Low oil pressure
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Joined: May 2006
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Low oil pressure
Pulled a load from LA to TX,(14,000lbs @70), with no problems, but noticed the next day the oil pressure stays low and erractic. Had the oil changed(didn't need it), but I am getting worried why oil pressure is low. Not the first load this truck has seen. Hopefully guages, any ideas, main bearings? (186,000 mi.).
Playing in the Dirt
Joined: Oct 2005
Posts: 2,302
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From: Southwest Georgia
Stock Gauge or Aftermarket? The stock gauges are NOT accurate. They send a signal to the PCM as the pressure changes and the PCM decides what signal to send to the gauge. After market gauges will give you a more accurate reading. Possibly a bad sending unit? Possibly an oil pump starting to go or worn mains? First step is to have it checked with a mechanical gauge to give you a true reading.
Junior User
Joined: Mar 2006
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I prefer the Rotella in any diesel. Especially my own. But the difference in oil pressure should not change with different brands. First thing I would do is have the oil pressure checked with a good gauge. Sound like you use yours for work. And you don't want to put an engine in it. At least if you check with a gauge you will elimate one or the other.
Have you been using Motorcraft filters? They have a built in check valve. Check the pressure first that way you can rule out a pump or bearing problem. Gauges are much cheaper to fix.
Have you been using Motorcraft filters? They have a built in check valve. Check the pressure first that way you can rule out a pump or bearing problem. Gauges are much cheaper to fix.
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