Oil pressure spike

[Stevev]

Out and about today notice my oil pressure at 90psi
when it usually runs 50-60 little higher when engine is cold
if I start to unscrew wire on sending unit
seems to jump around as soon as I touch it
is there a ground somewhere for it?
if I start the engine and turn it off and restart
seem to get different reading
truck runs and sounds normal
should I change the sending unit?
if so should I find the original part or is there a generic one I can replace it with
thanks for your help

 

[Dock Rocker]

Trust a military gauge like gas station sushi.


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[Andyrv6av8r]

Go with a mechanical gauge both oil pressure and water temp.

 

[Stevev]

Thanks for the help
not sure what gauge’s to get
What do you recommend a mechanical
gauge
is there one that will fit in the current holes in the dash?

 

[Bulldogger]

Plumbing in a cheap mechanical gauge will give you some reassurance’s about true pressure. It is up to you whether to keep it n or not.
You most likely have ground issues and/or a bad sensor or gauge, or all three since our trucks are old enough to have multiple faults.
I recommend installing an inexpensive mech gauge and then checking ground, then pulling the sensor and cleaning it and checking it’s wiring. The problem , if it’s not engine related, should be gone by the end of those steps.
Bulldogger

 

[Andyrv6av8r]

Use whatever your budget will let you. I've used Stewart Warner, Autometer, Bosch, Sun, etc with good results. Any 2" gauge will fit.

 

[Stevev]

Thanks for the advice
I’ll start by first checking all connections and I will take out and clean the sending unit

 

[Dock Rocker]

Thanks for the advice
I’ll start by first checking all connections and I will take out and clean the sending unit

Clean and scuff the ground at The gauge cluster as well. That’s typically the problem after the gauge going to crap.


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