Hi All, my truck has recently presented a new issue.  The oil pressure reads rather high, mostly all the time on the gauge on the dash.

 

I'm thinking the oil pressure sensor could be failing, but I would rather make sure my oil pressure is correct.

 

The bad news is I'm about 200 miles away from home for the next week and don't have my service manual with me (doh!).

 

The good news is I have access to tools so I may be able to solve this while I'm here.

 

I have a mechanical oil pressure gauge and was thinking about testing the pressure first before making assumptions, does anyone know if anyone posted an article about how to properly run the mechanical oil pressure test on my 2001 5.9?

 

Also if it is the sensor does anyone have any thoughts on the best replacement part to get with?  Are there any good lower price aftermarket units or...?

 

Thanks in advance for the help.

What I have read backs this up. At start up when the pressure reaches about 6 psi it either opens or closes the switch, I think it opens it, then the pressure reading is based on ect and rpm. It does good job of mimicking a real pressure gauge. Fooled me for years.  

1 hour ago, AH64ID said:

even some earlier models have software upgrades that treat the transducer as a switch. 

 

That is the software part I will agree on your right.