Oil Pressure Sensor/Sender

[Marlon_JB2]

Where is this thing? I'm doing a gauge install, and have no clue where to find this thing. Any help is appreciated.

Thanks. \/

 

[Trodo]

There's a small sensor connector right above the oil filter. That's the sender connection.

 

[JeepJeepster]

u better post pics and stuff!! and where u got it from/ what gauges u got!

 

[Marlon_JB2]

No pics yet... gotta find the digi.

Use your imagination... I'm mounting them under the climate controls in that little "area". \/ I don't use it anyway.

EDIT: Just looked for it... oh great. I need some insight from somebody who's done this before... this may not be doable by poor little me.

 

[Marlon_JB2]

Bump.

Nobody's installed an oil pressure gauge?

You must be registered for see images attach

Voltage is in.. and works great.

 

[thx1138]

Marlon, So you hooked straight into the sending unit and it gives an accurate reading? Also, what is the brand gauge you used? :-k

 

[Marlon_JB2]

No, I didn't. I have not installed the oil pressure gauge yet. The oil pressure gauge has its own sender, and it doesn't look like there's a way to put both of them in the same spot (with a T fitting).

I tried to feel around it, still nothing. someone help! lol

The gauges I found at a local 24 hour store. They're made by "Sunpro".

 

[thx1138]

I don't know if this will help but I saw some sending units on www.egauges.com that had 2 terminals thus negating the use of a "T" adapter...I think. There's also the matter of the ohm range the unit should use. There seems to be 2 different types. DING!....yes tha's right..I used my $10 word for the day: Negating. I thank you \/

 

[Trodo]

OPERATION
The oil pressure sensor uses three circuits. They
are:
•A 5–volt power supply from the Powertrain Con-trol
Module (PCM)
•A sensor ground through the PCM’s sensor
return
•A signal to the PCM relating to engine oil pres-sure
The oil pressure sensor has a 3–wire electrical
function very much like the Manifold Absolute Pres-sure
(MAP) sensor. Meaning different pressures
relate to different output voltages.
A 5–volt supply is sent to the sensor from the PCM
to power up the sensor. The sensor returns a voltage
signal back to the PCM relating to engine oil pres-sure.
This signal is then transferred (bussed) to the
instrument panel on either a CCD or PCI bus circuit
(depending on vehicle line) to operate the oil pressure
gauge and the check gauges lamp. Ground for the
sensor is provided by the PCM through a low-noise
sensor return.
REMOVAL
(1) Disconnect the negative cable from the battery.
(2) Raise vehicle on hoist.
(3) Remove front splash shield.
(4) Disconnect oil pressure sender wire (Fig. 87).
(5) Remove the pressure sender (Fig. 87).
INSTALLATION
(1) Install oil pressure sender.
(2) Connect oil pressure sender wire.
(3) Install front splash shield.
(4) Lower vehicle.
(5) Connect the negative battery cable.
OIL PUMP
REMOVAL
(1) Remove the oil pan and pick-up tube (Refer to
9 - ENGINE/LUBRICATION/OIL PAN - REMOVAL).
(2) Remove the timing chain cover (Refer to 9 -ENGINE/
VALVE TIMING/TIMING BELT / CHAIN
COVER(S) - REMOVAL).
(3) Remove the timing chains and tensioners
(Refer to 9 - ENGINE/VALVE TIMING/TIMING
BELT/CHAIN AND SPROCKETS - REMOVAL).
(4) Remove the four bolts, primary timing chain
tensioner and the oil pump.
DISASSEMBLY
(1) Remove oil pump cover screws and lift off cover
plate.
(2) Remove pump inner and outer rotors.
NOTE: Once the oil pressure relief valve, cup plug,
and pin are removed, the pump assembly must be
replaced.
(3) If it is necessary to remove the pressure relief
valve, drive the roll pin from pump housing and
remove cup plug, spring and valve.
INSPECTION
CAUTION: Oil pump pressure relief valve and
spring should not be removed from the oil pump. If
these components are disassembled and or
removed from the pump the entire oil pump assem-bly
must be replaced.
(1) Clean all parts thoroughly. Mating surface of
the oil pump housing should be smooth. If the pump
cover is scratched or grooved the oil pump assembly
should be replaced.
(2) Lay a straight edge across the pump cover sur-face
(Fig. 88). If a 0.025 mm (0.001 in.) feeler gauge
can be inserted between the cover and the straight
edge the oil pump assembly should be replaced.
(3) Measure the thickness of the outer rotor (Fig.
89). If the outer rotor thickness measures at 12.005
mm (0.472 in.) or less the oil pump assembly must be
replaced.
Fig. 87 OIL PRESSURE SENDING UNIT
1 - BELT
2 - OIL PRESSURE SENSOR
3 - OIL FILTER
4 - ELEC. CONNECTOR
9 - 132 ENGINE - 3.7L KJ
OIL PRESSURE SENSOR/SWITCH (Continued)[/img]