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79 of 184 people found this review helpful
Chryslers new 3.6-liter Pentastar V6 engine is garbage
By sadconsumer on
Vehicle
2011 Jeep Grand Cherokee Laredo 4dr SUV 4WD (3.6L 6cyl 5A)
Review
We bought our 2011 Grand Cherokee Laredo 4X4 in December 2010 and it has been in the shop on and off for weeks since be bought it, with major engine related problems. It only has 13000 KM on it and it blows black smoke out of the exhaust when it is started and sounds like an old diesel engine when it runs. The front crankshaft pulley came apart grinding the remaining pulley against the engine block (Chrysler called it "engine crankshaft damper problems" and "harmonizer balancer issues") and most recently the engine was "pulling in too much fuel" and Chrysler informed us the oil separator and PVC valve would need to be replaced. The gear shifter has broken, and further damaged by the dealer 4 months ago and still has not been repaired due to "a lack of replacement parts" and the engine has had declining performance since about 5000KM. We didn't just get a lemon because we found out that in fact other 3.6-liter Pentastar V6 engines have come in with the same problems and there have been technical service bulletins released by Chrysler on these issues on other Grand Cherokee's. This engine is scheduled to go into many more models in 2012 and I would strongly recommend to avoid this engine at all costs. Chrysler supposedly spent years developing this new engine and have high hopes it will pull this automaker out of financial ruin but they should have spent a little more time because it is full of problems and will no dought cost anyone unfortunate enough to buy one a fortune. Chrysler hasn't been willing to do anything to help and we continue to have out of pocket costs add up.
Favorite Features
Looks good but runs terrible. If you just want to park it in your yard and look at it, it is great but if you plan on driving it, forget it, as this is beyond what it can handle. Oh ya, the stereo sounds good, since there is no road noice in my driveway.
Suggested Improvements
Ditch the 3.6 liter Pentastar V6 engine it is unreliable and full of major flaws. Chrysler needs to learn how to provide customer service. Chrysler should just go out of business and save thousands the unpleasant experience of buying one of their poor quality vehicles. This new 3.6 liter Pentastar V6 will likely be the final nail in Chrysler's coffin. Thank heavens.
Recommend (79) (105)
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Comments (4) Post a Comment
By sadconsumer
on 07/23/11 10:08 AM (PDT)

We just got more news on our 2011 Grand Cherokee V6 from Chrysler....now the camshaft is being replaced along with the pvc valve and the engine may have been running without adequate oil for the last 5 or 6000 km. They are still not replacing the negine and still can not tell us when we will get our vehicle back or the extent of damage to the engine.

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By chazz11bravo
on 03/21/12 14:55 PM (PDT)

Not an engine issue? Haha!

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By mdellyd
on 02/19/12 17:02 PM (PST)

You know, cars do ocassionally have engine problems, but that does not mean the engine itsself is junk.

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By fastdude
on 10/21/12 05:17 AM (PDT)

Well very interesting comments about that engine. Now I bought a 2012 Jeep Grand Cherokee Laredo X with the 3.6. So far I drove 12000 miles (19000km) in 6 month. I found the engine lacking power, specially in the low rpm range which was very frustrating when climbing a hill or accelerating onto a highway. I added a Magnaflow cat back, cold air intake and it made a big difference when it came to more power in the low rpm range, specially between 2 and 3k. The bottom line is, the engine works very well, but it feels underpowered do to the weight of the Jeep. The 5 speed auto transmission is useless, the gearing is way to low which makes the engine work very hard.

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