6.4 oil pressure light

[TJS43]

I have a 2017 2500 6.4 with 96k and just the other day I was pulling my camper and when slowing down and coming to a stop oil pressure light would come on. Then start driving again it would be fine, so after the weekend I did a oil change seems how it was due anyway and now everytime oil gets warmed up it keeps doing it will drop down to 5-10 psi when first coming to a stop for 2-3 seconds then goes back to normal operating psi. Any thoughts?

 

[Daw14]

Sounds like the oil pressure sensor is on the way out . Mine failed at less than 10k miles , seems like a common issue on our trucks.

 

[TJS43]

Sounds like the oil pressure sensor is on the way out . Mine failed at less than 10k miles , seems like a common issue on our trucks.

I replaced sensor and still having the same issue I’d hate to think it’s the oil pump seems how it’s so random

 

[Wild one]

I replaced sensor and still having the same issue I’d hate to think it’s the oil pump seems how it’s so random

Did you use a factory / OEM sensor,aftermarket sensors don't play nice with Mopar electronics.Another cheap thing to try,is a differant filter. The oil pumps on the hemi don't usually cause much trouble

 

[Daw14]

When I replaced mine I went to the hardware store and picked up a tee ,then got a mechanical gauge and A/N hose and other fittings . Then installed that gauge , so I could know for sure what my pressure was.

 

[TJS43]

Did you use a factory / OEM sensor,aftermarket sensors don't play nice with Mopar electronics.Another cheap thing to try,is a differant filter. The oil pumps on the hemi don't usually cause much trouble

No i used a brand called standard but symptoms didn’t change at all, truck doesn’t get noisy or run rough at all when oil light is on, I had plugged into my autel scanner and pressures are identical

 

[Wild one]

No i used a brand called standard but symptoms didn’t change at all, truck doesn’t get noisy or run rough at all when oil light is on, I had plugged into my autel scanner and pressures are identical

Spring for the OEM sensor.Your Autel scanner isn't going to read any differant then the dash,as it gets the same reading from the sensor as the dash gets. As Daw suggested you can tie a mechanical gauge in with a Tee,but i'd try a new OEM sensor also.
What brand of filter are you using?

 

[TJS43]

Spring for the OEM sensor.Your Autel scanner isn't going to read any differant then the dash,as it gets the same reading from the sensor as the dash gets. As Daw suggested you can tie a mechanical gauge in with a Tee,but i'd try a new OEM sensor also.
What brand of filter are you using?

I’m gunna do a mechanical
Test tomorrow, and it’s an oem mopar filter

 

[EdGs]

+1 on the OE sensor, went through 3 different aftermarket sensors on my 02 1500. I haven't changed the 3rd one yet to oem, but have verified that pressure is good.

 

[TJS43]

Update mechanical test is good going to put oe sensor in it today

 

[turkeybird56]

Spring for the OEM sensor.Your Autel scanner isn't going to read any differant then the dash,as it gets the same reading from the sensor as the dash gets. As Daw suggested you can tie a mechanical gauge in with a Tee,but i'd try a new OEM sensor also.
What brand of filter are you using?

DITTO on the OEM sensors. And if U ever do O2 sensors, OEM forever.

 

[TJS43]

DITTO on the OEM sensors. And if U ever do O2 sensors, OEM forever.

I’m gunna do a mechanical
Test tomorrow,

DITTO on the OEM sensors. And if U ever do O2 sensors, OEM forever

I’m gunna do a mechanical
Test tomorrow, and it’s an oem mopar filter

Spring for the OEM sensor.Your Autel scanner isn't going to read any differant then the dash,as it gets the same reading from the sensor as the dash gets. As Daw suggested you can tie a mechanical gauge in with a Tee,but i'd try a new OEM sensor also.
What brand of filter are you using?

I did mechanical test came back good, installed OEM sensor and still have same issue going to start chasing wiring now I suppose

 

[Dean2]

I did mechanical test came back good, installed OEM sensor and still have same issue going to start chasing wiring now I suppose

So you are saying mechanical test reads 30+ while dash says 10? Is this EVIC electronic readout or does yours still have an Oil Pressure Gauge? If it is EVIC, like on my 2021, it may be wiring, if yours still has the gauge, those were known to got out too.

 

[TJS43]

So you are saying mechanical test reads 30+ while dash says 10? Is this EVIC electronic readout or does yours still have an Oil Pressure Gauge? If it is EVIC, like on my 2021, it may be wiring, if yours still has the gauge, those were known to got out too.

Yes mechanical test was 35ish at idle and 55 or so while throttled up some. Electronic readout on dash and I had live data going, I was watching live data while driving and its jumping all over the place while just coasting at any speed

 

[jws123]

Yes mechanical test was 35ish at idle and 55 or so while throttled up some. Electronic readout on dash and I had live data going, I was watching live data while driving and its jumping all over the place while just coasting at any speed

when you say 35 ish was this a cold/warm engine or at operating temp? If cold you have a issue if operating temp thats normal pressure should always be checked at hot idle.

 

[TJS43]

when you say 35 ish was this a cold/warm engine or at operating temp? If cold you have an issue if operating temp thats normal pressure should always be checked at hot idle.

Yeah it was at operating temp

 

[Dusty]

I forgot how to do it, but there's a simple Gauge Self Check procedure that's initiated by manipulating the steering wheel controls. This check will cause all gauges to activate and sweep through the range: low, mid scale, high scale.

This will quickly verify instrument cluster operation.

My apologies. I know I had the procedure documented, but I can't find it this morning. I'm sure somewhere here knows how to do this on 4th gens.

Regards,
Dusty
2019 Ram 1500 Billet Silver Laramie Quad Cab 2WD, 5.7 Hemi, 8HP75, 3.21 axle, 33-gallon fuel tank, 18” wheels. Build Date: 3 June 2018. Now at 113011 miles.

 

[Dusty]

Found it:

Ram Truck Instrument Cluster Self-Test Procedure (DS)

NOTE: 2013 & up with Premium Cluster - Hold the Down button on the steering wheel controls, then move the ignition switch to the accessory position, not run.


Purpose
The instrument cluster self-test will place the instrument cluster into its self-diagnostic mode. In this mode the instrument cluster can perform a diagnostic test that will confirm that the instrument cluster circuitry, the gauges, and the indicators are operating as designed. During the self-test the instrument cluster circuitry will position each of the gauge needles at various calibration points, illuminate all of the segments or portions in the Liquid Crystal Display (LCD) unit, and turn all of the indicators ON and OFF.

Successful completion of the self-test will confirm that the instrument cluster is functioning correctly. If an indicator issue still exists, the source of the problem is likely with the CAN data bus, the Powertrain Control Module (PCM), the Totally Integrated Power Module (TIPM), the Transmission Control Module (TCM), the Occupant Restraint Controller (ORC), the Controller Anti-lock Brake (CAB), the Wireless Ignition Node (WIN) or the hardwired inputs to any one of these electronic control modules. A diagnostic scan tool will be necessary to diagnose these components. Refer to the appropriate diagnostic information.



Procedure

• Ensure that the ignition switch in the OFF position.
• Depress and hold the Odometer/trip Odometer button.
• Move the ignition switch to the ON position. Do not start the engine.
• Release the odometer/trip odometer button.
• The instrument cluster will begin to illuminate all of the operational segments in the LCD unit and perform a bulb check of each operational Light Emitting Diode (LED) indicator. The LCD segments and LED indicators remain illuminated as each gauge needle is swept to several calibration points and back. If a VFD segment or an LED indicator fails to illuminate, or if a gauge needle fails to sweep through the calibration points and back during this test, the instrument cluster must be replaced.
• When the self-test is completed, the instrument cluster will automatically exit the self-diagnostic mode and return to normal operation.
  NOTE: The self-test will be aborted if the ignition switch is turned to the OFF position, or if a vehicle speed message indicating that the vehicle is moving is received from the PCM over the CAN data bus.

Regards,
Dusty
2019 Ram 1500 Billet Silver Laramie Quad Cab 2WD, 5.7 Hemi, 8HP75, 3.21 axle, 33-gallon fuel tank, 18” wheels. Build Date: 3 June 2018. Now at 113101 miles.

 

[Wild one]

Found it:

Ram Truck Instrument Cluster Self-Test Procedure (DS)

NOTE: 2013 & up with Premium Cluster - Hold the Down button on the steering wheel controls, then move the ignition switch to the accessory position, not run.


Purpose
The instrument cluster self-test will place the instrument cluster into its self-diagnostic mode. In this mode the instrument cluster can perform a diagnostic test that will confirm that the instrument cluster circuitry, the gauges, and the indicators are operating as designed. During the self-test the instrument cluster circuitry will position each of the gauge needles at various calibration points, illuminate all of the segments or portions in the Liquid Crystal Display (LCD) unit, and turn all of the indicators ON and OFF.

Successful completion of the self-test will confirm that the instrument cluster is functioning correctly. If an indicator issue still exists, the source of the problem is likely with the CAN data bus, the Powertrain Control Module (PCM), the Totally Integrated Power Module (TIPM), the Transmission Control Module (TCM), the Occupant Restraint Controller (ORC), the Controller Anti-lock Brake (CAB), the Wireless Ignition Node (WIN) or the hardwired inputs to any one of these electronic control modules. A diagnostic scan tool will be necessary to diagnose these components. Refer to the appropriate diagnostic information.



Procedure

• Ensure that the ignition switch in the OFF position.
• Depress and hold the Odometer/trip Odometer button.
• Move the ignition switch to the ON position. Do not start the engine.
• Release the odometer/trip odometer button.
• The instrument cluster will begin to illuminate all of the operational segments in the LCD unit and perform a bulb check of each operational Light Emitting Diode (LED) indicator. The LCD segments and LED indicators remain illuminated as each gauge needle is swept to several calibration points and back. If a VFD segment or an LED indicator fails to illuminate, or if a gauge needle fails to sweep through the calibration points and back during this test, the instrument cluster must be replaced.
• When the self-test is completed, the instrument cluster will automatically exit the self-diagnostic mode and return to normal operation.
  NOTE: The self-test will be aborted if the ignition switch is turned to the OFF position, or if a vehicle speed message indicating that the vehicle is moving is received from the PCM over the CAN data bus.

Regards,
Dusty
2019 Ram 1500 Billet Silver Laramie Quad Cab 2WD, 5.7 Hemi, 8HP75, 3.21 axle, 33-gallon fuel tank, 18” wheels. Build Date: 3 June 2018. Now at 113101 miles.

This needs to be one of them sticky thingy's,lol.
Thanks Dusty,i'd never seen this procedure.

 

[Dusty]

This needs to be one of them sticky thingy's,lol.
Thanks Dusty,i'd never seen this procedure.

U.B. welcome!!

Regards,
Dusty
2019 Ram 1500 Billet Silver Laramie Quad Cab 2WD, 5.7 Hemi, 8HP75, 3.21 axle, 33-gallon fuel tank, 18” wheels. Build Date: 3 June 2018. Now at 113101 miles.