Not using ESS feature anymore... Here's why

[smithrd65]

That is PATHETICALLY silly to believe the ESS system has anything to do with your OIL PRESSURE LOL.
Sounds like another thread started for a USELESS AND WRONG COMPLAINT

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[GreyFox]

The one nice thing about ESS is that I started teaching my daughter to drive and it kicks in when she does a complete stop. No guessing for her. Now, the question is am I crazy for teaching her to drive in my new Jeep

 

[JDLouisville]

Oil PSI fluctuates regardless of ESS

Leave your information center on oil pressure for a day and you’ll notice it moving around.
Pressure remains at 32ish 95% of the time, however, at times, you’ll notice it jump up into the 60s for a second or two, then drops back down to normal 32ish PSI.

 

[Litfuse]

It’s a two stage oil pump. It will fluctuate. Don’t be worried if it fluctuates, be worried if it doesn’t.

 

[digitalbliss]

Only the rif raf push THE BUTTON!!!

 

[Zazoh]

I push one button to start Jeep and immediately push other button. I bought the engine to work for me. No rest! No slacking. Get your ass back to work engine.

You think the oil has pressure. I have pressure!

 

[stil2low]

Like Litfuse said, these motors used a dual stage pump. If you didn’t see the fluctuation it will trip the MIL. Part of the start up is to cycle from high to low pressure
Also the only bypass in the oil system is in the cooler under the intake. At high volume, oil can bypass the cooler to help circulate faster

Pressure @ 1201 - 3500 RPM........30 (warm) - 139 (cold) psi
Pressure @ 3501 - 6400 RPM........62 (warm) - 139 (cold) psi

 

[Jo's Jeep]

Like Litfuse said, these motors used a dual stage pump. If you didn’t see the fluctuation it will trip the MIL. Part of the start up is to cycle from high to low pressure
Also the only bypass in the oil system is in the cooler under the intake. At high volume, oil can bypass the cooler to help circulate faster

Pressure @ 1201 - 3500 RPM........30 (warm) - 139 (cold) psi
Pressure @ 3501 - 6400 RPM........62 (warm) - 139 (cold) psi

Thanks for the info, that's what I saw at the BITOG forum as well.

 

[Jo's Jeep]

Oil PSI fluctuates regardless of ESS

Leave your information center on oil pressure for a day and you’ll notice it moving around.
Pressure remains at 32ish 95% of the time, however, at times, you’ll notice it jump up into the 60s for a second or two, then drops back down to normal 32ish PSI.

I don't mind occasional pressure changes with varying load conditions, it's the increased frequency of these pressure spikes caused by the ESS that concerned me and prompted this thread.

 

[Jo's Jeep]

That is PATHETICALLY silly to believe the ESS system has anything to do with your OIL PRESSURE LOL.
Sounds like another thread started for a USELESS AND WRONG COMPLAINT

Possibly; but consider this. Electronic and mechanical components have a designed cyclic rate of failure. From what I've learned about the oil pump in the 3.6, it is a two stage variable vane pump controlled by an electronic relay. Why on earth would I want to subject the components to more wear and tear than is required? That said, you are initiating a high oil pressure demand with each ESS sequence instead of the less frequent oil pressure demands under varying load conditions during normal driving conditions.

 

[Jo's Jeep]

hmm That is not how the system works. Also, it would not matter. The oil filter's job is to remove particulate matter and any nasties which get in there from blow by. All the oil in your engine is makes a pass through the filter and is clean enough to do its job.
Also, the oil pressure sensor in your car is not designed to accurately read fast spikes, so you certainly cannot take any reading you see as accurate.
Furthermore, it is almost certain that power is momentarily removed from that sensor when power is applied to the starter, thus it needs some milliseconds to come back to operation. All cars with ESS stop giving power to most things in the car when starting. You will notice for example your wipers will stop moving for a second.
The radio will stay on, but charging will be disrupted. Naturally, this also means that any momentary spikes you see are not reliable.
You can always pop a calibrated gauge on there and check it. Short of that, don't take the little blip as gospel.

Take a peek at this article to get an idea of what I'm talking about concerning filter bypass under high pressure conditions. Specifically this sentence from the first paragraph: "Regardless of the location of the valves, they share the same responsibility and provide protection for the engine in the event of a filter restriction or during periods of high oil pressure or pressure surges."

https://noln.net/2016/07/31/bypassing-oil-filter/

 

[Majestic]

Anyone else scratch their head when a California resident, who has the legal freedom to leave California, makes a communist complaint about the state? You can’t leave a communist state at will. By default CA is not communist. Are they not teaching this any more? I must be getting old lol.

Of course they’re not communist. Communist countries have a much higher vaccination rate.

 

[roaniecowpony]

It sounds like you don’t like ESS and then are making up a reason to not like it.

Maybe. Sounds more like he's pointing out a reason he doesn't like it.

 

[melendez69]

The one nice thing about ESS is that I started teaching my daughter to drive and it kicks in when she does a complete stop. No guessing for her. Now, the question is am I crazy for teaching her to drive in my new Jeep

Just don't let her do this (and I didn't know 2WD was a thing).

https://jalopnik.com/mall-crawling-just-got-too-real-for-this-poor-jeep-1833176472

 

[IronScott]

Of course they’re not communist. Communist countries have a much higher vaccination rate.

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