Same here. At 76k miles on our 2018 Pacifica, dealer found coolant in cylinders. We have been approved for a new engine (we have the extended 100k mi warranty through MOPAR) but dealer just received final authorization to order it last week. They've had my van since May 12 of this year. Dealership has been great, but even they had a tough time getting communication from Chrysler. Now, another possible 3 month wait for my new engine.

Sorry this is happening to so many of us!

 

Same here. At 76k miles on our 2018 Pacifica, dealer found coolant in cylinders. We have been approved for a new engine (we have the extended 100k mi warranty through MOPAR) but dealer just received final authorization to order it last week. They've had my van since May 12 of this year. Dealership has been great, but even they had a tough time getting communication from Chrysler. Now, another possible 3 month wait for my new engine.

Sorry this is happening to so many of us!

Have you opened a case with Chrysler cares? Across the many threads discussing this issue, at least two people mentioned they were able to get parts faster by opening a case with Chrysler cares.

 

Just curious. Those with 2018's that are seeing these issues, can you post your vehicle build dates? I wonder if there is any given time frame we can nail down for these failures.

As I have a 2018, I'm concerned that I might be vulnerable. I only have about 70,000 kilometres (42,000 miles) on mine so far. This information will help my decision to keep or trade my van sooner than later.

 

My van is 30 miles away at the dealer, so I can't check the build date. Hope others can help!

 

Just hit the P303 code (cylinder 3 misfire) yesterday on a 2017 Pacifica Limited with 68k miles. Car's currently at the dealer and I'll update this thread with my experiences. They're going to pressurize the coolant system over the long weekend, will scope the cylinder, and will test the coolant for combustion byproducts, so hopefully on Tuesday I'll know more. I did get the Mopar Lifetime Extended Warranty, so if a gasket change / cyl head change / engine change is needed, it should be covered. Biggest pain is that they only cover $35/day for rental cars and only up to 5 days' worth, and rental cars are a LOT more expensive than that these days.

 

Well, the cylinder is leaking coolant, so we're looking at either a head gasket, cylinder head, or new engine -- they're starting the teardown now and should know tomorrow which it is.

 

Just shared my engine nightmare (coolant intrusion and head gasket replaced last year....this year same error code and engine needs replacing). Still under Certified PreOwned warranty and they won't pay. It's been in the shop for 3 months and I am waiting for them to respond to my lawyer. Details and other complaints on this thread. Warped Engine Block?!

 

+1

2017 61k miles, all maintenance done on time, coolant leak, dealer said it needs new head gasket. (No visible leak on the outside of the ). Chrysler care is a joke - no help there.
Additionally mine has the rocker arm ticking noise.

interesting how the van is falling apart right at the end of the warranty period.

 

Have 2017 Pacifica 7 years later and 148,000 miles never missed oil changes had 75,000 and 125,000 service and 2 weeks ago check engine light came on. Auto repair mechanic diagnosis is #5 cylinder shows coolant entering and misfiring. Either get a new gasket or new engine.

 

It has been said somewhere in this forum that some Pentastar engines are built in Canada and others in Mexico. How does one determine where their engine was built? Is there perhaps a digit in the vehicle identification number that signifies the origin? Or maybe there's a digit stamped on the engine number. If so, where is the engine number located?

Are there more head gasket failures on engines manufactured in one country versus the other? What about engines with cracked blocks?

 

According to Wikipedia Pentastar engines are not built in Canada. It also doesn't mention how they can be identified.
They list 3 locations. Dundee Engine Plant in Dundee, Michigan, Trenton Engine Plant in Trenton, Michigan, and Saltillo Engine Plant in Ramos Arizpe, Coahuila, Mexico.

 

Ok, got it. My original questions remain:
1. How do we tell the engine manufacturing site where the engine was made?
2. Which engine manufacturing site has more head gasket failures?
3. Which engine manufacturing site has more failures due to cracked blocks?

 

Manufacturing of the 3.0-liter, 3.2-liter and 3.6-liter V-6 Chrysler engines produced at Mack Avenue Engine Plant in Detroit.Jan 26, 2017, I am not sure if this will help.

Stellantis Media - Production of the FCA US Pentastar V-6 Engine Family Surpasses 5 Million

Cementing its status as an FCA US LLC workhorse, total production of the Pentastar V-6 engine family surpassed the 5-million mark earlier this month.

media.stellantisnorthamerica.com

 

Please take notice people and change oil every 3k miles, I believe these are running hot..

 

Our 2018 Hybrid engine light was on with p0305 misfire code a couple of weeks ago, was told it needs a new camshaft, waited a week for the warranty company to get approved and now the dealer is telling us it has a very loud ticking coming from the engine and it needs a new engine We do have the extended warranty but they only cover $35/day up to $175 for the rental car, don't really know how long it will take the new engine to get replaced, just called Cheysler Care and they will not cover the loaner for us, so pissed now

 

Found this interesting TSB regarding replacing the oil filter adapter in this thread. Does anyone know if this is the same part that is connected to the oil cooler located in the valley of the V-6? I found it for both 2018 and 2021 model years. (Note: the entries appear to have been originated by NTHSA reports).

More importantly, what does this record mean for those who have experienced engine issues due to the failure (whether from breakage by over tightening or by manufacturer defect) of this part?

To save you time looking it up, here is what the record shows (appears to be cut off at the end):

060000 ENGINE AND ENGINE COOLING

RECORD_ID: 4129265
Bulletin Number: 9003357a
Replacement Service Bulletin Number: N/A
NHTSA Item Number: 10234379
Date Posted: 02-22-2023
Component Name: 060000 ENGINE AND ENGINE COOLING
Make: CHRYSLER
Model: PACIFICA
Year: 2021
Date Added: 04-17-2023
Summary: ADAPTER, Engine Oil Filter (Pentastar V6) For all 2014MY replace the Oil Filter Adapter (OFA). For any other MY review and follow instructions from the latest STAR Online S1809000007 available on Dealer Connect. Also, consider the followin

 

S1809000007

a little Google fu and found this.
https://static.nhtsa.gov/odi/tsbs/2021/MC-10212473-9999.pdf

 

If you search other Chrysler, Dodge, Jeep and Ram forums you will see other 3.6 Pentastar cylinder head replacement posts. My 2014 Town & Country had the left cylinder head replaced twice earlier this year.
Because I bought the van new with the Chrysler Lifetime Maximum Warranty (no longer available)
I only paid the $100 deductible.

 

So it turns on I have a blown engine as well it was first a blown head gasket. The block is now damaged and I need a new engine do you guys know if a 2024 engine will fit in a 2018 Pacifica

 

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