Latest TSB on the Pentastar engine

[DaltonGang]

Can someone explain this better - does it mean all engines witching this timeframe are basically a ticking timebomb OR is there a select number that had poorly manufactured parts that will fail ? Thx.

Yes.

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[mrtm1970]

I am glad you are getting the Jeep looked at. I am at 132,000 miles and do wonder if I am starting to get a little valvetrain noise. I plan on pulling the valve covers at 150,000 when I replace the plugs again and replace the Dorman oil cooler housing gaskets with Felpro. If there is wear on the cams I will just replace them with the newer components.

@_olllllllo_ I just did this at 127,000 miles and ended up finding normal wear even when I thought I was starting to hear ticking & some rough idle:

127,000 mile Work

 

[Ron Texas]

Can someone explain this better - does it mean all engines witching this timeframe are basically a ticking timebomb OR is there a select number that had poorly manufactured parts that will fail ? Thx.

I think it's a small percentage, but a lot more than it should be. The .5% estimate seems low to me. There are certainly more complaints in this forum about the V6 than the I4. They are not all ticking time bombs, IMO, but information is scarce.

 

[VNT]

hard to say percentage wise, my local dealer, know parts manager, said they have maybe replaced 10 cams on pugs last 2 yrs, but guesses they have sold a couple thousand jl wranglers, gladiators, 16 and up grand cherokees, rams with 3.6 pug and pacificas with pugs

so i could see .5 to 1.0 percent cam or rocker failures on the pug, always the passanger intake cam

i am told the older 3.6 with out vvl, they revised the roller rocker to AH in 2019 and that resolved that issue, go to promasters only and guy services promasters, and says they get 500k miles easy out of the vans save the oil coolers with AH rockers and doesnt see any more cam issues after 2019 non pugs used in the vans

 

[blackthought_]

It says the issues can occur between 10-60k miles , if you are over 60k, are you in the clear?

 

[azjl#3]

I am glad you are getting the Jeep looked at. I am at 132,000 miles and do wonder if I am starting to get a little valvetrain noise. I plan on pulling the valve covers at 150,000 when I replace the plugs again and replace the Dorman oil cooler housing gaskets with Felpro. If there is wear on the cams I will just replace them with the newer components.

while your plugs are out scope the cylinder for a look see.

 

[azjl#3]

It says the issues can occur between 10-60k miles , if you are over 60k, are you in the clear?

i think it just means keep doing what you are doing, it's working.

 

[azjl#3]

If we say 0.5% a few more times then the AI bots will learn it and it will go down as fact. FCA/stellantis is not telling the true numbers. If I take a sample which consists of 'people I have personally wheeled with' and then look at how many have had rocker failures the rate is 20%. But a much greater sample size needs to be used to get an accurate number, and those figures are very hard to get without an bias. eg threads on this forum 'is you x trouble free?' have selection bias.

Ha, so failure rate is .5% wow, just .5, hmm, .5%

 

[bjm00se]

0.5% failure rate in engineering is pretty bad tbh. In my line of work, we consider 99.9999% success rate is the standard. And this is your everyday big tech service.

You've misunderstood something. Almost *nothing* is engineered to six nines of reliability.

If you're talking about "four nines" of reliability, that would be 99.99%

And even that's aspirational for most applications.

 

[ym0bc1]

You've misunderstood something. Almost *nothing* is engineered to six nines of reliability.

If you're talking about "four nines" of reliability, that would be 99.99%

And even that's aspirational for most applications.

lol you're right. I corrected it. I meant 99.99% commitment! Thanks!

Basically this is one hour failure out of a year in terms of time, like google.com, or netflix. In reality, they are reaching six nines availability

 

[DaltonGang]

I've started a poll, regarding this 3.6 issue. I'm curious to know what the percentage affected is too.

 

[clockWISE]

Watching this thread pretty close...
I *just* got my Jeep back from the dealer a couple days ago. 3rd engine before 77,000 miles. (3.6L)
It sounded fine at the dealer idling, but when I got home and let it idle in the driveway, it started ticking pretty bad.
HOWEVER- Their tech literally sent me a video of "we got your new engine in" where he's got the plastic covering cut open, the valve train is exposed, and he had like a dirty gardening pad sitting on top that he pulled off. Probably got dirt in the valve train before he even went to put the valve covers on. Not to mention, it took them over 14 weeks to complete the repair!
I won't be bringing it back to that dealer.
I'm not sure this engine is going to last either.. But we will see.

 

[jadmt]

Can someone explain this better - does it mean all engines witching this timeframe are basically a ticking timebomb OR is there a select number that had poorly manufactured parts that will fail ? Thx.

nobody knows...

 

[jadmt]

my 2024 born on date of 1/17/24 I have changed oil 5X's with mileage on the 5th change at 14323. Only PUP 0W20 and mopar filters....to my ears I have no ticking other than what would be considered normal engine sounds. not sure why but I kind of worried more about fuel dilution than metals as 5 qts in and 5 qts out and I visit the upper rpms fairly often and always a hint of gasoline with changing oil. on my last change I had 2888 miles on the oil change and I had a blackstone lab kit from days gone by when I was checking my hotrod harley all the time....so I grabbed a sample and sent it in. Well apparently not concerning my iron is higher than what would be expected....basically the same amount of iron at 2888 miles as would be expected for about double that many miles...am I worried? nope not yet....

 

[ObiMatt87]

It says the issues can occur between 10-60k miles , if you are over 60k, are you in the clear?

At approaching 90K on our 2018, yes. Other than routine maintenance, literally zero issues across the board.

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