Oil gauge malfunction

[Aechild]

I've been having issues with my oil gauge on my 2006 LJ. My oil gauge would randomly show oil pressure sometimes during driving.
I have
1.Replace the pressure switch
2. Cleaned the grounds
3.Checked for a short in the wiring
4.Verified good pressure with a manual gauge
5. Cleaned the sensor side connectors
6. Cleaned and reseated the cluster connection.
7. Did an oil change

After doing, the behavior has now changed. About every other start the gauge will read 0 and I do nothing other than turn off and restart the car and it will operate normally. Other than a cluster issue I'm not sure what else to do.

 

[JKP]

Run the gauge cluster test and see if it acts up. Hold in trip odo button, turn key to ON, release trip odo button.

 

[Aechild]

Run the gauge cluster test and see if it acts up. Hold in trip odo button, turn key to ON, release trip odo button.

Ran the cluster test everything seemed fine. Then started it gauge didn't work turned the car off and then back on and it worked fine

 

[JKP]

Is it a parts store house brand switch? Possibly bad out of the box.

 

[Aechild]

Is it a parts store house brand switch? Possibly bad out of the box.

It's a duralast brand and I have already returned 1 thinking it was bad out the box

 

[Moglocker]

It's a duralast brand and I have already returned 1 thinking it was bad out the box

Get a mopar

 

[macleanflood]

Try Standard Motor Products.

Also hook up a mechanical gauge the next time you pull the sensor and actually check you have oil pressure.

-Mac

 

[Moglocker]

Try Standard Motor Products.

Also hook up a mechanical gauge the next time you pull the sensor and actually check you have oil pressure.

-Mac

He said he has already done that

 

[Aechild]

Try Standard Motor Products.

Also hook up a mechanical gauge the next time you pull the sensor and actually check you have oil pressure.

-Mac

Ill try the standard motor products. I have used a manual gauge and it was operating normally

 

[Aechild]

I replaced the sensor and it still has the same behavior

 

[macleanflood]

Then you either got yet another bad sensor... entirely plausible these days...or you have a wiring issue.

My seventh sensor in 2 years is going out already.

-Mac

 

[Moglocker]

Then you either got yet another bad sensor... entirely plausible these days...or you have a wiring issue.

My seventh sensor in 2 years is going out already.

-Mac

 

[Deputy Dodge]

As I understand it, on the later TJs if the ecm sees any pressure from the sensor it tells the gauge to read in the middle. Meaning the gauge is more longer connected to the sensor. Check the FSM to be sure. You may be looking at a computer issue.

 

[topfuel83]

Yes, don't know what the year break is, but later TJs just had a dummy light off a pressure switch, and doesn't actually tell you what the pressure is, only if there is pressure. And because it's ECM controlled, strange things can happen with it. Dex Jeeps recently had a video of I think a WJ with the 4.7 V8 that has the dummy light. The gauge was actually showing pressure with the pressure switch physically disconnected.

My 06 LJR I teed in a oil pressure sender into the oil port and put a gauge in the cab so I can see what is really going on with the oil pressure and not rely on the idiot light from the factory.

 

[ColoJeep]

Yes, don't know what the year break is, but later TJs just had a dummy light off a pressure switch, and doesn't actually tell you what the pressure is, only if there is pressure. And because it's ECM controlled, strange things can happen with it. Dex Jeeps recently had a video of I think a WJ with the 4.7 V8 that has the dummy light. The gauge was actually showing pressure with the pressure switch physically disconnected.

My 06 LJR I teed in a oil pressure sender into the oil port and put a gauge in the cab so I can see what is really going on with the oil pressure and not rely on the idiot light from the factory.

97 - 02 real gauge , 03-06 fake gauge.

 

[Aechild]

Yes, don't know what the year break is, but later TJs just had a dummy light off a pressure switch, and doesn't actually tell you what the pressure is, only if there is pressure. And because it's ECM controlled, strange things can happen with it. Dex Jeeps recently had a video of I think a WJ with the 4.7 V8 that has the dummy light. The gauge was actually showing pressure with the pressure switch physically disconnected.

My 06 LJR I teed in a oil pressure sender into the oil port and put a gauge in the cab so I can see what is really going on with the oil pressure and not rely on the idiot light from the factory.

Ended up being my ECM swapped it out with one from WranglerFix and the issues went away

 

[topfuel83]

Ended up being my ECM swapped it out with one from WranglerFix and the issues went away

Wranglerfix for the win again!

 

[Aechild]

Well I spoke too soon. Behavior started again with the new ecm

 

[Moglocker]

Well I spoke too soon. Behavior started again with the new ecm

If that’s the only issue,I would add a manual gauge somewhere

 

[JKP]

Well I spoke too soon. Behavior started again with the new ecm

Wiring.