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Discussion Starter #1
My 2013 Challenger R/T Automatic, had the P01 recall work done about a year ago. About 15k miles later everything was okay until...
Monday leaving Las Vegas about 15 miles out, headed to So Cal the timing chain broke. My girlfriend was driving, I was passenger. Cruise control on, doing 80mph, mds on. We heard a snap/click sound, the warning chime, and the check engine light came on. She pulled over immediately. The engine shut off. I attempted to start it but it would only crank and at a faster speed than normal. I was almost certain the timing chain broke.

It sucked to be stuck in the desert, about 95F outside. It took the tow truck about 3 hours to get there (called AAA). Luckily we had plenty of water and clouds passing in front of the sun. We had it towed back to so cal, about 250 miles.

The next day before it was towed to the dealership (same one that did the P01), I checked the codes, they were P0304 & P2172.

Today I got the call from the dealership and yes, the timing chain and tensioner were broken as well as bent valves and possibly damaged pistons.

All is covered under the power train warranty. They said it'll take about a week to repair. I told them to take their time because I want it done right.

Has anyone else had a timing chain failure after the recall work? I'm not sure if the technician screwed up the P01 recall work or not, because it was okay for about 15k miles.

If the P01 was done properly than why would the new, supposedly stronger replacement parts fail?

Also, I don't drive the car hard at all.
 

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i would venture to say that it was never done in the first place.

btw, Welcome to CT
 

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Discussion Starter #5 (Edited)
I could tell that they disassembled the engine, so I think they performed the P01 update and the paper work from the dealership supports that (also got software updates)... However, I'm wondering if they incidentally put old revision, new parts in. Or forgot to use loctite.

Unfortunately, I'll never know for sure as the dealership will never disclose that information to me.

I'm going to take a closer look at the P01 update paperwork when I get the car back (it's in the glove box) and see if it lists the part numbers for the updated rev parts.
 

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Discussion Starter #6
I'm going to call and ask if they'll give me the broken parts when I pick the car up next week.
 

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It would be best to "pop in" and look at the parts that failed. Otherwise, they will probably be "gone" when you arrive.


That will tell the story if the latest tensioner shoe was used or not.
 

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When this whole timing chain thing started way back when, there was a very short time they used a different plastic guide. The new-er guide being white in color, rather than the black original piece. It's up for debate whether or not the material was different. Anyway, there is a chance, that they used the white timing chain guide early on, which may be the culprit. After being in at least a dozen of these new late-model hemis, I can tell you for a fact that it never was a material problem to begin with. I just rebuilt a 5.7 with 130,000 miles on it with the original black chain guide and it had virtually no wear. It all boiled down to harmonics with a gear ratio of the Challenger and the MDS system if memory serves.. as a side note, these gen III Hemis are about wore out by about 150 to 160 thousand miles. There are three major components that wear out in these hemis..... Piston rings, Cam and lifters, and valve stem seals. If you did your maintenance intervals on time the bearings, and everything else in the motor looks perfect. The coating on the Pistons will be gone, however the Piston wall clearance is within limits. I've yet to crack into a 6.1 yet, but I've rebuilt a few older 5.7's which are basically identical, except for a few high performance goodies.
 

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I just rebuilt a 5.7 with 130,000 miles on it with the original black chain guide and it had virtually no wear. It all boiled down to harmonics with a gear ratio of the Challenger and the MDS system if memory serves.. as a side note, these gen III Hemis are about wore out by about 150 to 160 thousand miles. There are three major components that wear out in these hemis..... Piston rings, Cam and lifters, and valve stem seals. If you did your maintenance intervals on time the bearings, and everything else in the motor looks perfect. The coating on the Pistons will be gone, however the Piston wall clearance is within limits. I've yet to crack into a 6.1 yet, but I've rebuilt a few older 5.7's which are basically identical, except for a few high performance goodies.
I imagine the majority of 5.7s owners [us on this forum are probably inclined to go above and beyond] probably rely on using conventional oil.

I wonder if these with full syn would have less wear on those parts. The 6.1, 6.4, 6.2SC engines are full syn oil as factory fill and recommended in the owners manual for ongoing maintenance.
 

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I imagine the majority of 5.7s owners [us on this forum are probably inclined to go above and beyond] probably rely on using conventional oil.

I wonder if these with full syn would have less wear on those parts. The 6.1, 6.4, 6.2SC engines are full syn oil as factory fill and recommended in the owners manual for ongoing maintenance.
You know Hal, I'm starting to question the oil change interval criteria. I have a good friend who is the service manager for a major GM dealership here in AZ. He tells me the LS engines also experience cam/lifters failures. A GM vehicle, say pickup, may go 10k before the computer says bring it in for maintenance. The computer uses some algorithm based on time, mph, engine run time, etc..... His theory is this super low viscosity oil cannot hold a decent boundary layer with oil temps @ 225-230F. I have never had a Mopar product go past 8k without telling me to change the oil personally, but in my mind that's way too long between oil changes, synthetic or not. I see many commercials touting 10-15k between changes if you use their product. Not me.... If I could figure out how to attach pictures to a post via my smartphone, I have a few the members my find interesting.
 

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My 2013 Challenger R/T Automatic, had the P01 recall work done about a year ago. About 15k miles later everything was okay until...
Monday leaving Las Vegas about 15 miles out, headed to So Cal the timing chain broke. My girlfriend was driving, I was passenger. Cruise control on, doing 80mph, mds on. We heard a snap/click sound, the warning chime, and the check engine light came on. She pulled over immediately. The engine shut off. I attempted to start it but it would only crank and at a faster speed than normal. I was almost certain the timing chain broke.

It sucked to be stuck in the desert, about 95F outside. It took the tow truck about 3 hours to get there (called AAA). Luckily we had plenty of water and clouds passing in front of the sun. We had it towed back to so cal, about 250 miles.

The next day before it was towed to the dealership (same one that did the P01), I checked the codes, they were P0304 & P2172.

Today I got the call from the dealership and yes, the timing chain and tensioner were broken as well as bent valves and possibly damaged pistons.

All is covered under the power train warranty. They said it'll take about a week to repair. I told them to take their time because I want it done right.

Has anyone else had a timing chain failure after the recall work? I'm not sure if the technician screwed up the P01 recall work or not, because it was okay for about 15k miles.

If the P01 was done properly than why would the new, supposedly stronger replacement parts fail?

Also, I don't drive the car hard at all.
Hi TreyL,

Sorry to hear about this! Please don't hesitate to send us a PM with any questions or concerns that may arise during your dealership appointment, we're happy to assist if needed.

Andrea
Dodge Social Care Specialist
 

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Discussion Starter #14
Here's the failed parts. The tensioner didn't actually break, but is chewed up on top, i think from the chain breaking and gouging into the tensioner.

Again, this is the post recall parts that failed. I'm still confused as to whether the replacement tensioner was supposed to be white or black.
 

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That tensioner shoe is an "old style", all plastic unit.


The newest replacement tensioners are a cast metal, with a plastic face for friction reduction.
 

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The tensioners are black plastic - the newer revision...don't know if the spring rate was changed. They look the same side-by-side.

The chain guide:
*original = black plastic
*1st revision= white, all plastic (~ '12 model year)
*final revision = aluminum w/ white nylon overlay (in place by '14+ model year)
 

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Updated version

gen-iii-hemi-timing-chain-defect-recall-guide-shoe-replacement.jpg

A Guy
 

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Here's the failed parts. The tensioner didn't actually break, but is chewed up on top, i think from the chain breaking and gouging into the tensioner.

Again, this is the post recall parts that failed. I'm still confused as to whether the replacement tensioner was supposed to be white or black.

When the P01 became "official", the metal shoe was supposed to be used. Before that, failures were replaced with the plastic shoes, as the new metal version wasn't released into the parts system yet.


Under the P01, the black or white shoes were to be replaced with the metal one. Something "fishy" going on if a plastic shoe was used under the P01
 
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