Timing Tensioner Problems of Jeep Grand Cherokee

I was driving my car down a hill at approximately 45 miles and hour, eco mode was activated, and began to slow down the light when suddenly my check engine light and traction control light came on. I felt my car losing power and steering, but thankfully was able to coast to the side of the road before it totally shut off. I had it towed to a Jeep dealership, where they inspected it and informed me that the timing chain broke. They had never seen this before and informed me it was not possible that this happened due to normal use of the vehicle. They recommended replacing the chain, tensioners, etc. , which I had them do, but they went to test drive the vehicle and found there was damage to the valves. After researching this problem, I came across this exact same issue, occurring under the same or similar circumstances, in Dodge challengers and chargers with the same engine (5. 7l v8 hemi) in the same year (2010). I saw that there was an open recall for those vehicles and called Jeep to discuss this, but they informed me that while this was the same thing, there was no open recalls for my Grand Cherokee and so there was nothing they could do.

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Hello, my name is matthew beckwith and I own a 2010 Jeep Grand Cherokee limited 5. 7l hemi here in kuwait. I have been working in kuwait supporting the warfighter since 2007. I purchased my nice well maintained Jeep in February 2018. I just reached 82,000 miles and on Monday September 2 2019 I was on the highway around 60-70mph when all of a sudden I heard a very subtle noise and I looked at my dash to see a check engine light and another light. At that point I had no power and I shifted into neutral. I tried restarting and could hear the starter turning over but it didn't start back up. Once I got to a safe place I tried again and still nothing. It was turning over with no bad sounds and seemed like it was turning over easily. I had the Jeep towed to a mechanic where they found 4 cylinders had no compression. They removed the heads to find some valves were visibly bent. When they tried turning the crank by hand they found the cam was not moving. Upon opening the front cover the timing chain had actually failed and was broken. I was very disappointed to say the least. I was hoping to have a nice car for a while and this Jeep was in very good shape. I have been researching and found there has been a recall for the same engine in other mopar vehicles and was hoping to get some insight if my Jeep like others I have read about would be able to go under that recall for the same problem. I think its something with the tensioner on the recall that ends up wiping out the timing chain. I don't really understand why they only put like 3 vehicles in the recall but if its the same engine why not fix them all. I really like my Jeep and hope to get more info of the recall. Respectfully, matthew.

This incident regards the t-36 recall issued by fiat/Chrysler, which involves 2012-2014 Jeep Grand Cherokees (among others), and "affects vehicles equipped with electro-hydraulic power steering systems, 5. 7l or 3. 6l engines, and 160, 180, or 220 amp alternators. In those vehicles, NHTSA says that the alternator may fail without warning. " during June 2018, my 2014 Jeep Grand Cherokee (summit trim), experienced sudden alternator failure while in motion on a highway. The alternator started to smoke, and by the time I had reached my destination, there was grey smoke barreling out of the hood of my car and the battery was completely dead. The Jeep had to be towed to a nearby dealership for repairs. In addition to the alternator and battery replacment, the tensioner, idler and serpentine belt had to be replaced due to undue strain placed on them by the alternator failure. The incident that occurred matches the description of the t-36 recall. Additionally, the year, make, engine size, and amperage of the alternator all match the description given in the t-36 recall. However, the VIN number for my particular Jeep did not appear under the recall, and therefore, Jeep/Chrysler would not repair my Jeep under that particular recall. They did fix the Jeep, but at my cost (the owner). I 100% believe this an oversight by Jeep/Chrysler (or maybe NHTSA) and should be remedied immediately. I do believe there are other Jeep owners that are unaware of this issue, due to the lack of notification by Jeep/Chrysler, and will experience the same issue, which could cause an accident and lead to injury. Please review the details of my Jeep VIN and why it was not included in the t-36 recall. If this happened to my Jeep, then I imagine it will happen to others. Fortunately, I was not injured, but others could be injured who are unaware of this issue. Please contact me with any questions.

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Sept 26, 2015 driving down the highway at about 65 mph in cruise control, my Jeep just died. Would not start or turn over the engine light oil light and ect light came on. Turns out the timing chain broke damaged intake valve on #2 cylinder and exhaust valve on #8 cylinder. Had the heads inspected valves and timing chain replaced. And new spark plugs, it had 100565 miles on it. Picked it up from the shop on Nov 13, 2015 ran perfectly no vibrations spark knock smooth. . Not even 200 miles on it and the same thing driving about 65 mph in eco mode and it just died. The engine light traction control light and ect light and oil light came on. Pulled over on the should it would not start. Had it towed back to the shop. . The same thing timing chain broke and two cylinders have no compression. The shop called the manufacturer of the timing chain and they are puzzled as well about the timing chain breaking so soon after being repaired. Something in the engine is causing extreme harmonics and/or vibration inside the engine and causing excessive force on the timing chain tensioner and guide. However, new parts simply don't break like this if everything is copacetic under the hood.

Pulling out from a parking lot, vehicle had no steering and no power. Driver heard a big bang and the tensioner fell out of the engine. The cherokee is being held at dealership.

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