Anyone else have issues with their Pentastar?

[Tncdrew]

Let us know if they find something!

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[gsbrockman]

I don't know enough about the V6 to comment on whether 75 PSI is too high or not.

Ironically.....I just did an oil change on my wife’s 2015 Jeep Grand Cherokee Limited (3.6L) today and I saw 99 psi on a somewhat spirited run from a stop sign. Castrol EDGE 5W20 synthetic and a MoPar oil filter.

 

[AFD]

You're making the assumption that only the labor is cheaper, and also that the labor is only cheaper.

Yeah, can you rephrase that for me in a complete sentence? ?

And I wasn't assuming anything other than 2 scenarios. Either the engine parts are made and assembled in Mexico - or the engine parts are made in the US and assembled in Mexico. My opinion that 1 scenario is skeevier than the other has no relation to one or the other being cheaper.

But sure, if you want me to assume something, then I'd hazard to guess that if assembly labor is cheaper in another country then parts manufactured there might be as well (not necessarily, and they could be cheaper if imported from yet another country).

 

[rickinAZ]

Any member who complains about the Pentastar clearly never owned a pre-2012 with the anemic minivan engine. I ordered a 2012, and when I picked it up I knew before I left the dealer's lot that Penastar was a HUGE improvement. The 3.8 felt like a Pentastar with two plug wires disconnected - despite the larger displacement.

BTW, the lemon law is ALWAYS bandied about on this forum. I can't tell whether it's because Jeeps are bad, or that we are (wanna be) litigious. That arrow seems to be pulled from the quiver at the slightest provocation.

 

[dragoneggs]

Exactly, they should put in a USA made pentastar built by trained assembly people that get paid decent. Not some guy making 5 pesos an hour with no training just slapping an engine together. The only two countries that should be building something as complex and sensitive as an engine are the United States and Japan.

I would add Germany and Korea.

 

[mwilk012]

An old rule of thumb for oil pressure is 10psi per 1000rpm.

26psi at idle is way more than adequate.

This isn’t your grandpas small block Chevy.

 

[mwilk012]

Yeah, can you rephrase that for me in a complete sentence? ?

And I wasn't assuming anything other than 2 scenarios. Either the engine parts are made and assembled in Mexico - or the engine parts are made in the US and assembled in Mexico. My opinion that 1 scenario is skeevier than the other has no relation to one or the other being cheaper.

But sure, if you want me to assume something, then I'd hazard to guess that if assembly labor is cheaper in another country then parts manufactured there might be as well (not necessarily, and they could be cheaper if imported from yet another country).

have you ever seen the video of a 3.6 being built?

 

[dragoneggs]

My hometown in central Florida had a ton of hills. Not San Francisco level but definitely enough to notice. It surrounded a lake and all the roads leaving the lake area went uphill.



^yep!

Florida has hills???

 

[roaniecowpony]

This isn’t your grandpas small block Chevy.

Are you saying this table from the FCA service manual is wrong? what data is correct? How do you know that?

 

[Tncdrew]

This isn’t your grandpas small block Chevy.

Ha! True! But it still generally applies ?

 

[AFD]

have you ever seen the video of a 3.6 being built?

I have not, but would likely watch one. And that has what to do with anything I've said?

Otherwise, please put me on block if you're going to speak in unintelligible riddles. And honestly, no offense intended if you've been drinking or English is not your native language ?

 

[JPThing2]

I had a Tacoma as a rental a while back what a gutless POS that truck was. Even the RAV4 I just had seemed to be way down in quality and tech than any other vehicles I've been in as of late

I had the exact same experience. I've owned 50+ cars in my lifetime and never before have I hated a vehicle more than that Tacoma I rented (except for a Sentra I was stuck in when they were out of cars - CVT garbage - felt like a Murray mower). Toyotas were always quality. Now they are riding their name and maximizing profit with cheapened garbage. Say what you want about the PentaStar, but port injection and 8 billion sold (ok I exaggerate but not really) spells good things. Sorry the OP seems to be having issues. Cars are always negative equity depreciating assets - don't let the last year of bizarro world fool anyone. Dump it and buy something older if you dislike it that much.

 

[mwilk012]

I have not, but would likely watch one. And that has what to do with anything I've said?

Otherwise, please put me on block if you're going to speak in unintelligible riddles. And honestly, no offense intended if you've been drinking or English is not your native language ?

Its perfectly clear what I was saying, and sums up what could be a much longer discussion on government policy, tax rates, work ethic, and frankly, any longer on this and the kids are likely to strike this whole thread as somehow “political”.

If you watch the video of the pentastar build, it’s the American plant and it will reduce faith in the product considerably.

 

[mwilk012]

Are you saying this table from the FCA service manual is wrong? what data is correct? How do you know that?

It’s not “wrong” per se, but it’s not helpful or correct either. If you have a pentastar engine idling at 7 psi I can absolutely guarantee you that engine has significant internal damage and will be put in limp mode as soon as you attempt to accelerate.

The 3.6 is one of the only engines our shop will even bother to rebuild, and if we put one together that idles at less than 25 psi were pulling it back out to tear it down or replace it.

 

[mwilk012]

Ha! True! But it still generally applies ?

Sure, in a different engine. The 3.6 when new should idle at 29-31 and hit 75 within a few seconds when RPM exceeds 3500. There should be no noticeable difference in oil pressure from 1k-3499RPM. It is electronically regulated.

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