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  #1  
Old 06-17-2014, 01:45 PM
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Oppo Review Of GC

I wrote up a brief review of the Diesel Grand Cherokee and posted it here:

2014 Jeep Grand Cherokee Diesel: Oppo Review

Since many there expressed interest in knowing more.
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  #2  
Old 06-17-2014, 03:46 PM
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Re: Oppo Review Of GC

Overall a very fair review. However, IMHO, you WERE a little nitpicky about the 0-60 times, especially when this is a heavyweight diesel 4x4 !

You should try torqueing it up at the lights!!!
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Old 06-17-2014, 04:39 PM
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Re: Oppo Review Of GC

Quote:
Originally Posted by iced98lx View Post
I wrote up a brief review of the Diesel Grand Cherokee and posted it here:

2014 Jeep Grand Cherokee Diesel: Oppo Review

Since many there expressed interest in knowing more.
I read your review with interest
In Australia we have limited choices and our base prices are much higher than you guys in USA (due to government charges, levies, Taxes and any other profiteering the dealers can gouge out of us) but having said that the Jeep Grand Cherokee is great value for money so that is the only review i can agree with you.

I think you were a little hard on your assessment points and would say as an overall comment that the Jeep GC is simply the best on road vehicle i have ever owned ( and i have had a full range of vehicles)
Off road it is not a Nissan patrol and falls behind in that area but still capable
Power from the VM diesel is fantastic delivering a smooth power base, better than the V8 Hemi with lower fuel consumption.
My biggest complaint is that i brought the Jeep as a tow vehicle due to its power and its towing capacity of 3.5 ton tow capacity.
Yes it will tow that weight with ease BUT and this is the big one i hate towing my 3 ton caravan with it when attempting to climb a reasonable size or bigger hill mountain, it's temperature gauge on seeing the hill begins to rise immediately and stay veery close to the RED line all way up.
It is alarming to say the least
My dealer has at each service checked this out and tells me it is with in specs. But i now hate towing with this vehicle. I can't seem to get any answers from Jeep Australia do the australian GC's get a larger radiator and or towing package as it seems you do in America.

Other than that it is fantastic vehicle. But for a tow vehicle no way would rather a Toyota Land cruiser which is about $15,000 or more but is a better tow vehicle.




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Old 06-17-2014, 05:27 PM
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Re: Oppo Review Of GC

We have noticed the temperature rise on NA models as well. The consensus is that the vehicle needs to be paddle shifted so RPMs are in the 2k-2.5k range and throttle limited to 60-70%. The cooling system is not designed for sustained low rpm high torque situations like climbing a long grade. With RPMs in the midrange, more coolant is moved through the system and this seems to help. Towing in hills using Sport mode moves the shift points up as well.

To the OP's review....0-60 should be judged using power braking to launch. This eliminates turbo lag and gives a better measure of how the vehicle accelerates under power. My GC has a tuner box on it and will outrun a stock Hemi with 0-60 at 6.7 sec.
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Old 06-17-2014, 09:51 PM
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Re: Oppo Review Of GC

Excursion Diesel. I just got the Bluespark pro and had a go at hook up this evening. The boost connector detatches easily but the rail connector is tight against the vehicle bulkhead and is fitted upside down, so the clip realease is almost impossible to get to. Is there a trick to get this off? I tried for a good while to get to the clip release but gave up. Any tips appreciated.

Thx.
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Old 06-18-2014, 02:51 AM
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Re: Oppo Review Of GC

I had to use a long shanked skinny flat head screwdriver to press the release tab if I recall correctly. Seems like I came at it from the side and was able to use the tip to pry the latch by "camming" the tip (twisting the screwdriver with tip lodged in the connector latch). You'll get it.

BTW...set the tuner from E7 to E9. That is by far the best setting IMO. You may get a CEL on E8 or E9 for "too rich"...some do, some don't. E7 is as high as I can go without a CEL. Get a bluetooth ODB2 adapter and Torque app for 30 bucks total and you can reset codes and see EGT temps.

This little 3.0 is a very willing motor when you wake it up!
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Old 06-18-2014, 07:32 AM
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Re: Oppo Review Of GC

Posted a response in the blog as well:

This is helpful about the WK2 Ecodiesel



You can improve 0-60 times if you shut off Eco mode. My best MPG to date is 34.4 mpg doing 60 mph. Also got 16.4 mpg towing a 7k lb enclosed trailer through the Poconos.
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Old 06-18-2014, 08:51 AM
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Re: Oppo Review Of GC

Quote:
Originally Posted by fwdjeep View Post
I can't seem to get any answers from Jeep Australia do the australian GC's get a larger radiator and or towing package as it seems you do in America.
Ours come with the tow package (minus actual tow bar) as standard.
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Old 06-18-2014, 09:57 AM
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Re: Oppo Review Of GC

Thanks for the comments everyone. Some feel I was a little too harsh on the Jeep on some points like acceleration so despite reporting the 8.0 0-60 times I thought I'd share what I used as a bench mark, a 2007 Rav4 V6.

We have both, and access to a 1/4 mile of private concrete, so it was an easy test. I put the GC in Sport mode (removing eco etc) power braked best I could and did a genuine 1/4 mile drag race vs the two. The Rav put several paces on the Jeep, but the jeep was closing ground by the end.

The rav is reported to do 0-60 in low 6's so it should have beat the GC handily off the line (and did) but was being closed on by the 1/4 mile mark. According to published 1/4 mile times the jeep should have been 2 seconds behind- it wasn't that far back.

That being said, 75/100 is a fantastic score on that review system, and I believe the Jeep is about the best all-rounder you can buy right now. 30's MPG on trips, mid teens pulling, torque for days, roomy, quiet... Of course, I bought one so that probably makes my preference obvious and we put it up against the ML350 BluTec.
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Old 06-18-2014, 10:55 AM
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Re: Oppo Review Of GC

Iced98LX, I agree with your concern about the rise in the temperature guage when towing up inclines, but I am persuaded both by my expeience and by many other responses on these threads, including the separate thread on "Transmission and Oil Temperatures") that this is a manageable (if still annoying) concern. As reported on other threads, we had this experience towing a 4500 lb TT over the most serious Rocky Mountain passes -- 7% and 8% inclines for many miles up to 10,000 and 11,000+ feet. After becoming alarmed, we learned that the temperatures leveled out okay if we held the car to about 2000 to 2500 rpms (still plenty of power). The oil temp steadied at 246 F and the temp needle steadied at the halfway mark in the third quadrant. I had the oil changed right after the trip, and the dealer said it was fine, showing no signs of heat or stress.

I found a video of the GC ecodiesel being tested on the incline up to Loveland Pass (one of the ones we went up). You can find it searching under"2014 Jeep Grand Cherokee Diesel Takes on the Extreme Ike Gantlet Towing Test". It is also at the website wltx.com and also at www.TFLcar.com. For the test, it appears that these guys just floored it and did not try to control for the temperature. They noticed how the temp climbed into the hot zone and reported that the oil temp reached 273 F. But what actually gave me some reassurance is that the car did not in fact overheat at this higher oil temperature, and other commentators have said that the diesel synthetics are okay at that temperature, that the coolant is also okay, and that the diesel engine is made to run that hot on occasion. I actually wonder if the coolant guage is a little too sensitive. I am keeping my eye on the threads about this issue, but for now I am comfortable managing this concern by paying attention to the rpms on steep inclines and not letting this issue diminish my overall extreme satisfaction with the car.
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Old 06-18-2014, 12:33 PM
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Re: Oppo Review Of GC

To you guys that tow, it would be interesting to watch the reported water temperature from an ODB2 monitor vs the gauge. I suspect it is too sensitive. Other manufacturers intentionally calibrate their gauges so people don't complain about overheating. Ours seems to be more sensitive.
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Old 06-18-2014, 12:50 PM
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Re: Oppo Review Of GC

Nice review on your link iced98lx. I noticed the photo in the review that showed the Select Terrain knob included a "Select Speed" button on the lower left corner. This feature was not available on the early Diesels as it came with the V8 only.

My Limited was built on 12 Sep 13 and shipped with the "Hill Descent Control" button with the arrow pointing downward, and a "BNHP" build code. I would like to add this feature if possible, and I wanted to know if you had your build code for "Select Speed" and your build date.

Thanks for any help!
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