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SUVs Jeep Liberty and Jeep Liberty Diesel Jeep Liberty Diesel
10711 messages, Last post on Dec 08, 2009 at 11:52 PM
You are in the Jeep Liberty and Jeep Liberty Diesel Forum. Your Hosts are steve_ & tidester
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Replying to: tired_old_dave (Jul 24, 2009 5:46 pm) 
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Replying to: nescosmo (Jul 28, 2009 8:47 pm) |
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Replying to: thstranger (Jul 07, 2009 7:39 pm) 
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Replying to: desmo750ss (May 20, 2009 11:07 am) Frank
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Replying to: fbedra (Aug 06, 2009 5:23 pm)
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Replying to: nicku812 (Aug 07, 2009 7:40 am) Try it you will like them, they also have a parts advisor you can call toll free for breakdown information. Parts are checked by your VIN number to assure they fit. |
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Today I performed some maintenance on my CRD and made some interesting discoveries 1. Since I have started using Lubro Moly Super Diesel Additiv, my CRD has been running significantly better, with less noise, no smoke (much less) and increased FE (about 1 to 1.5 mpg). 2. I cleaned the boost pressure sensor, which I do every 5000 miles and there was significantly less soot on it than before starting the aforementioned additive. 3. The fuel filter, which has been in place since May 2008 was not particularly dirty. Instead of the filter element being black or dark brown, it was light gray in color. |
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| Well, the 05 has been running great but, I'm on my 4th EGR valve. I also had the throttle body valve replaced( or whatever the proper term is ). I'm at 55K and the warranty runs out at 70K. I have stayed away from fuel additives that may void the warranty. What seemes to work the best?? | |
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Replying to: firemedic44 (Aug 21, 2009 2:16 pm) Have you been "blowing the nose" of the EGR valve at least weekly to get rid of the carbon build up? Does your CRD see any highway driving? Does the tech who services your CRD clean out all of the passages to and from the EGR valve? Have you been cleaning the boost sensor in the intake manifold at least every 5000 miles? Additives are not the issue here. It is driving style and maintenance. I use A LiquiMoly fuel additive as well as an additive from RedLine to keep everything running up to snuff. Every so often, you need to flog this diesel to get rid of the carbon build up, otherwise you will be looking for problems. Several other owners of this vehicle do the same and the tech at the dealer I use says it is helpful. Domestic diesel fuel basically sucks and borders on being swill.
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Replying to: winter2 (Aug 21, 2009 4:58 pm) My daughter takes it to collage about a 3-4 hour ride. I will have her clean it out on the highway. I'm not sure about the Tech cleaning the passages. If Jeep has it in the directions for replacing the EGR valve then he does, if not, then I don't know. The boost sensor have never been cleaned. Maybe the Tech has. He has mentioned that the pencil valves has a plastic coating that most spray cleaners will damage. You mention driving habits. We have babied the CRD since most post here say if you keep the speed around 57-60 you should get the best mileage and the RPM's should not exceed 2500. Did you find a manual that has these maintenance procedures? The cleaning of the boost sensor sounds easy but I'm not sure where to start, The additives you mentioned. You are using 2. What do they do. I'm in the Chicago area and in the winter when we have days -0 it has been a problem running. I use BP and thats the best I can do here. Would one of these help with that issue? Sorry for the long response.
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