.
 

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ok update..........i installed a oil pressure gauge( mechanical ) and it runs 50 psi until it gets warm then it will run 25 psi on highway and 12 psi at idle....i still wasnt happy with that so i changed the oil pump, still having that prob but i did see some bronze colored metal shavings in the oil pan, so now im looking at replacing the engine....
 

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Yeah that old oil pump was probably failing which caused your bearings to wear prematurely. Its too bad you didn't catch that sooner :bluecry:
 

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Dont trust gauges with electrical senders, most arnt accurate.. Even that aftermarket electronic gauges arnt, even though they say they are..

Only real way to know is to hook a mechanical gauge to it..

:withstupid: That's why I bought a mechanical tranny temp gage.
 

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I had a problem with mine where I had good oil pressure, but it would just drop out and read zero for a minute, then suddenly go back up. I replaced the sending unit, the gauge, and checked the wiring, and it would still do it. I have good oil pressure, so it is something electrical. It hasn't done it in a long time, but it will sometimes do it with a fresh oil change. Just verify you have good oil pressure, replace the sending unit if needed, and if it still happens, learn to live with it. It really bothers me, but short of tearing the entire dash out, I've exhaust all my options. Mine has seemed to stop doing it for a while, but I'm not convinced it is cured. Damn Dodge trucks. :cuss:
 

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Bronze? Yep, sounds like bearings...might just have the engine rebuilt instead of finding another one.

If it wasn't knocking, I'd just put in new bearings and rings as long as everything looked ok when you take it apart.

steved
 

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