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Jeep Liberty Diesel

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Comments

  • moparbadmoparbad Member Posts: 3,870
    Quote Karl The diesel thing is cool if you get a good one. I drove the Liberty version recently and was not impressed. Except for not smelling, it still suffered from many of the bad things diesels are known for (loud, unrefined, lack of low-speed acceleration, etc.). I do like the Mercedes and Volkswagen diesels. I would love to see more European makers offer them, as they seem the foremost experts.

    Karl is entitled to his opinion, however, the Liberty CRD is quicker than the V6 gas Liberty. Secondly, low speed acceleration is what the diesel Liberty torque monster excels at. 295 lb ft of torque at 1800 rpm. Off the line this Liberty is QUICK.
    I am not impressed at all with Karls opinion.
    Unrefined??? Very controlled and unobtrusive vibration of engine, smooth acceleration, minimal sound, excellent gearbox (the five speed automatic is very, very, good) is my opinion of the CRD. What is unrefined about the CRD?

    Noisy? OK, 59 dBA at idle, 79 dBA full throttle, 74 dBA 60 mph. The sound level is unrefined. Quieter than diesels in 3/4 trucks, not quiet enough to win the hearts of people used to gasoline engine sound levels.
  • caribou1caribou1 Member Posts: 1,354
    Besides myself, you're the first person who likes the automatic!
    If you want to get a real kick about the torque, get a Spanset around a telephone pole and fix it to the truck. Engage low gear and let go at idle speed. You will normally rip the 4 tires before you reach 1600 rpm! It feels like having a huge DOG at the end of a leash when it sees a cat. No gasser will give you that kind of feeling close to idle speed.
  • spetespete Member Posts: 73
    I've had my Liberty diesel for 6 weeks now = 2100 miles and average 20-21 with daily short trips and on a 700 mile round trip into Michagan from Wisconsin averaged 27.6 MPG. On that trip - even with the higher price of diesel fuel I figure I save about $16.00 over having a gas unit that gets around 20 MPG. I am happy with the fule economy - the torque and power are great!

    spete
  • spetespete Member Posts: 73
    I agree - my past experience with diesel engines - both highway vehicles and farm tractors - is that there is a longer "break-in" period with them - and that the fuel efficiency usually gets better as the hour meter goes up - we'll see. My Liberty came with 16" wheels - should I have expected better MPG by ordering 17"? I also appreciate the info on extra keys - I also thought Chryser's price was a little steep for a spare key fob.

    spete
  • tidestertidester Member Posts: 10,059
    get a Spanset around a telephone pole and fix it to the truck. Engage low gear and let go at idle speed.

    I believe that would be illegal - at least it would be in the U.S.

    tidester, host
  • sebring95sebring95 Member Posts: 3,241
    Yes, and we're such law-abiding citizens :P

    I was pulling fence posts with my old Cherokee and those big 6" ones that are 3' deep will hold you steady without a lever on the chain. Doesn't have to be a telephone pole!
  • silverminersilverminer Member Posts: 15
    I'm in the midst of a similar transmission problem. I just picked up my new Limited CRD in Denver after waiting around 6 weeks or so. At around 600 miles the engine light went on. The manual said to go through a few drive cycles to see if the light would go off. It did...I was happy. Then it came on again! I also started to notice that occasionally the transmission wouldn't shift into 5th or, for that matter, 1st gear. I took it to the nearest dealer and there she sits. They indicated they are waiting on Chrysler Engineering to figure out what the problem is. Scary and depressing.

    On a lighter note, I took the Lib from Denver to my cabin in the mountains at 10,000 feet. Awesome torque! The Lib went into 5th and crawled up the passes, never needing to downshift. About 23 mpg on the first tank. Not bad considering it was a totally new engine and I also did some 4-wheeling.

    I was very, very impressed with the vehicle. I love the torque, the ride, and the look. I've also had a 2000 Jetta TDI and a 2003 Beetle TDI for my daughter. Both consistently got 50+ mpg on the highway and around 42+ mpg around town. The TDI was definitely quieter but I love the sound of the Lib. I just hope reliability doesn't become an issue.
  • carlstuckeycarlstuckey Member Posts: 6
    Has anyone had their Lib CRD on the scales? It feels heavier than my Grand LTD V8.
  • caribou1caribou1 Member Posts: 1,354
    I only had in mind to have the 4 wheels of the truck on asphalt. By the way, telephone posts are made out of profiled concrete over here. So if someone gets caught trying to pull one out, authorities will just laugh !
  • badnessbadness Member Posts: 242
    Hey Caribou,I just Returned from Dublin Monday nite and their diesel was at 96.0 too 99.1 euro, hope this helps you out,and Now I know why the they all walk to work and take cab or bus. I walked almost 20 miles just walking to pubs and it was faster to walk.but the little compact cars are to small for me.
    take care pal,
    NJ, USA
    ps, they make some great beers!!!
  • pttrilliumpttrillium Member Posts: 62
    Mine has 750 miles on it. I am experiencing around 20 in town driving and no better than 24 on a couple of highway trips so far. We refilled the tank and I think the fuel has an effect on the sound the engine makes under mild acceleration. Since the first refill, it isn't as quiet as when I picked the car up or as smooth and under heavy acceleration it blows lots of smoke which it didn't seem to do on "tank 1". Hopefully it's just a case of truckstop fuel quality issues.

    The disapointing thing that has cropped up is a little vibration and noticable and objectionable sound coming from what seems to be the tail pipe or rear muffler. You can hear it on the outside and really hear it on the inside of the vehicle.

    It is worse when the a/c is turned on and only happens when stopped at a light and in 'drive'. I looked at 2 of the exhaust hangers and they seem fine, I was surprised to see that they had been greased. Someone was serious about making it as quiet as possible.

    I have an appointment with a very nervous service department tomorrow. I think I'm their first problem. We'll see how it goes.
  • willysjeepwillysjeep Member Posts: 107
    Anyone have experience of Summer mileage versus Winter mileage?

    I assume that fuel purchased in Summer will have a higher ratio of #2 fuel oil to #1. Number 2 has more BTUs per gallon (or liter,....I guess that would be kilocalories per liter.) More BTUs should mean even better mileage. So, although I've received pretty good mileage from the machine so far, I'd like to see if I can expect better on long Summer trips.

    Wow! $5.72 cents a gallon. They should have good roads in France with all of that extra tax money tacked on.
  • caribou1caribou1 Member Posts: 1,354
    In the states you are supposed to get B5 diesel in the first tank if publicity is observed. This gives you a 'smoother' running engine in principle. When I went for 25,000 miles service the mechanics wanted to add a little bottle of cetane booster that I refused since I already had B5 diesel in the tank. I believe this is a commercial trick to show you how well the truck behaves when it comes out of their hands. It has no effect on mileage since the engine cpu doesn't know what's in the tank. I experienced the vibration you describe when holding the truck at standstill with 'Drive' engaged and avoid it by leaving it in 'Neutral'. The torque is so high at 900 rpm that the truck really pulls hard on the brakes. Another effect is break pad wear: the disks are 28mm thick when new and mine are still 27.3mm coming to 30,000 miles. I measured the disks during tire rotation and have the impression they will last for a long time. Considering the mass of the truck added to a lot of city driving this is quite impressive.
    During winter I was getting 10 to 15% less mileage with both normal and B5 diesel fuels. This is related to the air mass sensor. Another test I made was using the high efficiency K&N air filter over several tankfulls: it brings more air at low rpm (better acceleration??) and thus induces lowerer mileage by ~5%. Several people here reported the same thing with common rail diesels, and they finally go back to the original filters. I think there is a 'hickup' with the timing of the automatic gearbox where it could lock faster. I'de like to hear from people who have manual transmission. But I'm stubborn and won't give mine away too kickly!
  • pttrilliumpttrillium Member Posts: 62
    Second tank was B2. Biodiesel is easy to find in Southern Minnesota (full listings of retail outlets on www.biodiesel.org) and runs 2.37 a gallon instead of 2.24. You may be right about the cetane levels/smoothness issues, dealer wants me to drive it some more before they look at the smoking issue which I can only see at night in other people's headlights. During the day you don't see it. I have to say is does cure tailgaters of their habit.

    Dropped the thing off at dealer. They were great and promised to fix the noise, didn't hassle me, identified the issue without hesitation or question.

    I wish I'd bought a Jeep years ago.
  • willysjeepwillysjeep Member Posts: 107
    "Second tank was B2. Biodiesel is easy to find in Southern Minnesota (full listings of retail outlets on www.biodiesel.org) and runs 2.37 a gallon instead of 2.24."

    How's that stuff in Winter? I was told it is unstable and really has a tendency to gel up in cold weather. I also was told that the vehicle takes a mileage dip using biodiesel. Are either true?

    What do they make it from there? corn, soybeans?
  • tomasnctomasnc Member Posts: 8
    I have been checking in daily to this board.

    I placed my order on March 07, 2005. The dealer said 8-13 weeks. :cry:

    I am guessing 10 weeks. With some reports that the Liberty is not rolling off the lots like previously predicted I am hoping to get mine sooner.

    What do you folks think?

    Thanks,

    TP
  • pttrilliumpttrillium Member Posts: 62
    Soybeans!

    Below is a thing I found on the national biodiesel board website. Minnesota is going to require biodiesel (in some low percentage like B1 or B2) and will be the first state in the nation to mandate it. Given that, I found the following information which suggests at B2 levels there;s no real differnece:

    Myth: Biodiesel does not perform as well as diesel. Fact: One of the major advantages of biodiesel is the fact that it can be used in existing engines and fuel injection equipment with little impact to operating performance. Biodiesel has a higher cetane number than U.S. diesel fuel. In more than 50 million miles of in-field demonstrations, B20 showed similar fuel consumption, horsepower, torque, and haulage rates as conventional diesel fuel. Biodiesel also has superior lubricity and it has the highest BTU content of any alternative fuel (falling in the range between #1 and #2 diesel fuel).

    Myth: Biodiesel doesn't perform well in cold weather. Fact: Biodiesel will gel in very cold temperatures, just as the common #2 diesel does. Although pure biodiesel has a higher cloud point than #2 diesel fuel, typical blends of 20% biodiesel are managed with the same fuel management techniques as #2 diesel. Blends of 5% biodiesel and less have virtually no impact on cold flow.
  • silverminersilverminer Member Posts: 15
    TP - My Liberty took about 6 weeks from the order date. They told me it would be between 6 and 8 weeks so I was pleased. Regardless, it felt like forever! I think it was worth the wait.
  • ejones4ejones4 Member Posts: 2
    my lib diesel ( 1800mi) has devloped a surging after a hard accel ( like getting on a on ramp of an interstate) and you back off to a steady speed it surges for a few miles then evens out...it will not do this if you are slowing down or speeding up..it only if you try to maintain a set speed after a hard acell...not having much luck with my dealer... any one have any suggestions ?

    Thanks Chad
  • pttrilliumpttrillium Member Posts: 62
    Dealer replaced exhaust pipe and the biggest hugest muffler I've ever seen.

    Two things are different: It doesn't make the funny noise at idle and my mileage has jumped from 21 highway to around 26.5. We took it out on the highway tonight for about an hour of steady driving and even with a few stops it was a big improvement. The diesel sound (marbles in a coffee can) seems more smooth but that might be my imagination.

    My dealer was great about the issue and the new car salesman checked in about it. They seem to care about it and at least for the time being are paying attention.
  • willysjeepwillysjeep Member Posts: 107
    "Dealer replaced exhaust pipe and the biggest hugest muffler I've ever seen."

    Why would a 4 cylinder engine need a humongous muffler?

    I'm also still wondering why the Liberty is so much heavier than similar 4X4s sold by the competition. I guess it's about 1,000 lbs heavier than some others. Is it just that much more rugged that it's structure requires more weight?

    I do like the way it rides.
  • caribou1caribou1 Member Posts: 1,354
    The gas pedal is connected to a cable turns a potentiometer that you can see under the hood. It sits on top of the engine close to the fuel filter. If you have a loose pedal mount (inside), a drag in the cable or a defective return spring this could happen. In this truck the engine cpu sees a closed set of contacts when the pedal is relaxed, a variable resistance (pot) when you accelerate and another closed set of contacts when you floor the pedal. Anything 'in-between' should be mechanically related to the pedal.
  • caribou1caribou1 Member Posts: 1,354
    The big muffler on a 'small' turbo diesel engine is due to lower exhaust gas pressure. To spin the turbo, the gas looses part of it's energy (pressure) and thus requires a larger tube to evacuate a given flow. These mufflers usually last longer than the life of the truck because there is very little abrasion from particles on the inner walls. But they do rust!
    Concerning weight, you could probably compare to Nissan and Toyota. Have a look underneath your truck and you will understand you are not playing in the same yard as a CRV, RAV4, Subaru or Mazda 4WDs. These are very well built, but for other uses.

    ps: I live nearby an important BMW dealership and I can see X3s and X5s coming back on trailers. One of their tecs told me 'Oh, are you really buying one of those?' referring to the Liberty. I drive by, I don't need towing sofar. :blush:
  • jdf2005jdf2005 Member Posts: 6
    I'm on my third tank of diesel and I am avg. 24.3 mpg. I notice that the trip computer says 23.8 mpg. I calculate the mileage manually...seems more accurate.
    The Liberty is over 4200 lbs. and rides very smooth. Its the weight of the diesel and the 5 speed tranny over the 3.7 gasoline unit. Have had no quality issues and have totally enjoyed the vehicle thus far. Most diesels will not see their best fuel economy until 10,000 miles...so I expect the mileage to improve with time. Our dealer here in north Texas sold all 4 CRD's in his inventory on one Saturday afternoon. We took ours home for a two day test drive and bought it...if you drive this vehicle you'll buy it.
  • tomasnctomasnc Member Posts: 8
    i like that concept. i am guessing you have done business with the dealer before?

    my CRD is being built the dealer says and he is saying i'll have it by the end of the month :P

    my dealer's first and only CRD limited has been on the lot for a month...i would have guessed it would have been gobbled up already. fuel prices are my guess.

    in NC diesel has dropped from $2.26/gal to $2.14.
  • caribou1caribou1 Member Posts: 1,354
    I have 28,000 miles on my CRD and I'm also getting 24.3 mpg on country roads (50-60 mph) when the temperature is in the 70's. I haven't noticed any change during breaking in period. Driving alone or with 4 passengers + luggage makes no difference on my mileage. A second hand CRD for sale is a rare object here, people seem to keep them. Now that you can buy them, we have to wait to get one here as well. I was very lucky to get mine off the showroom floor.
  • braelingbraeling Member Posts: 2
    I got my Liberty back a couple weeks ago and it's been running fine. The last tank got 24.5 mpg, the best so far. Maybe there is a light in the tunnel.
  • spetespete Member Posts: 73
    I have 2100 mile on my Liberty CRD and am experiencing the same surging. I am tyhinking it has something to do with the convertor lock-up - I get the surging if I accelerate up to about 50-55 mph and thern take my foot slightly off the gas pedal - the convertor alway locks up at about 53 mph and if I watch the tach the rpms stay steady but -jerk-jerk -jerk - until I either speed up or touch the brake pedal slightly. I am taking mine back to the dealer this afternnon to have it checked out. Nice to know that the problem may be more widespread than just my vehicle - if that's any consolation -
    spete
  • fossilfoolfossilfool Member Posts: 2
    I had my CRD for a month now and am getting to feel a webit dissapointed on the mileage issue. The first tank which was half highway avg 20.6mpg the second which was mixed driving only came to 17.6mpg. Now this is in Fla. with no skid plates or tow pkg. So heat and ex. weight are not an issue. Any suggestions? I traded in my renegade in the hopes of much improved mileage. You guys seem to be getting better what gives? How bad is it going to get when I get the mods for wheelin', real bad. I love the car, i hope its not another love hate relationship like the last one.
    Any ideas would surely be appreciated. Guess I'll complain to the stealership. Did the new muffler actully change your MPG or just your noise.
    Some guy put in a magna flow in his CRD on the kj lost site. no word on mpg improvements yet.
  • willysjeepwillysjeep Member Posts: 107
    I get good mileage but I drive different than other people. I slowly accelerate and try to use my brakes sparingly. I use the cruise whenever I can. I get passed a lot by tailgaters and often come up behind the tailgaters after a few minutes. I hang back and see the tailgaters harrassing the bumper of a car in front of them. They hit the gas and hit the brakes, hit the gas and hit the brakes. I'm sure their mileage is rather on the poor side. Sometimes the other lane will open up and the tailgater will tromp on the gas passing the soul in front and will whiz off to another tailgating adventure wasting more fuel in the process.

    I don't live in a large metropolitan area. When I drive in one I am forced to adopt some of the driving styles of the tailgater described above. If you live in a heavily populated area, your mileage may suffer as a result of the way you are forced to drive.

    Or,.....could it be the type of diesel fuel you are purchasing?
  • ecramanecraman Member Posts: 25
    I have gotten as high as 24.8 in mixed stop and go and highway up to 80 mph and as low as 23 in mixed mostly around town driving. We also have a 2002 and it gets about 13.5 around town and 20-21 on the highway. I am taking the CRD to Maine on vacation this fall and will be interested to see the pure highway number.
  • pttrilliumpttrillium Member Posts: 62
    I think the breakin period for the diesel is longer. Our mileage is slowly improving. We are getting around 20-21 in town mixed driving and around 23-24 on the highway, maaaaybe I could get 25 if I didn't like that throttle so much. This is improved about 1-2 mpg since the first two tanks. We have 1200 miles on it so far since March 30th.

    don't give up on it til you drive it more.
  • spetespete Member Posts: 73
    I have had my CRD since the second week of March - my mileage has been as low as 19 - and as high as 27.5. The higher mileage was on a trip of 750 miles from where I live into Michigan and back. This was almost entriely highway driving. I have 2450 miles on it now and I believe that the milage is improving on the everyday - around town type of driving that I normally do. I don't think these diesels are the best for short trips - start/stop driving - that's when I get the poorest mileage. I am still really happy with the vehicle no matter what mileage I am getting.
  • fossilfoolfossilfool Member Posts: 2
    Thanks for your responses to the mileage question. I don't paln on giving up yet. If push comes to shove I can always make my own biodiesel. That's proably the best option we have with the CRD. I figured if things got bad enough, I could always go down to the grocery store for some wesson, or order a super sized bucket of grease from mickie D's!
    There are a couple of other good boards around for info too...kjjeep, and jeepsunlimited have alot useful info. Anybody aware of the harsher break in stlyes for the CRD. Been reading some on the VW diesels. Lots of reving and changinf of rpm's. Something about the compression and the sealing of the engine. Is this true? Let me know what you think...thanks again
  • caribou1caribou1 Member Posts: 1,354
    I think it will take you a few weeks to get used to the torque of the CRD. It's nice to feel a lot of pull in start/stop driving conditions but you also burn more fuel and rubber. I get good city mileage by never accelerating more than 2200 rpm (~1/4 inch on the pedal) and this helps shifting at 2100 rpm instead of 2500-3000. Under 35 mph I keep the O/D in the OFF state and this usually brings the revs down by ~300 rpm.
  • pttrilliumpttrillium Member Posts: 62
    I was in Spain a few weeks ago and remember seeing a Cherokee with what I thought was a badge on the back that said it had a 2.2 liter diesel and not the 2.8. Is the 2.8 used thoughout Europe starting with the 2005 model year? I noticed also that the one sold in the UK has less horsepower but that might be the difference in brake horsepower and engine horsepower which we have in the US? I figured if anyone would know you would.

    I actually think my CRD with the 2.8L is GROSSLY overpowered and wish they'd gone a little smaller on the output. The torque is insane.

    I am with you on the "take it easy' philosophy with the pedal but still wish I got better MPG. I'm pulling 20 in town and no better than 24 on the highway but our weather has not gone warmer than 50F this week with freezing temps everymorning for 2 weeks at least. I'm looking foward to a nice highway trip in the heat to see what this thing will do.
  • vtdogvtdog Member Posts: 163
    I have a 2005 with about 1,500 mi. Each tank gets me better mileage with the best being 25.5 and the worst (the first) 20.5.
    I am wondering about checking the oil level. If I do it at the fuel station it reads low, but if I do it at home after about a 5 min wait it is ok. What then is the "real" oil level? Since it has the factory Mobil 1 oil I expected that it would be very "slippery" and flow back into the sump faster, but maybe it is more "clingly"

    Any thoughts?

    Thanks
  • faroutfarout Member Posts: 1,609
    I bought a Liberty ltd. with the 3.7 gas in Jan 05 I have 6000 miles on it now. I am getting 18.75 to 20.3 mpg. I was unaware of the 2.8 until Feb 05 when I saw one at a dealer. I have wondered how they do compaired to the 3.7. Today (4/27/05 I asked to take a 2.8 on a test ride. I am so glad I got the gas. I was seriously wondering if I might have made a mistake getting the gas Liberty.

    From my point of view the 2.8 may have lots of foot lbs, but it is much slower in pick up than the gas. There is more noise (clater) from the engine which is normal for this type of engine. It took a lot more fule peddel to get it going. The five speed auto trans is nice, wonder why they don't have it in the 3.7. Overall the 2.8 is a good choice if you are hauling something, but as to paying for the extra cost of the 2.8 engine and the higher cost of fule over gasoline, if one buys the 2.8 just for the better mpg, I am not sure after 100,000 miles there would be much of a cost savings. Anyone else have other thoughts?
  • badnessbadness Member Posts: 242
    for what its worth I seen diesel for $2.21 today,and with Presid. Bush talking it should even come down more,I would say Diesel should come down to at least $2.15 <$2.12
    well will see if it happends.
  • caribou1caribou1 Member Posts: 1,354
    I think the 2.2 liter diesel engine goes with the PT Cruiser. I've not heard many good comments about this engine.
    My 150HP 2.8 CRD was built in 2003 and doesn't have the variable geometry turbo that gives better boost in the low rpm. The difference is really minimal because the tranny's converter compensates in that range. In fact most of my driving is between 1600 and 2100 rpm in the city (~100HP), 2500 rpm on the highway (~120HP) and I never use the full power range.
    The new CRD is given for 163 HP here as well, but you should consider the range you really use and not only the extra 200 rpm at the high end (3600rpm/150hp versus 3800rpm/163hp). If you try your truck offroad you will find it's more pleasant at 2000 rpm than at 3500
  • spetespete Member Posts: 73
    Thanks for the comments on "around town" driving. I will try locking out out the OD when I am doing my short trips. For what it is worth, the Chrysler dealer called me yesterday and informed me that they have received an update for the computer - I was having some problems with the convertor lockup at around 50-53 mph - a jerky situation - and this is supposed to fix this. Anyone else having this problem should call their dealer and look into it. I am going in Monday to have it done and will report back as to whether or not it "fixes" the situation. - spete
  • silverminersilverminer Member Posts: 15
    I agree that diesels aren't for everyone. I let someone here drive my CRD the other day and they descibed it as "farm-like." I personally love it. Off-road the low end torque allows you to crawl up and over most obstacles. You can pretty much idle over everything. (the real limitation is the ground clearance) On the highway, running through the mountain passes here in Colorado, I couldn't ask for a better engine. The tranny locks up right near the max torque and pulls up the passes without downshifting. I'm getting around 28 mpg on the highway (mountains). Around town the diesel is a little harder to live with and the mileage doesn't appear to be that great (20 mpg so far). I also like the longevity of a diesel and changing oil every 12,500 miles kinda turns me on! If you're only looking at mileage, buy a TDI Jetta - I had one and loved it. If most of your driving is around town, you need a great little 4x4 and you don't like the clatter, go with the 3.7 Liberty. If you need the perfect all around 4x4 for Colorado, I don't know how you can beat a CRD.
  • willysjeepwillysjeep Member Posts: 107
    Silverminer:

    Glad to hear someone else is getting the 28 mpg that I've been getting. I was beginning to think I was extremely lucky.

    I'm hoping the "farm-like" engine won't buy the farm until two or three hundred thousand miles.

    There are kits out there to boost the ground clearance and of course bigger tires would help.
  • oz_crdoz_crd Member Posts: 1
    I really love our CRD, we have had it since the first week of March. We are planning to drive it into Colorado on vacation this summer, and also plan on driving some mild backroads around Rocky Mt Nat'l Park. My one concern about this is the relatively low ground clearance, especially the vulnerable-looking placement of the oil filter. Would it make sense to consider installing a remote-mounted oil filter to get it out of harm's way? I might not have worried about this, until we took a detour through a road construction area recently, and the front skid plate hit some dried mud that wouldn't have even come close to hitting the underside of my 2001 Ford Ranger. Wouldn't want to be out in the Rockies and have a rock drain the oil out of my engine.
  • jdf2005jdf2005 Member Posts: 6
    I have 1800 miles on my 05 Liberty CRD and have averaged 26.4 mpg on all highway trip. Calculate your mileage with a calculator not the trip computer...its off by approx. 1/2 mpg. If you use the trip computer clear it every time you get fuel as it becomes unaccurate as the miles pile on. I am extremely pleased with the CRD and fully expect to see 27 mpg at 5000+ miles. As for driving the diesel it takes a adjustment period for acceleration. Its better to keep engine revs b/t 1800 and 3000rpm for best pick up...not full throttle. If in doubt test drive one...my dealer allowed me to take it home and keep it for 2 days before buying it to make sure it was what we wanted. The CRD rocks and I think it will become a best seller for Jeep with fuel prices what they are.
  • rnaborsrnabors Member Posts: 25
    Hello pttrillium,
    What was the problem that lead the dealer to replace your exhaust pipe and muffler?
  • pttrilliumpttrillium Member Posts: 62
    First off, the dealer was really great. Service advisor came over and asked me what the problem was and I demonstrated it to him. He did not hesitate and said they'd fix it. No hemming or hawing whatsoever.

    And when I came to pick it up, it was fixed.

    The vehicle made a louder than normal puttering vibration at idle that came from the back end of the vehicle after it was heated up and was stopped in gear at a stop light or in the driveway. It would be louder with the A/C on. It could not really be detected from outside but only really from the inside and I believe it was some kind of baffle obstruction that caused a vibration in the exhuaust and resonated with the body of the vehicle.

    New muffler. Sound gone. End of problem.

    With 1450 miles we are now getting 26.7 on the highway. Mileage improves as the engine gets more miles.

    Hope this helps. :D
  • willysjeepwillysjeep Member Posts: 107
    I received advertising literature with the diesel Jeep. These show the Jeep cruising through a desert of sagebrush raising a dust cloud behind. The photos have the look that they were taken at dusk giving a reddish glow. You've all probably seen it.

    Anyway, here's the first question:

    The advertising literature shows an RPM vs Torque curve superimposed upon an RPM vs Power curve. Will the Liberty's mileage be maximized at the point when the engine is at the highest point on the Speed Vs Torque curve? This looks to be about 2000 RPM which is around 60 miles per hour (100 km / hr) with the automatic transmission.

    And here's the second:

    Will the engine have greater longevity if it is run at the top of the Speed Vs Torque curve?

    Some of you people seem pretty smart and I am anxious to see what the answer is.
    :confuse:
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