Oil Pressure gauge

[NeXtras]

correct, but WHAT is telling the switch to open or close, get what im saying?

theres some switch or sensor thats telling the gauge what to display, what your showing is just the function for the gauge operation itself

 

[subford]

correct, but WHAT is telling the switch to open or close, get what im saying?

theres some switch or sensor thats telling the gauge what to display, what your showing is just the function for the gauge operation itself

Oil Pressure and a spring.

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Oil Pressure Switch for Gauge or Light:

Oil Pressure Sender for a true reading Gauge:

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[Bob Ayers]

correct, but WHAT is telling the switch to open or close, get what im saying?

theres some switch or sensor thats telling the gauge what to display, what your showing is just the function for the gauge operation itself

The oil pressure switch with a LIGHT is a NORMALLY CLOSED switch, which means it is closed with NO OIL PRESSURE. The oil pressure switch used with the gauges is a NORMALLY OPEN switch, which means it is open with no oil pressure, and closed with about 7PSI of pressure.

 

[NeXtras]

exactly my point, there is something that is pressure sensitive.. so in theory it can get stuck open or closed, much like a t-stat and not work properly.. correct? i would assume this rarely happens because it is oil its measuring, which is quite obviously a lubricant and prevent binding...

 

[Bob Ayers]

exactly my point, there is something that is pressure sensitive.. so in theory it can get stuck open or closed, much like a t-stat and not work properly.. correct? i would assume this rarely happens because it is oil its measuring, which is quite obviously a lubricant and prevent binding...

The oil never comes in contact with the switch mechanism, it normally puts pressure on a diaphram.

 

[Lost]

Yea take out the old gauge and replace it with the new one...
Would take some cutting of the cluster, but could be done.

Could be done but not look stock and the curcuit board on back would be funto re do .

 

[NeXtras]

The oil never comes in contact with the switch mechanism, it normally puts pressure on a diaphram.

ok so ever more so proving my point, its a moving part, therefore is suceptible of freezing.. correct?

 

[Skandocious]

Brian just what exactly IS your point? lol

 

[Mr. Stroker]

I see what your getting at Nextras... The switch cant be to inacurate, as long as you have oil pressure the gauge will move, if it doesn't, then you simply dont have any.

Buuuut, it dont tell how much pressure it acually has, but who cares motors can run on 2 psi right? LOL as long as oils going somewhere.

 

[NeXtras]

my point is theres some sensor there.. not just a simple on/off.. yes the sensor sends on/off but it measures the pressure to some extent..

what i mean is this.. that switch wont close until 7psi(?)... so PRESSURE is keeping that switch closed.. follow me? lol

my gauge has gone past what it normally sits at and also does sink lower sometimes too...

what i really want to know is why when you start it up cold, the gauge comes up and in doing so comes to the reading slower and slower..

im slowly losing sight of what my original point was lmao...

 

[subford]

my point is theres some sensor there.. not just a simple on/off.. yes the sensor sends on/off but it measures the pressure to some extent..

Not a sensor, it is a brake over switch.

what i mean is this.. that switch wont close until 7psi(?)... so PRESSURE is keeping that switch closed.. follow me? lol

True.
Switch closes at 6psi.

my gauge has gone past what it normally sits at and also does sink lower sometimes too...

what i really want to know is why when you start it up cold, the gauge comes up and in doing so comes to the reading slower and slower..

This has nothing to do with the Oil Pressure Indication System.
This is caused by the amount of charge in your battery and your alternator output. In other words when the voltage changes going to the gauge from your electrical system all of the gauges not just the Oil Pressure Indication System will change some with the voltage change.

Manual:
Oil Pressure Indication System

The oil pressure indication system consists of an oil pressure gauge and an oil pressure switch.


Oil Pressure Gauge

The oil pressure gauge is a magnetic gauge movement consisting of three primary coils, one of which is wound at a 90-degree angle to the other two. The oil pressure system uses a switch and a fixed resistor; the resistor is attached to the instrument cluster flex circuit. A primary magnet, to which a shaft and pointer are attached, rotates to align this primary field, resulting in pointer position. The bobbin/coil assembly is pressed into a metal housing which has two holes for dial mounting. There are no adjustment calibrations or maintenance required for this gauge.


Oil Pressure Sender

The oil pressure switch controls the magnetic oil pressure gauge's pointer position. The oil pressure switch closes under normal engine operating conditions (oil pressure above 42 kPa [6 lb/sq in]). The oil pressure switch opens with the engine (6007) off and no oil pressure.

Oil Pressure Indicating System

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