I don't remember the first time I started it up.

But now I notice that it gives me 5 to 10 tics when I first start it up (it goes away afterwards)...and it's a 2013....

...I'll have a listen when I start it back later...

Do your JKs do that?

 

Yeah, it does it 2 or 3 seconds and stops....typically after I haven't started it in a bit.

I love this JK so much!

I just wish I could see in a way if it's the AA or AB head I have on....

 

“Each major component has an individual identification number with a stamped on it and a radio frequency tag. They know what time each part went into a particular machine. If there is a problem with a part, it’s easy to find! They know what parts are on what engines! ”

The above quote is from the Pentastar.Com
Pentastar Engines: Production and Factory

Kinda makes you think that MOPAR would know exactly where the bad heads are and in what vehicles, unless this is really a problem in design and able to show up in any 3.6. I have not had any issues with mine. The engine delivers great power and is very smooth. So far I would look to have the 3.6 in any future vehicle, but that could change!

 

A Diesel would habe been pretty cool!

I just couldn't resist my JKs charm!!!

 

Reply to Sunkist Rubi

In the first picture of my reply you are absolutely correct ! over the long term, the statement and it's intent is for the young who have a limited budget to live on, and what 59¢ quart off the shelf bargain oil will do.

Now let's get to your concern:
First: Can we agree metal casting and casting debries expand under heat ?

if not ! look at Point 1:

Statment 1:
Expantion of oil routes ( gallies if you will plus casting debries expantion ) reducing it's size, can and will restrict the amount of oil flow, which limit's the transfer of heat to be removed, perpetuating increased heat build up and loss of lubrication.

Can we agree ?
if not ! Look at Point 1.

Point 1:
Can we agree there is a head problem ? if not! Look at Point 2

Point 2:
Can we agree Chrysler is replacing heads ?if not ! Look at First:

I Don't ! Under high temperatures and pressures to remove all the sulfur, nitrogen and oxygen compounds (harmful compounds) that normal solvent extraction processes can't remove when flow is reduced, or stopped ( the starting process if you will )

33

 

The engine serial number is a good starting point: T or S !

 

T = US
S = Mex.

Right?

 

I agree with that: Why ?

In other Chrysler brand of vehicles, Chrysler notified the owner to come in for a head gasket replacement on the 3.6
And I would think it was through the engine serial number tracking.

So let's ask ourself, why not the Jeep brand !
Some reason could be:

1. Let the jeep owner come in on his own, (another word's strung out) that will keep the cost down for Chrysler and won't flood the dealers with work load that Chrysler can't fill from the limited head supply.
This is why dealership have to go to Chrysler to get the OK to replace !

2: Which bring up customer service
Customer service, first it is profit motivated for Chrysler and not the consumer, and then second, service to the jeep brand owners.

33

 

Yes:
T's in the engine serial number stand for trenton engine plant U.S.

S in the engine serial number stand for Saltillo engine plant, Mexico.

33

 

I've been all over my motor, WHERE are you guys finding the S and T ?