Anyone else have issues with their Pentastar?

[roaniecowpony]

I think we may be catching each other's echos!

It's amazing in 44 and still alive. Oil field rig up/rig down crew. Climbing telephone poles and a 42' fall/pole burn, high school and college football days..... KBR transportation in the Middle East. I make some noise until I get warmed up too. I guess me and old 3.6 are 2 peas in a pod.

Card carrying "club Med(icare)" member here. Acrobatic airplanes, dirtbikes, and thousands of miles on horses, seems to have a toll. I can't even walk down the hallway without rattling like a bag o bones. Just like Rice Crispies... snap, crackle, pop.

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[YJdude]

Early in my career, I worked for about a decade as a machinist. I worked in several major aerospace companies in southern California and many small shops for short stints. One shop, the foreman would walk by each bench at 9am and set 2 Buds on the bench, the fridge was constantly stocked to the hilt with Bud. I only lasted a month or two there. I seemed to have a hangover many mornings and couldn't stand drinking beer that early.

HAHA!! What a great place to work!
That post really says it all... Aerospace company.... High precision stuff, and everything worked out fine, even with a few cold ones in the system!! I love it.
And beer is the best cure for hangover... your foreman was obviously a thoughtful dude. ?

 

[azjl#3]

I did test drive it and yes they did pre warm it up because it took the sales guy 20 minutes to bring the jeep around for me to look at it. I also did bring it back and complained about the idle down tapping to which they said they all do that. I even talked to another sales guy and he even admitted that they go out and start up all the jeeps in the morning because they know the cold start noises would drive customers away. My main concern right now is why my oil pressure is at 26 psi when others report 29 psi. If someone came on here and said they see the same thing on their dash after driving home when the engine is hot then I would drop this whole thing and move on.

please do not fret the 26 vs 29, it is statistically insignificant..

 

[azjl#3]

One recommendation, some my not like the answer: Turn the radio up. You won't hear the engine.

 

[Kyanche]

Early in my career, I worked for about a decade as a machinist. I worked in several major aerospace companies in southern California and many small shops for short stints. One shop, the foreman would walk by each bench at 9am and set 2 Buds on the bench, the fridge was constantly stocked to the hilt with Bud. I only lasted a month or two there. I seemed to have a hangover many mornings and couldn't stand drinking beer that early.

Aerospace shops were okay with alcohol in the building? That surprises me. The ones I'm familiar with are huge sticklers for things like that.

 

[Petey]

Not just this engine, my made in Mexico Jeep 392 Hemi ticks very loudly at startup and beyond. These engines are notorious for bad lifters and chewed up camshafts. Took it to the dealer and they said it’s a normal “Hemi tick”. They better hope so because I have that diagnosis in writing from them and it’s under warranty.

they're just hoping you'll have the failure after ur warranty.. if it doesnt fall apart they'll insist everything is perfect

 

[Swisskidd]

It is my understanding that the latest version of the 3.6 Pentastar was designed for 0w20 with dimensional changes made to oil passages specific to that viscosity.I would love to run a 5w30 but am hesitant to do so if this is true.

Not sure if anyone replied to this yet -
I have the new design 3.6 in my 2020 Grand Cherokee. Did my first oil change at 1500 miles and switched to 5W30. Next oil change at 5k. Then every 5k after that. Am at 57k miles with zero issues. Also installed an oil catch can to prevent oil blow by to re-enter the intake manifold (topic for another thread).

Edit: Using Mobil 1 and WIX XP filters exclusively.

 

[Beachcomber72]

Four things…

A. Stress will kill you (100% guaranteed).
B. Things happen, accept it.
C. Quit watching digital on screen dummy gauges that will always fluctuate more wildly than you’d like causing anxiety.
D. Open up a paper United States map and close your eyes and touch a point on said map, while opening your eyes and holding your finger on the spot you touched look for the closest river to that spot, then fill up your vehicle with gas and snacks and drive to said river, when you arrive to it get out and pee in the river and then jump in and swim in the waters you just peed in, relax and just float as you laugh about swimming in the water you just soiled now let all your inner worries and demons go, dumping all unnecessary life’s baggage in the river and when satisfied get out and don’t dry off get back in your Jeep and drive home with a grin on your face bigger than life itself.

problem solved guaranteed…

and yes I’ve done it and never looked back on life’s little BS issues.

ps. (I love my 3.6 pentastar)

 

[roaniecowpony]

Aerospace shops were okay with alcohol in the building? That surprises me. The ones I'm familiar with are huge sticklers for things like that.

It was the 70s, privately owned, maybe 12-15 men. Times were different.

During that period, in the big aerospace companies like Northrop, Rockwell, McDonnell Douglas, Garrett (just the places I worked), there was drugs, crime, prostitution, violence against management, etc.. On the automotive topic, while working at Garrett in a nuclear research machine shop, I saw large quantities of 321 stainless turbo exhaust flanges being run through our little R&D shop. I mentioned it to the foreman and indeed it was a California based 935 race team's stuff, which one of our management was somehow connected. He got canned when it came out. He could have gotten away with a few parts, but it was many dozens of parts and hundreds of man hours. I worked on many guns in that shop and many parts for my aerobatic airplane. It was different back then. People weren't so tight assed.

 

[OBD]

Not sure if anyone replied to this yet -
I have the new design 3.6 in my 2020 Grand Cherokee. Did my first oil change at 1500 miles and switched to 5W30. Next oil change at 5k. Then every 5k after that. Am at 57k miles with zero issues. Also installed an oil catch can to prevent oil blow by to re-enter the intake manifold (topic for another thread).

Edit: Using Mobil 1 and WIX XP filters exclusively.

Thanks for your response.I am ordering the Mishimoto catch can in the next few weeks and after this winter I'm switching to 5W30

 

[cthomas31]

I wish I could just trade it in but it is too new and has negative equity therefore my car payments will be astronomical. I hate the feeling of being stuck with a defective engine.

First rule of thumb when buying a car. Make sure you don’t roll off the lot with negative equity. Not trying to be a jerk but I wouldn’t buy a car if I knew I would be negative when trading it in.

I have the 3.6 and also don’t have the same issues. Oil pressure is 29 at idle and has been great since knew now at 42k miles.

 

[MagnusWolf89]

Well I know another person that has a 2022 gladiator with the same engine and he is going to see what his oil pressure does after he drives home from work to see if it does the same thing. If not then there is either a problem with the oil pressure regulator switch or the oil I am using flows too fast to build pressure even though it is 0w20. It will idle at 29 psi hot until you hear that solenoid click on then it drops, so there is something goin on with that. I don't have jeep software on my scan tool so I can only look at basic stuff.

 

[YJdude]

It was the 70s, privately owned, maybe 12-15 men. Times were different.

During that period, in the big aerospace companies like Northrop, Rockwell, McDonnell Douglas, Garrett (just the places I worked), there was drugs, crime, prostitution, violence against management, etc.. On the automotive topic, while working at Garrett in a nuclear research machine shop, I saw large quantities of 321 stainless turbo exhaust flanges being run through our little R&D shop. I mentioned it to the foreman and indeed it was a California based 935 race team's stuff, which one of our management was somehow connected. He got canned when it came out. He could have gotten away with a few parts, but it was many dozens of parts and hundreds of man hours. I worked on many guns in that shop and many parts for my aerobatic airplane. It was different back then. People weren't so tight assed.

None of us will look at the F-14 the same again....HAHA!
I personally would rather my Jeep (or anything else really) be built by proud, happy, hard working men while they drink a few on the assembly line than stone sober, angry people having to worry about the million ways to get fired today.
It's kind of like mowing the lawn or working on the Jeep (all day job)... With a cold one comes pride. Without a cold one... just sucks.

 

[CarbonSteel]

Card carrying "club Med(icare)" member here. Acrobatic airplanes, dirtbikes, and thousands of miles on horses, seems to have a toll. I can't even walk down the hallway without rattling like a bag o bones. Just like Rice Crispies... snap, crackle, pop.

LOL - I tell my wife from time to time that I have things that hurt I didn't even know was attached and if I wake up one morning without something aching, I'll have to be dead.

 

[20JLU89]

Should hear my 2020 2.0 turbo 4 cylinder cold Start sounds like a dam tank for a min with all the ticks you can dream of I just accepted it and once warm it's like butter.

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