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Old 02-10-2012, 09:29 PM   #211
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i82, it is always a pleasure to work on my 70 after dealing with the new stuff. I still write with crayons, so the computer controlled stuff makes my head hurt.
No matter what makes it fire an internal combustion engine new or old operates all the same.

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Old 02-10-2012, 09:41 PM   #212
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The longer I read this thread, the more I love my mini van motor. I had an 2000 F150 with a casting flaw on the passenger side block surface. Didn't leak that much but it just pissed me off to pay thirty grand for a truck and it leaked oil. No help from Ford. I'm sure the Jeep folks will get to the bottom of this soon and respond appropriately.
I've been getting the same feeling, even though I wasn't going to say it before you did. What is it with this van thing anyway. Do people actually think that an engine is going to be made specifically for a Jeep and maybe even specifically for the wrangler? Com'on, even with the dumb contrary things that they do sometimes, they are in the business of making money. At least with the so called van engine, it's been tried and proven everywhere and there's certainly nothing wrong with that. I mean people have even been swapping small block chevy's in some of the older Jeeps. Now what kind of an engine is that, if not everything conceivable and imaginable.
Having said this, where else is the Penstar being used and they wouldn't dare put it in their vans, would they?

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Old 02-10-2012, 10:17 PM   #213
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At least with the so called van engine, it's been tried and proven everywhere
Nothing beats a minivan engine!


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Old 02-11-2012, 12:37 AM   #214
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Just noticed a ticking sound while at a drive-thru this evening and found this thread by chance. After reading the whole thing I went out to check mine out for confirmation and it sounds like I have it too . Sounds loud to me and is pretty distinct on the driver side just like the others mentioned here. I believe it just started happening because I would of noticed it earlier.

Guess I'll make an appointment with the dealer to document it in case it is an issue. Not happy. Curious what others find out from their dealers.

BTW, mine is a 2012 JK Sport with a 9-11 birth date and 4500 miles.
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Old 02-11-2012, 05:18 AM   #215
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Welcome to the club zoso1972! It sucks but at least you have company. I had to play a little run around but now mine is getting fixed. I figured out if the dealer doesn't make you happy then call Chrysler and for some magical reason they become ever so helpful. Oh, I have a 9-11 as well.
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Old 02-11-2012, 09:44 AM   #216
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Another 11SEP11 Jeep - I should get some stickers made up
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Old 02-11-2012, 10:38 AM   #217
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I do like the looks and thought of the old inline six, with a lot more power of course. They never had to haul around a 2ton+ JKU. Not sure where else they used that engine and an obvious inherited design from AMC. Now, on the other hand, I do like all the clearance between my engine and radiator, especially with not having a mechanical fan. I am somewhat leery about having to depend on that alone for cooling, though.
The previous owner surely didn't remove it, did they?
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Old 02-11-2012, 02:59 PM   #218
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Has anyone noticed the sound on the passenger side? I have a slight ticky ticky on the passenger side of the motor, but I wouldn't say it is horrendous or distracting. I may be at high risk of becoming a tick hypochondriac. My pentastar was manufactured in December.
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Old 02-11-2012, 04:17 PM   #219
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Has anyone noticed the sound on the passenger side? I have a slight ticky ticky on the passenger side of the motor, but I wouldn't say it is horrendous or distracting. I may be at high risk of becoming a tick hypochondriac. My pentastar was manufactured in December.
You probably do not have anything wrong. I have the same sounds. If it gets worse, take it in.
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Old 02-11-2012, 04:32 PM   #220
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Has anyone demanded both heads be replaced when this occurs, a whole new engine, or whole new Jeep?
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Old 02-12-2012, 12:34 PM   #221
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You probably do not have anything wrong. I have the same sounds. If it gets worse, take it in.
2012 Wrangler Noise/Vibration DIY Fix Found


Hey guys,

Wanted to save others from the same headaches I've gone through on a problem that is popping up slowly but steadily across the net. For some people (obviously myself included), a loud noise/vibration is heard from the center console area in/behind the dash near the shifter, when the truck, and ambient air are cold, from 1200-1500 rpms. It gets louder as you put more load on the engine and goes away once the truck is up to full operating temperature.

After months of digging, reading, and experimenting, I was finally able to solve the gremlin this morning, after reading about some else's similar problem (thanks Oatmountain Al !) and how he had to let the dealer tear his new dash apart to make the noise go away. I wanted to share how I achieved silence without ripping the dash or heater core out.

It seems the noise/vibration comes from the two aluminum heater lines that enter the cabin through the firewall, where they go from rubber in the engine bay to aluminum line once in the cabin. They run very close to each other. My suspicion is that when cold, they are shrunk and thus close enough that they do not normally touch (as I found by running cardstock between them); they are however close enough to vibrate against one another under load (1200-1500 rpm). I believe when the motor heats up, the tubes expand and fit tighter in the plastic line holder or press against each other enough so they touch tightly and don't vibrate. My fix was to remove the glovebox, slice a piece of heater hose (bought at any autoparts store) and slide it between the two tubes, up towards the top right where they make a sharp 90 degree bend. This has worked and I repeated it by removing and re-installing (I also re-tested tonight at a brisk 29 degrees and once again had silence for the first time since it got cold it September). See pics below (note, I later added a zip-tie below the hose to keep it from sliding down). Good luck, and enjoy your 12's, I hope this saves a lot of other people from some major headaches and dash vibrations. I'm glad I found a DIY fix for it instead of bringing it in for a major teardown at the dealer. Happy Wheelin-

-Rich

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Old 02-12-2012, 01:29 PM   #222
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Has anyone noticed the sound on the passenger side? I have a slight ticky ticky on the passenger side of the motor, but I wouldn't say it is horrendous or distracting. I may be at high risk of becoming a tick hypochondriac. My pentastar was manufactured in December.

Yes. I found this forum after Googling Pentastar ticking noise. Everything I read said it was coming from drivers side. Im like good...Maybe its uppose to sound like this. Keep in mind im not super mechanically inclined when it comes to cars, but...something was off. Then the check engine light came on for a day, then went off. Now..my 2012 sport w/ 1,400 miles is at he shop, they suspect bad head, it failed pretty much every test there while I waited 2+ hrs. This is not the first time they seen this, and by the sound of things not the last. Mine was built 11/11. Mine was "ticking" when it was cold, when it was hot, when I drove it...well all the time.
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Old 02-12-2012, 02:37 PM   #223
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As someone possibly looking to get back into Jeeps (I owned an 89 Cherokee, 92 Wrangler, 00 GC) this thread is particularly alarming. Has anyone with a '12 build date had the ticking issues? I love Jeeps, but this shouldn't be happening with a vehicle that almost costs 40k.
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Old 02-12-2012, 09:58 PM   #224
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As someone possibly looking to get back into Jeeps (I owned an 89 Cherokee, 92 Wrangler, 00 GC) this thread is particularly alarming. Has anyone with a '12 build date had the ticking issues? I love Jeeps, but this shouldn't be happening with a vehicle that almost costs 40k.
Seems to be the ones built only from July to sept or so of last year with the issues.
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Old 02-12-2012, 10:04 PM   #225
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Seems to be the ones built only from July to sept or so of last year with the issues.
The range appears to be July-November build dates. See Gmichael403 post above.
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Old 02-12-2012, 11:14 PM   #226
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Baffled by everybody talking about lifters. The Pentastar doesn't have lifters. It has hydraulic valve lash adjusters, but those aren't lifters, those just put some pressure on the valve followers to keep them in contact with the camshafts so that they don't "tick". The valve lash adjusters going bad will merely make your engine noisy, they won't kill your engine. So if your engine is merely making valve ticking noise *without* a check engine light, by all means mention it at your next oil change, and perhaps switch oils (these valve lash adjusters are rather small and more sensitive to oil viscosity than hydraulic lifters), but don't panic. Note that a valve lash adjuster going bad will *never* throw a code, because it doesn't affect the actual operation of the engine at all, it just makes it noisy. Right now it appears Chiseler is trying to figure out what they're going to do about this -- if a bore in the head is too big and that's what's allowing all the oil to seep out of the adjuster, they have to replace the head, but then they need to figure out what to do with the heads they get in return (probably sleeve the valve adjuster bore) because they don't want to keep throwing new heads at the problem, they want to rebuild the old heads they get back and use those rebuilt heads to replace the heads that "tick".

It appears, however, from reading through this thread that there's a different issue with a valve whose bore is too big and which is allowing leakage. That's a different problem altogether. It should throw a code sooner or later if that's your problem. If your engine fails the leakdown test, this is your problem.

Two problems, two urgencies. I wouldn't get too upset about the lifter tick right now -- it's not going to kill your engine. But the problem is telling the lifter tick from the valve tick. So if it's getting *really* loud and annoying -- or if it throws a code -- by all means take it to your dealer ASAP for a leakdown test to see if you have a bad valve.
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Old 02-13-2012, 07:24 AM   #227
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Alright just dropped my jeep off for service, decided to bring it in after all. Ive been driving it around all weekend and its really starting to sound like crap. Cant let it go. See what happens when the service rep calls me.

Badtux, it does not matter whats making the noise it should not be there on the jeeps with no mileage on them. It sounds terrible, we didnt all spend $30k+ to be driving around in a vehicle that sounds like we spent $200. Either way im sure chrysler will do good on their part. Time will tell.
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Old 02-13-2012, 07:46 AM   #228
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"Baffled by everybody talking about lifters. The Pentastar doesn't have lifters. It has hydraulic valve lash adjusters"

Hey badtux - sorry to baffle you. Hydraulic valve lash adjuster is probably the technical term, but it is far different than a mechanical valve lash adjuster. It is pressure operated, maintaing a lift on the "rocker." Basically serving the same function, to a point, as a lifter in a pushrod engine. Since this engine does not have a lifter (DOHC) I was using lifter as a generic term. One of the valve lash adjuster bores was too large on my drivers side head, hence the head replacement. 3100 miles on the clock.

Overtrained got it right - any ticking over and beyond normal opertion, I.E.: injectors, ect., is cause for alarm when any vehicle now is a large purchase. I have to say I am very pleased with the response I got from Chrysler and my local dealership, and my Pentastar is running and most importantly SOUNDING like it should.
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Old 02-13-2012, 08:56 AM   #229
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most importantly SOUNDING like it should
Let's hear that bad boy in all it's new glory
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Old 02-13-2012, 12:48 PM   #230
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Dropped off my jeep at 7:30 am and its almost 2pm and still no phone call hahahaha

I find this amusing because I know what the problem is already from everyone here. I should have the mechanics sign up on the forum and read this thread
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Old 02-13-2012, 12:54 PM   #231
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Dropped off my jeep at 7:30 am and its almost 2pm and still no phone call hahahaha

I find this amusing because I know what the problem is already from everyone here. I should have the mechanics sign up on the forum and read this thread
I always find the problem and tell them when it gets dropped off. Otherwise I get the run around of "all normal"
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Old 02-13-2012, 01:23 PM   #232
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I always find the problem and tell them when it gets dropped off. Otherwise I get the run around of "all normal"
Oh I told them the problem and i can insert my foot in mouth now for the above post because I just got a phone call and like you said, "everything is normal".

I explained to him about the head issue that everyone was having and he said the issue people are having with the 3.6 engine is a misfire, it throws a code and then they lead it back to having to change the head as we all know in here. He was then explaining to me about injector noise and all that which i already know.

Of course no one hears it but me right? I told him you mean to tell me if you stand next to the car on the drivers side with the hood shut you dont hear the motor ticking out of the ordinary?......... "No"

Like someone stated if they dont pick up a code after throwing a check engine light they arent fixing shit. At least its documented
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Old 02-13-2012, 01:26 PM   #233
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Howdy folks! First post for me here.

I currently have 14,600 miles on mine. 7/11 build date. I've had the driver side ticking since new, as well as a short puff of blue smoke from the exhaust at startup since new. I would always just grin and bear it.

Well, mileage has been steadily going downhill, I've noticed the occasional stumble at idle, and then, after reading this forum and others, almost like clockwork, I got the CEL this morning.

Sitting in my dealer's service waiting area now. Will add a data point once I get the verdict. GRRRRRRR.
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Old 02-13-2012, 01:48 PM   #234
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Oh I told them the problem and i can insert my foot in mouth now for the above post because I just got a phone call and like you said, "everything is normal".

I explained to him about the head issue that everyone was having and he said the issue people are having with the 3.6 engine is a misfire, it throws a code and then they lead it back to having to change the head as we all know in here. He was then explaining to me about injector noise and all that which i already know.

Of course no one hears it but me right? I told him you mean to tell me if you stand next to the car on the drivers side with the hood shut you dont hear the motor ticking out of the ordinary?......... "No"

Like someone stated if they dont pick up a code after throwing a check engine light they arent fixing shit. At least its documented
That's exactly why I haven't bothered taking mine in. I'll wait until failure of SOMETHING to do so.

Good Luck!
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Old 02-13-2012, 01:54 PM   #235
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That's exactly why I haven't bothered taking mine in. I'll wait until failure of SOMETHING to do so.

Good Luck!

Thanks dude.....Ill probably drive it off the lot and the light will come on, that will be my usual luck. It could be raining whores and I would get hit with a faggot
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Old 02-13-2012, 01:56 PM   #236
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Howdy folks! First post for me here.

I currently have 14,600 miles on mine. 7/11 build date. I've had the driver side ticking since new, as well as a short puff of blue smoke from the exhaust at startup since new. I would always just grin and bear it.

Well, mileage has been steadily going downhill, I've noticed the occasional stumble at idle, and then, after reading this forum and others, almost like clockwork, I got the CEL this morning.

Sitting in my dealer's service waiting area now. Will add a data point once I get the verdict. GRRRRRRR.
Well at least you know yours will be getting fixed
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Old 02-13-2012, 02:35 PM   #237
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Well at least you know yours will be getting fixed
I sure hope my Service Mgr is as optimistic as you are!

They've had her in there about an hour and a half now. It's really cold out. I hope a loaner is in the works!
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Old 02-13-2012, 02:38 PM   #238
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I sure hope my Service Mgr is as optimistic as you are!

They've had her in there about an hour and a half now. It's really cold out. I hope a loaner is in the works!
If its throwing codes and running like a bag of doody they have no choice
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Old 02-13-2012, 03:08 PM   #239
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I sure hope my Service Mgr is as optimistic as you are!

They've had her in there about an hour and a half now. It's really cold out. I hope a loaner is in the works!
Tell'em to loan you one that has one of them van engines in it to try out, in case you decide on trading down...
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Old 02-13-2012, 03:13 PM   #240
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Results of first trip to dealer after CEL:

1. Codes were P0300 (random multiple cylinder misfire) and P0306 (cyl #6 misfire).
2. Dealer reflashed PCM per TSB# 18-007-12.
3. Dealer opened Star case and will let me know Chrysler's recommendation.

No new code was thrown during 5 mile trip home. Will update when there is one.

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