Oil psi gauge? Any help?

[tradar]

Ok I have a 99 mountaineer with 5.0 motor. I just changed over to a fresh motor complete. 116,000 miles on the new motor. the body has 224,000.

The old motor was tired, when you would start the truck and it was real cold out the old psi gauge would not read for a couple of minutes. but NO RADDLE of ticking. the lower end went out of it just driving down the road.
Now I change the motor and the new motor does the same thing. I just went out and started it. it is -10 f out right now. But I started my ranger and it came right up?
Any ideas/\???I am thinking about puting a old style gauge on it.
can It be the instument cluster? the tack does not work now?

 

[Four0Sport]

the oil pressure guages in explorers and rangers are 'dumby' guages. they dont actually read a real number, they just read enough to tell you that the pressure is in the 'ok' range. there is a thread on here on how to convert to a real functional oil guage both using an aftermarket guage and on converting your dash guage to working like this.

mail me your 'tired' 224K mile 5.0. please.

 

[tripplec]

Yeah I found out the same think. I wonder why the gauge with jump up the instant it started almost with a bounch. The sender is a power switch and not a pressure sender and the gauge aways reads the same unless you voltage changes. It just tells you that you have pressure. Man...that really suck in this design and basically an idiot light in reverse. If you changed motor and the sender is different then the gauge is likely faulty or there is a wiring problem.

Hope that helps.

 

[tradar]

the oil pressure guages in explorers and rangers are 'dumby' guages. they dont actually read a real number, they just read enough to tell you that the pressure is in the 'ok' range. there is a thread on here on how to convert to a real functional oil guage both using an aftermarket guage and on converting your dash guage to working like this.

mail me your 'tired' 224K mile 5.0. please.

I waited for the rods to go be for I changed it. You would not want it.

 

[tradar]

Yeah I found out the same think. I wonder why the gauge with jump up the instant it started almost with a bounch. The sender is a power switch and not a pressure sender and the gauge aways reads the same unless you voltage changes. It just tells you that you have pressure. Man...that really suck in this design and basically an idiot light in reverse. If you changed motor and the sender is different then the gauge is likely faulty or there is a wiring problem.

Hope that helps.

Well I sure hope it is the gauge.
I need to know. I just don't understand how I could have no oil PSI on the gauge only when It is cold???
Otherwise it works fine.
I think I need to figure out how to hook up a standard old presure driven gauge If nothing more just to know,

 

[Four0Sport]

i would check the wiring to the oil pressure sending unit. which i beleive is on the drivers side of the motor, you can access it through the left front wheel well. check for a loose or bad connection first, then look for contaminants or oil on the sender.