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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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#100 of 108 Re: Liberty CRD EGR valve bypass or delete? [mwweim] by mtb_tdi Oct 28, 2008 (8:44 am)
Replying to: mwweim (Jul 07, 2007 9:03 pm) I have an 06 CRD with the EGR blocked off and no CEL. I had Charlie at KermaTDI.com flash my ECU with a tune that he developed at my request. I requested that he disable the egr.   I made a simple block of plate and inserted it between the EGR valve and the pipe that comes from the exhaust. I can very simply undo this and take it back to the dealer by flashing my ECU back to stock and removing my block off plate, 15 minutes tops!! The EGR is confirmed non functioning via the block off plate and no CEL.   I have confirmed that the tune eliminates the CEL by flashing my ECU back to stock and leaving the block off plate in place. Every time that I have done that, I got a CEL! I just wanted to offer a simple solution to the EGR. I know that there is the SEGR kit, but that requires splicing the wiring harness, which I didn't want to do.   This solution may allow those that have a dead egr to not spend $700 to fix it. They can call Charlie at KermaTDI.com and have him flash the ECU and block the thing off!!!. Replies to this message: mtb_tdi (Nov 24, 2008 7:20 am) mrb91 (Dec 18, 2008 11:12 am) mtb_tdi (Dec 18, 2008 5:01 pm) caribou1 (Dec 19, 2008 12:33 am)
#101 of 108 Re: Jeep Liberty Diesel EGR issues [caribou1] by siberia Nov 02, 2008 (7:08 pm)
Replying to: caribou1 (Sep 08, 2008 11:28 am) Caribou1, my dificulty is not with the process itself but with "nose blowing" as a metaphor. Whether it is a Liberty CRD, a Renault diesel or a VW TDI flooring the throttle closes the EGR valve and that seems to me to be the opposite of "nose blowing". Replies to this message: caribou1 (Nov 03, 2008 5:05 am)
#102 of 108 Re: Jeep Liberty Diesel EGR issues [siberia] by caribou1 Nov 03, 2008 (5:05 am)
Replying to: siberia (Nov 02, 2008 7:08 pm) Siberia, by pushing the engine a little bit you actually blow hot exhaust gas, this expands the EGR assembly if it wasn't fully closed, vibrations can help to release the valve and finally the catalyzer sees a larger flow of gas that removes its left overs. There is nothing else involved, just like cracking your fingers
#103 of 108 Re: Liberty CRD EGR valve bypass or delete? [mtb_tdi] by mtb_tdi Nov 24, 2008 (7:20 am)
Replying to: mtb_tdi (Oct 28, 2008 8:44 am) FYI, the egr delete is an off-road only tune by kerma.
#104 of 108 Re: Liberty CRD EGR valve bypass or delete? [mtb_tdi] by mrb91 Dec 18, 2008 (11:12 am)
Replying to: mtb_tdi (Oct 28, 2008 8:44 am) Regarding the KermaTDi flash. Are you still able to pass smog check and are there any check engine codes when other OBD2 readers are put on your vehicle? Replies to this message: mtb_tdi (Dec 18, 2008 5:01 pm) caribou1 (Dec 19, 2008 12:33 am)
#105 of 108 Re: Liberty CRD EGR valve bypass or delete? [mrb91] by mtb_tdi Dec 18, 2008 (5:01 pm)
Replying to: mrb91 (Dec 18, 2008 11:12 am) Don't know about the smog check. They don't test where I live and it is for off road use, so you wouldn't be getting it tested anyway, right? No Check engine codes show up.
#106 of 108 Re: Liberty CRD EGR valve bypass or delete? [mrb91] by caribou1 Dec 19, 2008 (12:33 am)
Replying to: mrb91 (Dec 18, 2008 11:12 am) Regarding the smog test, all you need to do is drive about 50 miles at sustained speed before doing the test. Bring the truck while it's still making the typical 'clicking' sounds. Mine remains in the lower third of the opacity scale given for it's category, and I forgot about my EGR 4 years ago
#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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