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2005 Escalade
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53 Posts
Discussion Starter #1
Hello all, it's been a while since I've posted on here.

I see my last thread got over 6,000 views wow, neat!

Now, as far as my vehicle's issue and low oil pressure, i have reviewed various threads but not many have seemed to follow up on what helped their vehicle get fixed after the the oil sensor switch had been replaced and the problem continued.

Can someone please chime in on this? I would greatly appreciate it, i will also update this when i find my fix. Thanks.
 

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08 Escalade ESV awd, 05 Yukon Xl Denali awd, 06 SRX sold
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1,852 Posts
I had the low oil warning at idle but my truck was also rattling from the engine verifying that there was actually low oil pressure and not just a bad sensor, Before tearing into it I ordered oil pump timing chain and all associated gaskets, when i tore it down I found a brittle o-ring at the oil pump pickup to be the culprit, after repairing this, oil pressure was back to normal and even my rattle at cold startup was gone, this was my situation
 

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'05 ESV Platinum, 250,000 still looking fine, really fine!
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1,133 Posts
I had the same problem. Low oil pressure and ticking lifters, definetly a sign.

With wesyders advise (like above) I too resolved the issue by replacing the oil pick up tube o-ring. I also replaced the oil pump and timing gear set.

Comparing the new timing gear set against the original with almost 200k on them, I really did not need to replace.

If you are DIYing if you have all wheel drive your looking at about 8 hours IIRC. Two wheel drive vehicles are much easier with shorter replacement time.
 

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2005 Escalade
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53 Posts
Discussion Starter #4
I had the low oil warning at idle but my truck was also rattling from the engine verifying that there was actually low oil pressure and not just a bad sensor, Before tearing into it I ordered oil pump timing chain and all associated gaskets, when i tore it down I found a brittle o-ring at the oil pump pickup to be the culprit, after repairing this, oil pressure was back to normal and even my rattle at cold startup was gone, this was my situation
Wesyder thanks for your response, the weird thing is, my lifters aren't knocking at all! there's no audio signs of that, i do however hear a manifold leak at startup but that goes away with 20 seconds or so but that sound i've been hearing since a year after i bought it. Did you have to drop the front axle? to get to your oil pump pickup tube? My buddy who's a mechanic said there's other ways, but the safest is to remove everything that will be in the pan's way to not lose a screw or something like that.

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I had the same problem. Low oil pressure and ticking lifters, definetly a sign.

With wesyders advise (like above) I too resolved the issue by replacing the oil pick up tube o-ring. I also replaced the oil pump and timing gear set.

Comparing the new timing gear set against the original with almost 200k on them, I really did not need to replace.

If you are DIYing if you have all wheel drive your looking at about 8 hours IIRC. Two wheel drive vehicles are much easier with shorter replacement time.
I guess you answered my question, all that stuff has to be removed if this is indeed my issue, thanks Jnresv.

Anyone else have any ideas?

I wasn't clear on my original post but these is my situation. ..

1. Low oil pressure at Idle about 3 PSI (Chiming sound)
2. 15 PSI at city driving, and of course dropping to 3 PSI when stopped.
3. 20 PSI at 55 MPH
4. No valvetrain noise.
5. Replaced 5 w 30 Mobil one oil (Synthetic) and Fram filter, always had been used, with 10w30 Royal Purple (Synthetic), and AC delco filter and nothing changed.

I'm thinking something is clogged somewhere. is there a way to vacuum oil out from somewhere where big particles also can be sucked out?
Can the oil cooler cause this?
 

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08 Escalade ESV awd, 05 Yukon Xl Denali awd, 06 SRX sold
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1,852 Posts
2005_ESCALADE said:
If it's the sensor on the top back of the motor, that has been replaced. Do you think i received a faulty sensor? It made no change to the previous.
just curious what warnings are you getting that lead to low oil pressure
 

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2005 Escalade
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53 Posts
Discussion Starter #8
I saw the gauge dropping little by little over time.
When i decided to replace the sensor was when it was in the orange/red. (IT didnt chime before)
After replacing it, it now chimes although it's at the same level it was , previously with the old sensor.

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just curious what warnings are you getting that lead to low oil pressure

I saw the gauge dropping little by little over time.
When i decided to replace the sensor was when it was in the orange/red. (IT didnt chime before)
After replacing it, it now chimes and tells me on the dash that i have Low Oil Pressure, although it's at the same level it was previously with the old sensor. I wish we hadn't thrown the old sensor out. Sighs!!
 

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03 cadillac escalade
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11,902 Posts
I will bet it's the stepper motor in the cluster bad and the sender unit was still good

Because if it didn't chime before and the needle in the red on the oil then that means it's not the sender unit

Get ahold of a tech-2 and do a guage sweep test
It will peg the gauges in one position and show what they should be reading if they don't read what the tech-2 shows then the stepper motor is bad
 

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2005 Escalade
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Discussion Starter #10
I will bet it's the stepper motor in the cluster bad and the sender unit was still good

Because if it didn't chime before and the needle in the red on the oil then that means it's not the sender unit

Get ahold of a tech-2 and do a guage sweep test
It will peg the gauges in one position and show what they should be reading if they don't read what the tech-2 shows then the stepper motor is bad

The sweep test was done, as well as adding a little air pressure in the sensor hole, and it jumped up. Unfortunately it's not the stepper motor or gauge. Thanks.
 

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08 Escalade ESV awd, 05 Yukon Xl Denali awd, 06 SRX sold
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1,852 Posts
Yeah generally if your getting the chime the problem is sender or actual oil pressure, where did you purchase the new sender ?
 
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