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  #877  
Old 12-11-2013, 05:53 PM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

Personally, I think financially it works out to offer savings when compared with the Hemi, but not with the V6. Since I knew I personally wanted more power than the V6 had after a few test drives (not that it was bad, but I wanted a little more umph!), it made it a pretty easy decision for me to move to the Diesel
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  #878  
Old 12-11-2013, 06:20 PM
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Originally Posted by _Bryan_ View Post
Personally, I think financially it works out to offer savings when compared with the Hemi, but not with the V6. Since I knew I personally wanted more power than the V6 had after a few test drives (not that it was bad, but I wanted a little more umph!), it made it a pretty easy decision for me to move to the Diesel

I love the diesel, but have to admit that part of my reason was to get the heavier duty tranny. Yeah, the cost was more and the fuel is higher, but the piece of mind and driving pleasure is priceless.
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  #879  
Old 12-11-2013, 07:19 PM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

I'm averaging 28 mpg with the CRD. Doing exactly the same type of driving with my 2011 GC Hemi I averaged 18mpg. Averaging over 20,000 miles per year plus the refinements the 2014 has (better transmission, etc.), there's just no comparison. My dealer had a nice Cashmere GC Limited CRD that sat on his lot for two weeks until a neighbor saw mine and listened to my sales pitch. He's now the proud owner of a new CRD and very happy with it. I told the Dealership Owner the main reason the CRD hadn't sold was his sales staff's lack of knowledge and enthusiasm regarding CRDs. When I first inquired about ordering one, the sales person said "You don't want one of those, the diesel option cost to much and the payback will be forever. Why don't you test drive one of these nice V6 models we have on the lot."
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  #880  
Old 12-11-2013, 07:42 PM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

You either are or are not a diesel guy. My SO just shakes her head, fuel costs more, price was higher but again it isn't a need it is a hybrid need/want. I am a little more than a month away from getting mine and I did test drive one to be sure it was living up to expectations. The only thing I don't like is the C pillar blind spots which is why I wanted the blind spot sensors.
I will be one of the guys that wanted the range capability.
The 28mpg seems right to me as my SD diesel got a solid 17.5-19.1mpg all day long no matter what the speed except when driving 45 which gave me almost 21mpg. So if an older technology 7000 pound beast with a cD of what .50 and wetted area about the size of a one car garage can pull those numbers the JGC should do really well. As I reported before you can expect based on my 10 years driving the SD a reduction of 30% in the winter.

I am glad to hear the reports of the good fuel mileage and once warmer again we should all get great mpgs compared to the gassers out there...
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  #881  
Old 12-11-2013, 09:19 PM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

My EVIC shows an avg of 24 mpg. I'm in Colorado where the temps have been very cold over the past 7-8 days. I drove it from CO Springs to Boulder, 2 trips into the mountains via I-70 and three days of around town driving. I too hope that it gets better but I'm not disappointed. At 24mpg its economy is better than my previous car (Audi A4) and really just destroys the mountain roads.
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  #882  
Old 12-12-2013, 12:18 AM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

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Originally Posted by Matt'sGC View Post
I am also getting much lower MPG's in the cold weather, just not as low as yours. I'm getting 20-21. I travel 21 miles one way to work with a lot of stop and go's.
This did bother me at first, but then I remembered my last vehicle only got 12 MPG and didn't have 4WD. (Full size conversion van)
Same here.

I average about 90% city driving and I've gone from about 20-22mpg to around 18-19mpg since the weather turned.

My old car was was rated at 16/28 and I was getting far worse mileage with the type of driving I did (city mainly). I was averaging a constant 12mpg. I've found the the diesel's estimates to be conservative and my old FI engine's estimates to be a bit inflated. Considering I had to fill it with premium (which is about 10-20 cents cheaper than diesel here), it's a no brainer cost-wise.
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  #883  
Old 12-12-2013, 03:17 PM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

Sorry to break the MPG topic but I have a good news (for me) and a question.

The good news: I picked up my repaired SFU from a dealer (2 hours away in Harrisburg, PA) last night after waiting 2 weeks for a part. Instead of waiting 6 weeks for a urea injector to be delivered, the regional parts manager had them pull an entire DEF system from production and shipped to the dealer repairing my truck. Huge appreciation to the Freedom Jeep dealership even though they did not sell me the truck. Apparently, DEF system parts are shipped to the factory as an assembled system and if you are going to get a part from production, you have to take the entire system not just the needed part. Either way it worked for me.

The question: During the 2 hour ride back, despite them having fixed the heating system (recalibrated and upgraded the software/firmware) at the same time, I was still having problems with my heater. Many of you live in climates colder than me, are you having this problem? Peter K is the only other person I have found. I rode back with the outside temperature mostly around 19 degrees and, once the car warmed up, the inside temperature set to 84. Once the truck warms up, the heater periodically stops and the vents start blowing cold air. You wouldn't notice this on a trip of 20-30 minutes or less as the truck is still warming up.

Somewhere I read that the truck is supposed to maintain temperature like a house. Alternating heat and cold air to maintain a constant cabin temperature. However, no matter how you slice it, there we are in 19 degree outdoor temperature, the truck set to 84, and the wife expressing her great satisfaction that cold air is blowing on us. This can't be how the heater is supposed to function, is it?

My work around was to set the temp on high (the only way to keep the heat blowing), set the fan to low, have it vent to the foot area only. Every 15 minutes or so you turn the heat “down” to 84 at which point it will blow cold air until you can tolerate turning the temp back up to high. Any advise or knowledge about this is appreciated.
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  #884  
Old 12-12-2013, 03:20 PM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

That sounds pretty goofed up to me... mine hasn't exhibited that sort of behavior.
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  #885  
Old 12-12-2013, 03:31 PM
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Quote:
Originally Posted by kaziii View Post
Sorry to break the MPG topic but I have a good news (for me) and a question.

The good news: I picked up my repaired SFU from a dealer (2 hours away in Harrisburg, PA) last night after waiting 2 weeks for a part. Instead of waiting 6 weeks for a urea injector to be delivered, the regional parts manager had them pull an entire DEF system from production and shipped to the dealer repairing my truck. Huge appreciation to the Freedom Jeep dealership even though they did not sell me the truck. Apparently, DEF system parts are shipped to the factory as an assembled system and if you are going to get a part from production, you have to take the entire system not just the needed part. Either way it worked for me.

The question: During the 2 hour ride back, despite them having fixed the heating system (recalibrated and upgraded the software/firmware) at the same time, I was still having problems with my heater. Many of you live in climates colder than me, are you having this problem? Peter K is the only other person I have found. I rode back with the outside temperature mostly around 19 degrees and, once the car warmed up, the inside temperature set to 84. Once the truck warms up, the heater periodically stops and the vents start blowing cold air. You wouldn't notice this on a trip of 20-30 minutes or less as the truck is still warming up.

Somewhere I read that the truck is supposed to maintain temperature like a house. Alternating heat and cold air to maintain a constant cabin temperature. However, no matter how you slice it, there we are in 19 degree outdoor temperature, the truck set to 84, and the wife expressing her great satisfaction that cold air is blowing on us. This can't be how the heater is supposed to function, is it?

My work around was to set the temp on high (the only way to keep the heat blowing), set the fan to low, have it vent to the foot area only. Every 15 minutes or so you turn the heat “down” to 84 at which point it will blow cold air until you can tolerate turning the temp back up to high. Any advise or knowledge about this is appreciated.
Mine does the same thing. When I picked it up in November and was driving fire the first few weeks the outside temps were in the lie 50's and I had the inside temp set at 66. The air coming out was hot. I dropped the temp to low and waited for the air to go cold and adjusted the temp warmer. Now that's it's in the low teens here I have the temp at 72/74 and it goes cold every now and then and then back to warm. I don't think this is right either.
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Old 12-12-2013, 06:07 PM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

Quote:
Originally Posted by kaziii View Post
Sorry to break the MPG topic but I have a good news (for me) and a question.

The good news: I picked up my repaired SFU from a dealer (2 hours away in Harrisburg, PA) last night after waiting 2 weeks for a part. Instead of waiting 6 weeks for a urea injector to be delivered, the regional parts manager had them pull an entire DEF system from production and shipped to the dealer repairing my truck. Huge appreciation to the Freedom Jeep dealership even though they did not sell me the truck. Apparently, DEF system parts are shipped to the factory as an assembled system and if you are going to get a part from production, you have to take the entire system not just the needed part. Either way it worked for me.

The question: During the 2 hour ride back, despite them having fixed the heating system (recalibrated and upgraded the software/firmware) at the same time, I was still having problems with my heater. Many of you live in climates colder than me, are you having this problem? Peter K is the only other person I have found. I rode back with the outside temperature mostly around 19 degrees and, once the car warmed up, the inside temperature set to 84. Once the truck warms up, the heater periodically stops and the vents start blowing cold air. You wouldn't notice this on a trip of 20-30 minutes or less as the truck is still warming up.

Somewhere I read that the truck is supposed to maintain temperature like a house. Alternating heat and cold air to maintain a constant cabin temperature. However, no matter how you slice it, there we are in 19 degree outdoor temperature, the truck set to 84, and the wife expressing her great satisfaction that cold air is blowing on us. This can't be how the heater is supposed to function, is it?

My work around was to set the temp on high (the only way to keep the heat blowing), set the fan to low, have it vent to the foot area only. Every 15 minutes or so you turn the heat “down” to 84 at which point it will blow cold air until you can tolerate turning the temp back up to high. Any advise or knowledge about this is appreciated.
I believe mine does the same thing. In town on short trips I have it set to 70 and it gets too hot but then on longer trips on the hwy it seems to cool down after about an hour of driving and feels like cool air blowing out. I haven't really messed with it as I've only done a couple trips more than hour so far but will keep an eye on it and report back.
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  #887  
Old 12-12-2013, 07:43 PM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

Quote:
Originally Posted by kaziii View Post
During the 2 hour ride back, despite them having fixed the heating system (recalibrated and upgraded the software/firmware) at the same time, I was still having problems with my heater. Many of you live in climates colder than me, are you having this problem? Peter K is the only other person I have found. I rode back with the outside temperature mostly around 19 degrees and, once the car warmed up, the inside temperature set to 84. Once the truck warms up, the heater periodically stops and the vents start blowing cold air. You wouldn't notice this on a trip of 20-30 minutes or less as the truck is still warming up.
My SFU exhibits similar behavior. During the last few days the temperatures here were also in the 20's. The vehicle would run hot air through the vents and would overshoot the set temperature (set to 65F with a cabin ambient reaching 73F) and then run lukewarm air. It's not cold outside air (20F), but about 50F. If you shift the air direction away from you, the cabin temperature feels quite constant and comfortable. This leads me to believe that the temperature control is a closed loop, sensing either ambient cabin or inside air inlet (which are quite similar).
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  #888  
Old 12-12-2013, 08:45 PM
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Re: Welcome ALL 2014+ Jeep Grand Cherokee Ecodiesel owners!

Most of these systems use two sensors. One that is usually by the climate control unit itself and has a little 1"x1" grill on it with a small fan that runs when the CCU is running then a top sensor usually someplace on top of the dash.
I don't have my unit yet but what you guys report sure isn't a very good system control effort. I am sure Jeep knows about this and I wonder if this is somehow tied in to Uconnect and that the processor in the system is just lazy or the sensors are not reporting correctly.
Even the cheapest of cars that have auto climate control work well. This isn't a good sign for us...
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