Oil Pressure Issue.
#1
Oil Pressure Issue.
Hey Y'all, I have a 1998 2500 heavy duty. Its the D vin with Manual and 4x4, Quad cab, Long Bed. At unpredictable and unexplainable times My stock OP gauge shows no pressure and I get a check gauges light comes on the dash. I can gun the accelerator or just let it idle and in will jump right back up to around 40. I have gone through a bunch of stuff with this 2.5 month old purchase with 336K on the mile counter. I doubt its the pump I mean they are Melling gearotor and good for 800kmi. There is an ambiguous reference in my dealer service manual to a oil cooler element and oil pressure regulator. I have drilled through a bunch of posts but I just cant take it. is there any other resource with more detail or has anyone actually seen it. it says to blow compressed air through it but not where. I am wondering where this cooler is and the regulator too. my injector pump overflow valve was weak and I suspect that maybe this regulator is too or the cooler element is clogged up. please have mercy on a newb.
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Mine does the exact same thing. The gauge was just plain dead for about a hundred thousand miles, then it started doing that. Like, all the damn time, out of nowhere. I found the plug for the sensor was messed up, and bought a new pigtail. That helped a lot, but it still does it sometimes. I got a new sensor but haven't been motivated enough to change it yet, usually I can't hear the bell over my stereo so it doesn't bother me often. It's been doing this for oh... at least fifty thousand miles now. I know the pressure is good.
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NEWBIE 98 (03-11-2013)
#10
It was the Oil Pressure Switch. Replaced it yesterday and the Check Gauges light only comes on at start for a second or so until you have pressure. I learned in the process that the "sensor" or "sender" for the Oil Pressure is a switch and that the pressure is calculation ginned in the PCM in correlation to engine speed magnet counter. Its not a true pressure reading in any way. Hunh, Go figger.
Thanks for the comments. I used a Duralast part from AutoZone. I tried to go to Cummins cause it was $20 cheaper but they only had an improved type that had to be wired into a different pin in the PCM. And, Cummins cant even tie their shoes without a ESN. My ESN is MIA. As far as Dodge goes I want a car part not hedge the stock market.
Thanks for the comments. I used a Duralast part from AutoZone. I tried to go to Cummins cause it was $20 cheaper but they only had an improved type that had to be wired into a different pin in the PCM. And, Cummins cant even tie their shoes without a ESN. My ESN is MIA. As far as Dodge goes I want a car part not hedge the stock market.
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