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Infiniti Forum: [2011+] QX56 new motor, timing chains, etc
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  #21  
Old 02-13-2014, 06:11 PM
Punisher Punisher is offline
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Quote:
Originally Posted by Kcrebel View Post
No. I have the "little" 20's. Lol.
Totally agree they are about as good as racing slicks in the snow and ice.
Switched mine out for Blizzaks thanks to my dealer on my last visit having a set that fit mine. So currently my factory tires are resting comfortably in their garage. I clocked the mileage when I pulled them off so I would know the mileage on the actual tires when I put them back on.
The Blizzaks are the cats meow in the snow and ice fwiw.
I talked to the general manager about tread wear and tire life of these oem tires and the 22" tires. He told me that folks didn't rotate them. He said he has had some of them he replaced at 25k completely worn out.
AWD and the sheer weight of this vehicle will punish tires if they are not rotated often.
The Tahoe isn't awd correct? Makes a difference I would suspect.

How often have you rotated them?

Could be a composition difference in the 20's and 22's causing excessive tread wear in the 22's?
No, the Tahoe is 2/4wd. I think it's only been done once but all 4 are the same tread depth so I don't see that as being a big help. Just gotta pony up the $1200 for new tires. I was trying to get through the winter.
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  #22  
Old 02-13-2014, 10:04 PM
Back77 Back77 is offline
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Quote:
Originally Posted by marctronixx View Post
the qx does NOT have a timing BELT. it has a timing CHAIN.
Chain is what I meant???
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  #23  
Old 02-18-2014, 03:45 PM
Velocty Velocty is offline
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Default Time chain issue confirmed

Last week when I was on the highway in my '11 QX56 (56K miles) my SES light started flashing, the engine started misfiring, and would barely stay running at idle when I pulled to the side of the road. I shut it down, restarted it, and much to my surprise the engine ran perfectly. The SES light was no longer flashing, but stayed on for the remainder of the day. The next day I fired it up and poof, no SES light. Regardless, I called the dealer to schedule an appointment.

Once Infiniti took a look at it, I was told that it needed a new timing chain and that parts were ordered. When I called earlier today, I was told that the 4 parts ordered weren't in yet; however, the tech is scheduled to start the job as soon as parts arrive. When I asked about the long-term impact, if any, of the misfire, the service manager stated that the chain didn't skip a tooth, but rather the high pitch whine that was diagnosed was most likely indicative of the timing chain making contact/rubbing against the oiler. He also said that they won't know for sure what they're looking at until the tech starts disassembling the motor to access the timing chain (which I was told a timing chain replacement is a 16-hour job). This of course was fine with me, but I then asked one last question.

I asked the service manager if the replacement parts were improved, and thus will permanently solve the problem, or if this may be a chronic concern/problem area for the vehicle... He said they've already done a handful of timing chain replacements, but due to the age of the vehicle it was too soon to tell. I then asked about warranty coverage of a repeat occurrence and he confirmed that the next repair would be on me if the 70k mile powertrain warranty was up. This is understandable; however, it has caused me to evaluate my long-term ownership of the vehicle, due to the potential repair cost. The timing chain is roughly a $2k repair out of warranty.

Does anyone know if the timing chain repair/replacement is a permanent fix? Anything else to consider/think about, or any other facts regarding timing chain issues known? I really like the vehicle, but am considering trading it off for another brand.

Any thoughts are greatly appreciated. Thanks!

Last edited by Velocty; 02-18-2014 at 03:48 PM.
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  #24  
Old 02-18-2014, 05:45 PM
roughyear roughyear is offline
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Well, if it last another 70k, it will be time to trade the "Beast" in anyways... yes?
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  #25  
Old 02-19-2014, 01:26 AM
marctronixx marctronixx is offline
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these cars are too new to tell. if you go to an armada site and look at the longevity of the armada, you will not see much if any discussion on timing chain issues.

we all know cars made on an assembly line can have defects. its probably in the hundreds but i would not consider this something that will be a repeat offender. of course im no specialist but i do troll an armada forum (and ive owned two armadas prior to this qx).
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  #26  
Old 02-20-2014, 05:44 PM
Dread_Parrot Dread_Parrot is offline
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Default Timing chain

Probably, if the timing chain and anything else around it, oil pump and such let go, I'm done. Trade.
I guess if I were to keep it, I would have to interview the mechanic. Find out if they are a 'motorhead'. Someone that likes to work on them and treats the engine like it is their own. Bad thing is, they are few and far between, or they own their own small shop.
parrott
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  #27  
Old 02-28-2014, 11:36 AM
NWDriver NWDriver is offline
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Join Date: Feb 2014
Location: Central Oregon
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Angry QX 56 Timing Chain Failure

$5,500 to fix my 2011 pos timing chain at the local Infiniti dealer. 82,000 miles on the car so I'm over 12,000 on the warranty so repair not covered. Service tech off hand mentions that they are getting at least several QX's a month to fix this problem, but unfortunately mine is the first one they have experienced out of warranty. Lucky me.

So I have a call into the regional consumer affairs person who is due to call me back with in the next day or so. The dealer has really been great and sympathetic to my situation, gave me a loaner car to us until this is all worked out. The dealer has certainly won my loyalty... that is if I ever buy an Infiniti again.

Of smaller issue is the driver side door actuators on both doors have failed. That's a $1,100 fix.... so $6,600 out of pocket after 12,000 over warranty.

I bought this car because I own two businesses that are 5 hour drives apart. I wanted a large, safe SUV with decent mileage and would be dependable. Loved the beige interior of the QX56 and with snow tires it handles the Central Oregon weather like a dream. But now.... my $70,000 luxury is failing me. This is my 2nd Infiniti, my first being an FX35 with sport package. Great car, but needed something bigger to handle the roads I'd be driving when I bought my 2nd business, which is over a 5,000 foot cascade mountain pass.

Stay tuned to see if Infiniti steps up to the plate and covers the problem. If not, this story will be all over the place, Edmond's, Consumer Reports.... everywhere possible.

Last edited by NWDriver; 02-28-2014 at 11:55 AM. Reason: spelling/ grammer
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  #28  
Old 02-28-2014, 01:25 PM
KDFiveSix KDFiveSix is offline
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I love my QX. It's the nicest vehicle I have owned. These timing chain stories certainly concern me, if they are valid, but I'm not about to run over and trade it in. If it goes in the next few years I'm covered anyway. I've worked on cars my whole life, and the only time I have replaced timing chains and gears is when rebuilding motors, or on cars with over 180,000 miles beaten to hell. Nissan either had a couple ding dongs working the assembly line, for a few runs, or the parts are inferior. This whole issue seems really odd to me. wait and see I guess.
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  #29  
Old 03-02-2014, 01:49 PM
roughyear roughyear is offline
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That's why I purchased a 6yr 120k warranty.. $2400 when I bought my QX
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  #30  
Old 03-02-2014, 02:01 PM
roughyear roughyear is offline
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Again... probably isolated issues with the Timing Chains... as it's only been a handful of (unfortunate) folks. Knock on wood it remains isolated.
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