Chrysler extends warranty on some 2011-13 V-6s - Dodge Nitro Forum
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post #1 of 3 (permalink) Old 08-14-2012, 07:41 AM Thread Starter
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Exclamation Chrysler to fix defect in V-6 engines

Aug 14, 2012
Chrysler to fix defect in V-6 engines




About 1,300 new Chrysler, Dodge, Jeep and Ram brand vehicles are in Chrysler dealerships awaiting maintenance because of defective cylinder heads, according to Automotive News.

The trade publication reports that a small percentage of Chrysler-built 3.6-liter V-6 engines — also known as the Pentastar V-6 — have defective cylinder heads. A cylinder head feeds and exhausts air from the engine block as well as delivers fuel to the cylinders and covers the combustion chamber. Chrysler has designed a new cylinder head and is replacing the unit on select vehicles that have experienced the problem.


The cylinder head problem cropped up in June, when several dealerships reported that some V-6-equipped Chryslers were experiencing early cylinder head failure, according to Allpar, a Chrysler enthusiast site. On an Allpar forum, some owners of new Chrysler vehicles have reported experiencing cylinder misfirings, check-engine light illumination and stalling after just 3,000 miles, presumably related to the defective cylinder head. On the forum, the cylinder head problem was most reported on the 2012 Jeep Wrangler, which received the new Pentastar V-6 for the model year.

The Pentastar is Chrysler's only V-6 engine for its 2012 cars and crossovers. There's a 3.7-liter V-6 on the 2012 Ram 1500 and 2012 Jeep Liberty, but the Pentastar is coming to both models for the 2013 model year, Allpar says. The V-6 has a rare cylinder head design in which the exhaust passages merge into a single outlet, whereas most engines have multiple exhaust passages in the head, according to Automotive News.

Chrysler is averaging more than 500 new service requests per week for cylinder head replacements, Automotive News says. In fact, demand for new cylinder heads is increasing so fast that Chrysler cannot keep up with it; there's currently a backlog of about 1,300 vehicles, says Automotive News. The problem has been discovered in about 7,500 Chrysler V-6s, and there could be more, the publication reports. Chrysler is giving owners free rentals while it fixes the defective motors, says the trade publication.

Chrysler has declined to describe the full nature of the cylinder head problem or its method of fixing the issue to Automotive News. The cylinder head fix will be covered by each new vehicle's powertrain warranty.

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post #2 of 3 (permalink) Old 06-16-2014, 08:12 AM Thread Starter
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Exclamation Chrysler extends warranty on some 2011-13 V-6s

June 16, 2014

DETROIT -- Chrysler Group will extend the warranty for consumers who bought certain 2011-13 vehicles with 3.6-liter V-6 Pentastar engines.

The left cylinder heads of a small percentage of the engines have cracked.

Quote:
The company will extend its engine warranty on the left side cylinder head to 10 years or 150,000 miles. The remaining engine components will continue to be covered by the automaker's 5-year/100,000-mile powertrain warranty.

In 2012, about the time Chrysler was instituting its design change, executives said that roughly 7,500 engines were susceptible to the cylinder head failure. A spokeswoman for the company last week declined to say whether that estimate is still valid.

Chrysler discovered the problem in 2012 after customers began complaining that their new vehicles were exhibiting a "ticking sound" or stalling, and a check engine light illuminated.

Doug Betts, head of quality for Chrysler, told Automotive News in 2012 that the problem had been found in about half of 1 percent of vehicles with the Pentastar engine. Chrysler would not say whether the percentage of affected engines had since changed.

The 3.6-liter V-6 Pentastar is the automaker's main V-6, and is standard in several of its top-selling models, including the Jeep Wrangler and Grand Cherokee.

The company's investigation continued for months, and traced the problem to an unusual combination of factors including low-quality fuel and certain driving conditions.

"A small percentage of these 2011-2013 model year engines may be susceptible to an engine misfire which is caused by a combination of rarely occurring factors, including drive cycle and fuel quality," Chrysler wrote in a statement last week announcing the extended warranty. "The issue does not disable the engine. Dealers will replace the left cylinder head with a new part with a minor design modification."

Chrysler said it made the design modification in August 2012 and a spokesman said the company has not had any reports of the problem occurring in engines manufactured after that time.
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post #3 of 3 (permalink) Old 06-17-2014, 07:19 AM Thread Starter
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Pentastar V6 Still Prone to Cylinder Head Failure

Pentastar V6 Still Prone to Cylinder Head Failure

06/17/2014

After Chrysler replaced the cylinder heads on 7,500 vehicles equipped with the Pentastar V6 back in 2012, the automaker announced it will extend the warranty coverage on each and every car fitted with the 3.6-liter six-cylinder to 10 years or 150,000 miles, whichever comes first.

Further more, the auto manufacturer still doesn't want to issue an official recall and replace the badly designed cylinder heads of the thousands of cars affected. Instead, Chrysler will offer free repairs for owners that experience cracks with the left side cylinder head.

Quote:
In terms of eligibility, the carmaker offers free of cost repairs and the extended warranty only on vehicles from the 2011, 2012 and 2013 model years. Some of the vehicles that are powered by the 3.6-liter Pentastar V6 are the Ram 1500 pickup truck, Jeep Grand Cherokee and Wrangler, Chrysler's 200, 300 and Town & Country models, as well as lots of Dodge-branded cars such as the Challenger, Charger, Journey, Durango and Grand Caravan.

Chrysler explains that it won't issue a formal call back operation to fix this glitch because if the cracks are to occur, the engine will still work in a rough, misfiery manner. Dealership service department will fix cracked left cylinder heads by replacing them with a newly developed component. Other engine components which may not operate properly will be replaced as well, with Chrysler offering a 5-year/100,000-mile warranty for them.

As a brief reminder, the Chrysler Group found out about this fault a couple of years ago after several customers complained that their all-new sub 1,000-mile vehicles were producing an intrusive "ticking sound" at idle.
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