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Oil pressure issue
I really hate asking questions and I especially ask hating stupid questions or ones that have already been answered. However, I have searched and searched and what I have going on just doesn't make any sense.
I have a late 2000 F350 7.3l with only 120k miles.
My oil pressure seems to be dropping on acceleration and at high RPMs. Everything I read says that the oil pressure gauge isn't really, it's just a switch on and off. But, the normal reading on the gauge is about 3/4 up and, when this started, when I pressed the accelerator it would drop to about 1/4, hold there and go back up when I let off the acc. Now it seems to bounce around the low end but it isn't acting like just an on-off thing.
At idle it tends to show normal, but, it does seem to be indicating low more and more, even at idle.
I have read that since the injectors rely on oil pressure to run that if the actual low pressure side were consistently as low as indicated the vehicle shouldn't actually run at all. That seems to hint at a sending unit rather than an actual pressure issue.
So, the questions ...
Can anyone explain why my "gauge" has been acting like this if it is actually just a switch?
According to my Chiltons (which, when it has anything hasn't let me down yet) the sending unit is located on top just in front of the tranny. That would put it under the turbo but I can't seem to find it. Any hints on where the sensor is actually located? Am I reading this wrong?
I really think I need to test the oil pressure with an actual gauge. Any suggestions on the best place to connect to do that?
And, of course, any other guidance would be appreciated.
Keith
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