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Jeep Liberty Diesel EGR Problems

108 messages,  Last post on Mar 28, 2009 at 5:29 PM

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What is this discussion about? Jeep Liberty, Diesel, SUV

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#107 of 108 Summary of EGR data: by willysjeep Dec 19, 2008 (4:03 pm)
At 43,000 miles my EGR valve is going to be replaced. I had some work done at the dealer and after the work heard an intermittent buzzing noise. It sounded like a giant pager. I brought the vehicle back to the dealer and received the bad news. The dealer told me that the valve will be covered by my extended warranty and that I may continue to drive it. Chrysler Corp has known of this problem for some time. This forum goes back to 2006. I looked back over the previous posts for items to assure that I won't have to replace the EGR valve again in the near future. Here's what I've noted. It would be appreciated if other items were added to this list.   1) Don't use gooky oil. Seems like the Mobil 1 0-W-40 helps prevent EGR problems.   2) Buy Ultra Low Sulfer fuel. You have to look on the pump to assure that you are getting the ultra low sulfer fuel.   3) Replace the PCM at the same time as the EGR valve. My problem is that I don't know what the PCM is.   4) Replace the fuel filter at the same time as the EGR valve.   5) After the warranty period is up, make a bypass plate for the EGR valve and figure out how to keep the Engine trouble light from being continuously lit by this problem. A software change may be in order and another chip may need to be burned.   6) Sell the Liberty diesel and go back to a gas engine. (I had a Dodge Dakota for 12 years with very few problems.)   What important advice did I miss?   What actually fails on these EGR valves? Can they be cleaned and rebuilt?   This is a good forum that can provide a lot of useful information.
#108 of 108 Re: Jeep Liberty Diesel EGR issues [nescosmo] by spete Mar 28, 2009 (5:29 pm)
Replying to: nescosmo (May 08, 2007 10:44 am) I changed my fuel filter last fall - in fact I am on my 3rd filter. I figure that this is a very inexpensive way to prevent a lot of problems. I have traveled a lot of long trips and I get leery with a lot of the places that you end up buying fuel. If I could always refuel locally I wouldn't worry so much about the filter - but when you travel you never know how "clean" the fuel is that you are getting. Another question...do your rear brakes make a "funny noise" in certain weather conditions when you are backing up? This noise is a "cross between and squeak and a growl" and I only here it in damp, cool weather conditions. It always goes away so I do not worry about it. I put new brake pads all around last fall too - but the noise still comes and goes.

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