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Thread: Timing chain failure on the Dodge Challenger Reply to Thread
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  Topic Review (Newest First)
10-22-2014 08:33 AM
72/340 I'm at 34k since the TC failure and rebuild. At 8k since the recall was done. Runs like a champ.
On a side note....I have messed with all the Predator tunes and right now am happiest with stock tune, 89 gas, MDS off, and 15% throttle boost.
10-21-2014 05:19 PM
19johned53 12k miles since my P01. Zero issues, runs as good as ever, and yes, I run it hard.
10-21-2014 05:11 PM
rscarawa Gee. Only took 4 years for them to properly respond?
10-21-2014 01:02 PM
Originally Posted by 72/340 View Post
What with failures well hashed out and recalls being done, let's see how the replacements are holding up. Post up your milage on the new TC. Mine failed at 42k, the replacement went to 26k before I got the recall, all parts looked fine at that time. Coming up on 6k on the newest TC...
Because you asked, an update on our 2010. Coming up on 7k miles on the new block and heads, almost 9k since TC failure.

Failed on the highway 11/21/2013, at 54,153 miles. Two months before that had contacted dealer to describe a highway speed problem that felt like the engine losing power for a split second at a time. Had heard about TC failures at that point, and asked specifically about preventive maintenance. Was told "timing chains don't fail on 5.7L HEMIs... never seen it". They applied a firmware fix (TSB #18-021-13 ) regarding "Performance Derate Above 55 MPH Immediately After Start-Up When Accelerating At Wide Open Throttle".

At time of failure 80% or more of driving was highway (Wife's car, she was doing almost daily 160 mile round trips at the time). Out of town dealership that received the car on a flatbed said, "Can't be the timing chain, they never fail"... and 2 days later called us saying TC broke. Ended up replacing the guide, tensioner, chain, 2 intake valves, 2 exhaust valves, 1 intake pushrod, 1 exhaust pushrod, oil control solenoid, and brake booster check valve. Received the car 11/27/2013.

Subsequently a regional Chrysler service advisor inspected the car (borescoped) and declared it "all good", but did approve new lifters, due to new lifter noise that didn't exist before the "repairs". Hometown dealership went to perform the lifter replacement on 2/7/2014 at 55,967 miles, and upon opening the engine found multiple scored cylinders and crossthreaded intake bolts and valves not seated into the head. Short block, heads and lifters all replaced. Received the car on 2/28/2014.

Since then, she doesn't make those trips anymore, perhaps once a month... we're just now coming up on 63k miles, 80% or more local driving. My wife drives it like she stole it - always has. Same way she drove her '93 GT 5.0 when we met. She swears it doesn't have as much pep as it did before the block/heads change, and that engine braking is more pronounced than it used to be, but other than that it has been problem free. I don't drive it enough to be a good gauge of comparative performance before/after. MDS engagement was never very noticeable before, not any more so now. First two oil changes since block was replaced were with conventional (1000 miles, 3000 miles). Last change was synthetic.
10-21-2014 12:00 PM
fxef79 It is neither a "Recall", nor a TSB. It is a "customer satisfaction" action.

You should have received a paper notification in the mail, however, just like you would with a recall.
10-20-2014 07:23 AM
crow It is a recall, not a TSB.
10-16-2014 09:39 PM
Mr69 I had my work done to my 2011 RT at the dealer this week. I asked them afterward about the oil, since i run synthetic and they said they did not replace the oil or filter. They may have drained it and refilled. It looked semi-dark so i dont think its new oil. The car runs nice and quiet, seems to have much less engine tick/noise then before. I have 43k miles on my car.

I am confused as to why this is not a recall, but a TSB. Seems to me its more of a safety issue if your engine goes at highway speeds. I did not even know about this TSB until i took my car in for the air bag wiring harness recall. Chrysler had been sending me letters and called me several times about the wiring harness recall but never mentioned the timing chain TSB. It was the dealer that saw it on the computer and told me i should do it when i brought the car in for the airbag harness recall.
08-23-2014 09:49 AM
19johned53 I've got a little over 10k on my P01 service. No noises, no problems.

Car runs as good as ever, and I don't even think about this "issue" anymore.
08-23-2014 09:36 AM
Mileage on new parts

I now have 13,688 miles on mine since my failure on 11/13/13. I drive about 28 miles round trip each day on interstate at 68 to 75 mphs almost always with MDS engaged since the repair. It's been to St Louis for a Cards game and back in June, over 1,000 miles roundtrip, again with no problems. I have noticed absolutely none of the problem noises from under the hood that had been occurring for over 10 months before mine failed. I don't plan on "running it with MDS disengaged" so if mine fails again with the aluminum guide and all the other new parts (2 new heads, 16 new pushrods, etc., etc.) I'll be very disappointed!! And believe me, Pietro and Jill will be the first to hear about it. Recall they both assured me there was "nothing to worry about" back in August 2013!!
08-22-2014 04:01 PM
salvy59 I guess it seems right what you are saying after all the original guide part had to break for the chain to jump!
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