Jeep Liberty Diesel

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Comments

  • moparbadmoparbad Member Posts: 3,870
    Probably because until last year, Power Service didn't contain cetane booster.

    Not true.
    PowerService has increased cetane since at least 2001 in both the white and the silver bottle. Before 2001 I did not use it, so that's as far as I know.
  • semo1semo1 Member Posts: 3
    Has anyone found anywhere else besides the dealers to buy both air and oil filters. I'm up to 25000 miles and due for second air filter just hate to pay up at the dealer, same goes for the oil filter.

    Thanks
  • caribou1caribou1 Member Posts: 1,354
    I bought the replacement filters sold by Mann diesel:
    - MANN W719/14 is the oil filter
    - MANN C2975 is the air filter
    Both are 1/3 of the cost charged by my dealer.
    I will soon receive the 2 microns fuel cartridges made by Parker-Racor. Cost is 1/2 the price!
  • anomiousanomious Member Posts: 170
    Hi! If there is such a thing as a "power programer" (see msg.# 2578) it will enable us to program shift points. If anyone has info on such a devise, please pass it on. Thanks! LK :shades:
  • unclebubbaunclebubba Member Posts: 80
    Just wanted to ask if you are using a low sulfur diesel with a higher cetane? I believed that I was having a fuel delivery problem when I first got my CRD (2005).

    Started using a ceane booster and have nearly eliminated the "jerking" (or "stuttering" as I call it), that I had been experiencing. The US fuels in the southeast run a cetane of roughly 42 or so. The cetane of the European diesel is 51 and is a ULSD.
    I have a hypothesis that these lovely littel diesel engines are designed/tuned for that ULSD with the higer cetane number. Just a thought. I just have trouble for some reason with the idea that it is strictly a transmission issue. That's not to say it could not be!
  • unclebubbaunclebubba Member Posts: 80
    Anyone found a site that can direct a person to retail dealers of bio-diesel? I sure would like to see more of the bio fuels available for both gas and diesel.
  • unclebubbaunclebubba Member Posts: 80
    Anyone who is interested in K&N air filters. They do have an application available to replace oem filter when it's time to change. The stock number is : 33-2233

    You can get it ordered using this stock number at about any major parts store who handles K&N. Good filters! :D
  • winter2winter2 Member Posts: 1,801
    I would not do it. There have been several posts where people used the K&N on their CRD. Fuel economy actually went down by several miles per gallon. Acceleration performance did not change.
  • moparbadmoparbad Member Posts: 3,870
    K&N on CRD will not increase performance, will not increase mpg. Why use it?

    Aftermarket oiled filters are suspected of casuing MAF contamination and failure. It is enough of a problem that K&N has a MAF statement. MAF

    I'm personally aware of increased frequency of MAF failures using oiled filters on a different make of diesel engines. Of course, the MAF's are a problem even when oiled filters are not used.

    If there was a benefit in performance or mpg to using the aftermarket oiled filter I would weigh this against the very small risk of contamination due to oil, without any performance benefit there is only the risk.
  • unclebubbaunclebubba Member Posts: 80
    WOW!! That's a weird one!! Especially the benefits that are provided by using a K&N filter in gas powered cars/trucks.
    My wifes 02 Liberty V-6 has a FIPK on it and it got a lot peppier and the fuel economy improved by over 0.4mpg.
    I will probably try using the K&N filter in the CRD, based on my past years experience with them and their longevity. As well as their increase of flow, allowing the engine to inhale more freely. :)
  • unclebubbaunclebubba Member Posts: 80
    It's true that there are no "stats" to quantify any performance parameters. Based on life experience, if you can make an engine inhale more air, combustion should be enhanced. By that same token, however, it should be able to exhale as well as it can inhale. I know, that's oversimplification.

    Reading K&N's MAF statement just made the point that their is no real evidence one way or the other, of their filters being a cause of the failures. Who knows?? I will be the guinea pig and try it.
    If I observe a noticeable increase in mpg, I will let you know. I doubt that I can reasonably quantify any performance enhancement. Most of that would be too subjective, without pre and post dyno testing. Thanks for your input. I appreciate everyones expression of experience and opinion. :)
  • sailman397sailman397 Member Posts: 15
    Try www.biodiesel.org
  • mel22mel22 Member Posts: 3
    I am looking into the 2006. I am interested in hearing if there have been any problems with the electrical system. I have been driving a diesel for years. The problem that I have with the one that I have now is a chronic problem with the idiot lights that can only be fixed by going back to the dealer with a high tab. Is this just a dealer thing to get you back for expensive service?

    Also my diesel from time to time has a hard start, sometimes when it is cold and other times when it has been running.
  • mdamickmdamick Member Posts: 277
    DC was too cheap to put in a plug. You need to remove the kick panel on the drivers side. There is a white plastic cover over the wiring that snaps open and the blue wire will be there to feed the brakes. I got controller power from a point where a relay should be above the fuses on the drivers side panel. There are 2 points that show 12V but one of them does not supply enough current. Also, the panel below the steering wheel pivots down for access to the brake switch. The brake switch can be turned counter clockwise 45 degrees to come out and make it much easier to work on.
    Went to all that work & have not had the time to tow my trailer with it.
  • lomielomie Member Posts: 1
    Been using B20, for 2 tanks, works great.
    Put B100 in today, so far so good, smells good, seems like just a bit less power, but thats a small sacrafice for using a fuel made by american farmers.
  • faroutfarout Member Posts: 1,609
    The Power Service diesel fuel supplement can be found in the automotive section at WALMART, $5.36 32 oz treats 100 gals. I put it in for the first time today, at 3,800 miles and it has used 1 qt of oil for the first time. I think that is pretty good. I hope the PS is worth the $ and really helps boost mpg as I get typically 21 to 22.5 mpg. Good Luck!

    Farout
  • faroutfarout Member Posts: 1,609
    I do not recall saying 6,000 miles. However I did call my local tire independant dealer that sells Goodyear tires and other brands as well, and he ajusted the price of the New Goodyear Fortera tires to $330. with the ST tires that came on the CRD. After taking off one of the ST tires he asked me to press down on the ST tire it had no support at all, just could have pushed it down as far as I wanted. The Fortera tire I could sit on and it still supported me. The Fortera are 8 ply and ride just as smooth as the ST's. Hope this helps.

    Farout
  • faroutfarout Member Posts: 1,609
    Hope you enjoy the CRD. Having liv3ed in Phonix for almost a decade until 1994, I am fimular with the I-10 you speak of. Now I live in a real green place with 4 seasons in stead of nice and hot as heck wher you are. Missouri is wonderful!

    However you are going to hate the ST tires as they will ware out in less than 15,000 miles. They are cheap OE tires, and heat eats them up real quick. Hope you have many miles ahead in your CRD.

    Farout
  • faroutfarout Member Posts: 1,609
    The 6000 miles I refered to is on the Fortera tires, I reread my reply and thought I would clarify what I ment.

    Farout
  • faroutfarout Member Posts: 1,609
    tidester: Thanks, I appreciate your help.

    Farout
  • faroutfarout Member Posts: 1,609
    Winter2: Would you be willing to give us the address you used to contact VM Motori? Thanks.

    Farout
  • boilermaker2boilermaker2 Member Posts: 131
    This question has been asked before, I clipped it out and put it in my owners manual.

    See post 2195 on this forum ;)
  • ttandjjttandjj Member Posts: 21
    Ok so we have the 2005 diesel liberty and this evening my husband cranked it up & put it in reverse, backed out of the garage, put it in drive and it "putted" or "stuttered", very weird! He accelerated and the engine sounded really funny, like something was loose or something. I told him to press the pedal a little more to zoom it a bit and like, uhhh it didn't accelerate any faster? It's like something is hung up or stuck or something. Anyone have any idea what is going on?
  • boilermaker2boilermaker2 Member Posts: 131
    Moparbad, where do you find the Hastings brand?
  • unclebubbaunclebubba Member Posts: 80
    Had this happen to mine with less than 200 miles on it.
    I believe, now, that air was in the system from the fuel filter. What I finally did, was to locate the the filter on the fire wall on drivers side and pumped the primer button on top until it firmed up. End of problem. Hopefully this will resolve your problem. :)
  • moppermopper Member Posts: 4
    EGR!
  • jimhemijimhemi Member Posts: 223
    BullyDog performance diesels are looking for owners of Libertys that would like to test some beta versions of their software.
    http://www.bullydog.com/Home.php
    Scroll to the bottom of the page to sign up. I want a Liberty with 600lb ft of torque. Hope that Bully Dog or Banks makes this possible.
  • alljeepalljeep Member Posts: 35
    I think the majority of us would rather have our CRD's last 500,000 miles rather then less than a tenth of such.
  • vtdogvtdog Member Posts: 163
    I am finally changing out the pos goodyears, but am putting on the optional size of 235/70/16 rather than the original 225/75/16. Is it possible to change the crd computer to compensate for the tire size difference so that the mpg and mph will be adjusted correctly? If so, can my local jeep dealer do it, or is it something special?
    thanks
  • jimhemijimhemi Member Posts: 223
    Look at the trend in diesel performance and you'd be surprised. Many would love the extra "kick" that would be provided. For the dorky, cruise control on at 51 in a 65 crowd, please make sure you stay in the right lane.
  • boilermaker2boilermaker2 Member Posts: 131
    The size difference is only 1.1 percent:
    tire size calculator

    Even at 80 mph, you're off<1 mph.

    My question to you is: where did you find this alternate size? I read posts where people have talked about other sizes but I have not seen a DCX-approved alternate size anywhere in my literature.

    Hope this helps. Am curious where you found this alternate size.">link title
  • jimhemijimhemi Member Posts: 223
    YAWN
  • anomiousanomious Member Posts: 170
    Hi! The 245-70-16's are only 0.7% off! I installed this size in the Bridgestone REVO, this is the top rated AT tire. The Bridgestone Alanza is a super road tire. Check their ratings on tire Rack's charts. Good luck LK
  • vtdogvtdog Member Posts: 163
    Alternate size was listed on tirerack.com In addition, all the dealers I went to suggested the 235 size for a "squarer" tire to put more tread on the road. I am going to buy Michelin Cross Terrain at Sams Club
  • anomiousanomious Member Posts: 170
    Hi! I have Michelin Cross Terrain's on my 96 Cherokee...They slide in the rain. LK
  • moparbadmoparbad Member Posts: 3,870
    October 15, 2006 ULSD in Diesels in the News
  • ttandjjttandjj Member Posts: 21
    Two days ago while driving about 20 mph heard loud deep boom and lost engine power. Thought turbo had gave in. Only 5000 miles on the Jeep. Had to tow to dealer. Technician found that the inlet hose to turbo actually popped off. He cleaned and reinstalled hose. Checked computer for codes (none) and topped off oil. Told me that he had some CRD's come in for similar problems. Many of them with loose hoses and connections. Also, found power steering hoses loose. Checked all connections and hoses and tightened them. Now the Jeep runs better than ever. Before would have periods of stutter and poor performance. Remember reading an earlier post about checking connections/hoses. This may be all that is needed. Just a possible resolution for those having similar problems.
  • trumpet_washertrumpet_washer Member Posts: 48
    Those 235's are a full inch smaller than the stock tires! I went with the 245/70-16's. MUCH better ride, and the speedo difference is neglible. Also bought tires with a "square" shoulder. Flatter footprint. But, back to the original question, can the tire size be changed in the computer? Nobody has answered that.
  • winter2winter2 Member Posts: 1,801
    Nice pickup.

    I will be spending some time this weekend doing my monthly check of all the connections/hoses to make sure they are tight. I have eliminated most, if not all of the stuttering I had especially when cold. I found that adding cetane improver did help the most.
  • winter2winter2 Member Posts: 1,801
    I do not think that you can change that in the computer. I think that there is still a gear set in the trans that would have to be changed. To get a more accurate reading on the computer would require some re-programming of the software. I really do not think you want to go there.

    As to going to a wider, lower profile, good idea for dry pavement, but not so good for wet or snow. In the latter conditions that larger tire patch can work against you. I would also think that a larger tire patch might be a negative influence on fuel economy (greater friction).
  • trumpet_washertrumpet_washer Member Posts: 48
    I used it, too, and there wasn't anything on the bottle about improving cetane (at least on the ones sold around here) until last year, maybe 2003. That's why I began using Stanadyne. Well, that and because the place where I buy the Stanadyne was able to clean out my gunky VW :) EGR intake.
  • bullheadbullhead Member Posts: 125
    WIDE TIRES:

    Okay, there are not all upsides to wider tires. Narrower tires provide better traction in most situations. Chances are good a tire dealer merely doesn't have the 225's. Get narrower "LT" tires. They won't flex as much versus "P" tires.

    PERFORMANCE UPGRADES:

    I'd be inclined to reply, "Get a life", but obviously someone's much too busy buying, modifying, and repairing stuff to do that. Get a semi-tractor, then you'll have a different life, at least.

    Owyhee!
  • showdogs1showdogs1 Member Posts: 4
    I've had my Liberty since July 2005 and have been following this post ever since. It currently has 8700 miles. Daily commute is 25 miles one way with ave. of 23.3 mpg. Low was 21.6 mpg with more city driving + short trips on that tank of fuel.

    I have taken 3 long trips (since the 5000 mile mark on the truck)and have calculated mileage. Trips were on 4 lane highways with cruise set at 62, 68, and 74mph. The results...? 62 and 68 mph = 25 mpg... @ 74 mph = 27.5 mpg (with 300 lbs more weight in truck but no AC on this trip!).

    Is the increased in mpg due to no AC or better engine efficiency at higher speeds (rpm)?

    Previous posts have said that AC does not have a big effect on mpg, especially when compared to the increase drag of having windows opened.

    My only guess is that at higher speeds (engine rpm) the turbo kicks in and increases the efficiency of combustion by pushing in more air. Does this make sense?
  • caribou1caribou1 Member Posts: 1,354
    There is an international desert race going on every year:
    http://www.dakar.com/indexus.html
    The vehicles that drive through sand + mud + rocks + the most miserable pavements one could imagine all use narrow tires. When I bought my 225 BFGs T/A instead of the standard 235s I didn't know if the choice was right or wrong but now after 15,000 miles I can recommend this tire for the Liberty as long as you don't drive above 80 MPH. They are a bit noisy on wet roads between 25-40 MPH, but this is usually just before accidents happen. It took me a week to get used to their lateral behaviour but they are constant whatever weather condition I'm in. I just find them "superb" on this truck.
    The stock tires I got were the Wrangler S4, but apparently you are getting the ST which is not as good as it should be. I guess this is called marketing :(
  • caribou1caribou1 Member Posts: 1,354
    I agree with you about the mileage. I noticed that when I take into account the waiting time (when not rolling on the road), the mileage comes back to normal. I count for 3 quarts of diesel fuel per hour of queuing. I'd like to get someone else's input on this way of figuring out the effective performance of this truck. I also quoted 6 quarts of fuel per hour in off-road use, and this makes sense compared to what a 150 HP diesel forklift or crane uses.
  • lightnin3lightnin3 Member Posts: 153
    We all love the torque the CRD provides,especially for towing a small utility trailer,and passing power.
    I think the libby performs great for practical purposes.

    In Windsor Canada Diesel is still at $4 /gallon.
    This motivates me to say some of us do want to conserve,
    and use the diesel to it's fullest econmical extent if we can.
    Using the 5 th gear,dropping Rpms and speed while still having the abilty of 4X4 and also maximize fuel mileage is the reason why I gor her.
    I leave 10 minutes earlier for work,and take my time and this premise as I figure will save me a load of money.
    I have no problems on midnight shift ,there are hardly anybody on the road ,and I follow the truckers,and let the speeders pass by,while I save 20% fuel economy,listening to music ,and sipping my coffee.
    I even advertise my mileage on the back of the spare tire wheel cover.
    Most people don't know what a CRD is ,
    I've had 12 Canadians pull me over in shock ,that there is a liberty Diesel,and the fact that I have been averaging 31 mpg.
    Some were beligerant toyota drivers who didn't believe the stats I was advertising.
    I said Ya ! and she can tow and go through bad weather too!.I say why not pay a visit to the local dealership.

    Thats 12 more people in the dealership buying cars.in my books,thats another knotch for building brand loyalty.

    Peace..
    Lightnin3
  • lightnin3lightnin3 Member Posts: 153
    My suggestion is if you go with a Michelin,try the LTX M/S,<$100/tire>I had great results from these puppies.
    But if your just looking for a great riding Allterrain sticky tire ,thats cheap go with the Sport King Alllterrain t/A.<$80/tire>
    They have aggressive tread pattern for winter use and low noise factor.
    If you want quality .These are the best all weather tires and will last.
    $175 /tire
    Bridgestone Dueller Revo are popular,
    B.F. Goodrich All Terrain T/A KO Silent Armor series...

    Speak Soon ...
    Lightnin3
  • showdogs1showdogs1 Member Posts: 4
    Is that 31 miles per Canadian or American gallon? There is a big difference between the two.

    If it is 31 miles per Amercian gallon => congrats

    If it is 31 mpg Cdn gallon (4.54 ltr/gallon) then that equals 25.8 mpg per American gallon (3.79 ltr/ gallon).

    I think that we Cdn's should convert all of their stats to American units to avoid confusion for other post members.

    I used www.onlineconversion.com for easy conversions.
  • boilermaker2boilermaker2 Member Posts: 131
    OK, I will accept the premise that 235/70R16's can be used.

    If this is the case, are the new Goodyear triple treads a viable option. link Info from tirerack.com

    I do like the tread design of the Revo's but I really like the triple-treads that I put on my wife's minivan this spring. Haven't had them in the snow (and we don't take the van muddin') but they are very good on dry and wonderful on wet pavement.

    I will not be taking on the rubicon but my CRD does see a field or two due to my line of work. It will see lots of road miles.

    It seems that many love the Forteras and Revos for many valid reasons. I don't want to get into a Ford/Chevy/Dodge (which pickup is better) discussion but I am interested in what others think. If you've switched to the tripletread on your CRD, I'm all ears. If you thought about it and didn't, why not?

    Thanks">link title
  • faroutfarout Member Posts: 1,609
    I made several calls and found out 8,333 CRD Liberty's were made in 2005. I hope this is an indication that perhaps the number might be double this 2006 year. Has anyone heard what Jeep has in mind for 2006?

    Farout
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