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I had the Emissions Recall flash done to my 2014 Jeep Grand Cherokee Ecodiesel. The update was successful. After the recall, I have nothing to complain about with the performance of the vehicle. The vehicle drives the same in my opinion. In fact, the vehicle seems to have quieted down a bit during idle--that's good. Now, I am growing a bit concerned in the fuel economy area. In the first week of driving am seeing about a 2+ mpg drop in fuel economy in my city driving routine. The car, prior to the emissions update, always seemed to deliver around 22.3 mpg, now I am seeing this number falling below 20 mpg. I am relying on the car computer for these values.

The letter inviting the emissions recall was a little vague on the fuel economy impact. Has anyone else noticed a reduction in mpg since having their jeep updated?
 

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I have a hesitation now when accelerating from a stop, sometimes two when shifting into second. Sometimes I now have a miss as if an injector is blocked on acceleration yet no engine codes. Milage is about the same. It always varied one or two , city and highway with conditions driven under. It's not an exact science.
 

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Recall flash done on my 2014 JGC a month ago and lost 2 mpg on highway driving. Mostly drive local and is too soon to tell overall mpg. Appears to have more turbo lag than before and less torque at lower speeds. When I first got the JGC in 2014 brand new it had more power and torque. It has had several updates since then and I think every time it takes a little more away from the performance. Still more torque, power and mpg than a gas six but it is annoying that the full potential is taken away.
 

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Had the emissions recall performed, and 3 weeks later got a warning on my dash "exhaust filter almost full, drive at highway speed to recharge". Next day it said "exhaust filter full, see dealer". Went to dealer, they "recharged" the exhaust filter, and all was fine for a week. Today have the same message. At the same time, noticed a heesitation at low speeds, then got a second warning about the automatic throttle control. Not sure I want to take it back weekly until they figure this out. Certainly linked to the recall reprogramming. Anyone else have this problem?
 

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I had the Emissions Recall flash done to my 2014 Jeep Grand Cherokee Ecodiesel. The update was successful. After the recall, I have nothing to complain about with the performance of the vehicle. The vehicle drives the same in my opinion. In fact, the vehicle seems to have quieted down a bit during idle--that's good. Now, I am growing a bit concerned in the fuel economy area. In the first week of driving am seeing about a 2+ mpg drop in fuel economy in my city driving routine. The car, prior to the emissions update, always seemed to deliver around 22.3 mpg, now I am seeing this number falling below 20 mpg. I am relying on the car computer for these values.

The letter inviting the emissions recall was a little vague on the fuel economy impact. Has anyone else noticed a reduction in mpg since having their jeep updated?
No change in my fuel economy, however:

Had the emissions recall performed, and 3 weeks later got a warning on my dash "exhaust filter almost full, drive at highway speed to recharge". Next day it said "exhaust filter full, see dealer". Went to dealer, they "recharged" the exhaust filter, and all was fine for a week. Today have the same message. At the same time, noticed a heesitation at low speeds, then got a second warning about the automatic throttle control. Not sure I want to take it back weekly until they figure this out. Certainly linked to the recall reprogramming. Anyone else have this problem?
 

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No change in my fuel economy, however:

Had the emissions recall performed, and 3 weeks later got a warning on my dash "exhaust filter almost full, drive at highway speed to recharge". Next day it said "exhaust filter full, see dealer". Went to dealer, they "recharged" the exhaust filter, and all was fine for a week. Today have the same message. At the same time, noticed a heesitation at low speeds, then got a second warning about the automatic throttle control. Not sure I want to take it back weekly until they figure this out. Certainly linked to the recall reprogramming. Anyone else have this problem?
Yep same here. First was filter nearly full, then filter full take to dealer. It was over the weekend, then a service electronic throttle something, went into limp mode. Took to dealer to blame on recall reflash. They said it was y related, installed a new catalyst said I was lucky it was still under warranty at <80k miles. I also get the real sluggish acceleration from dead stop.
 

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just a called to bring my 14 GC in for an unrelated issue and they want to do the recall. I think I'll be skipping I've read enough. And Im Canadian so no extended warranty no 3500 paid out.
 

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I had the Emissions Recall flash done to my 2014 Jeep Grand Cherokee Ecodiesel. The update was successful. After the recall, I have nothing to complain about with the performance of the vehicle. The vehicle drives the same in my opinion. In fact, the vehicle seems to have quieted down a bit during idle--that's good. Now, I am growing a bit concerned in the fuel economy area. In the first week of driving am seeing about a 2+ mpg drop in fuel economy in my city driving routine. The car, prior to the emissions update, always seemed to deliver around 22.3 mpg, now I am seeing this number falling below 20 mpg. I am relying on the car computer for these values.

The letter inviting the emissions recall was a little vague on the fuel economy impact. Has anyone else noticed a reduction in mpg since having their jeep updated?
I have a 2014 Jeep Grand Cherokee with 57,000 miles. When I purchased the vehicle I would get 28 mph on the highway and around 22 in the city. Over they years with all the update my mileage started to drop. Once I got the emission update my mpg dropped about 3-4 miles in the city. I recently took a trip that was 350 miles, all highway, and I averaged 19 mpg. I called the customer relations at FCA and they admitted that the mileage would drop and my cars mpg loss was on the high side. He also said they have had numerous calls from owner regarding the loss in mpg.
 
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