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SUVs Jeep Liberty and Jeep Liberty Diesel Jeep Liberty Diesel
10698 messages, Last post on Nov 30, 2009 at 5:16 PM
You are in the Jeep Liberty and Jeep Liberty Diesel Forum. Your Hosts are steve_ & tidester
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Replying to: wvav8tor (Oct 05, 2009 1:44 pm)
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Replying to: winter2 (Oct 05, 2009 3:10 pm) thanks dusty
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Replying to: wvav8tor (Oct 06, 2009 12:35 pm) http://www.meyerproducts.com/ezmatch.aspx?em=8 |
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While driving home today, the engine light came on. No drivability issue noted. Once I got home, I did the ignition key trick and the code "U 0164" appeared in the odometer space and the the word "done" came up. I have been looking online and it appears to be a generic code everyone uses that indicates that there has been a loss of communication with the HVAC module. Any input appreciated.
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| I have a 2006 Jeep Liberty Diesel. Love the car if I could get the EGR issues resolved. I am getting a constant P0401 Code. I have changed the MAF Sensor and Cleaned the Boost Pressure Sensor. I am still getting intermittant P0101 and P0299 Codes. Hell I purchased a code checker just to turn the damn chk eng lite off. I changed the EGR about 7000 miles back. I read the blog and I have snorted the engine. Got some black smoke out but not that much. To keep the RPM up and blowing I have been driving the car in OD in town. When I cleaned the Boost pressor Sensor it was really dirty. Thought maybe that was it but got an Overboost (0299) code just after I cleaned it. Still the light comes on. I was told by the Jeep dealer that the engine was coked (plugged up) but I really find that hard to believe. Diesels run dirty but it takes a lotta miles and lots of idling to coke one up. The dealer is not up to snuff on Diesels and I think he is blowing smoke. Wants to charge me $600 bucks to clean up the engine because my extend warranty does not cover cleaning. Is there any type of cleaner I can run through the engine to clean up, something that removes carbon etc. Oh also changed the Air Filter to a K&N and thats when I got the over boost. Changed back but am still getting the code. I am at wits end with this thing. FYI all I am getting over 30+ miles per gallon--close to 35 on the road so I think I got a good one if I could just fix the EGR problem. Any thoughts, suggestions would help. Caribou1 it sounds like you are well versed. Can you help. Just FYI I am mechanically inclined, understand somewhat diesels and was an aircraft mechanic in my military days so you can get technical. Thanks man. | |
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Replying to: winter2 (Oct 08, 2009 3:07 pm) |
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Replying to: axelf66 (Oct 09, 2009 1:54 pm) Is the passage from the engine to the EGR clogged? What about the little filter that is on the passenger side of the engine that helps with or has something to do with the VGT control? Have you ever replaced that? Could the CAC be full of trash? Have you checked the boost sensor in spite of cleaning it to make sure it is sending back the correct information? The CCV device, is it clogged or not working? Is the engine controller software up to date? As to additives, I like the stuff from RedLine and also from LiquiMoly. LiquiMoly has an item called Diesel Purge (Diesel-Spülung) which is suppose to clean out the combustion chamber and other items.
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Replying to: winter2 (Oct 09, 2009 5:27 pm) I would expect when the dealer checked the system they updated the codes but I will check it. I will have to ask however I take my Liberty to a dealer who is no longer affliated with Chrysler. Be that as it may when this problem kept recurring my dealer took it to a local Jeep dealer because we thought we had a bad EGR which should have not failed. Although I don't know what they did they did not replace the EGR but said it was coked up. Where do I get the Diesel Purge. I think I can get Red Line from the truck stop.
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Replying to: axelf66 (Oct 10, 2009 4:12 am) CAC: another name for the intercooler CCV: if you remove the shroud from the engine, you will find a round black plastic device sitting in the valve cover with a a hose attached to it. As I understand it, this device has something to do with removing blowby gases from the crankcase. To obtain Redline additives, go to their website and look up the nearest reseller by zip code. For the Diesel Purge, go to the LuqiMolly website and contact the North American representative. I was fortunate to find their products at a local NAPA store. As to being "coked" up or "carboned" up, the tech at my dealer has told me what to do the keep the carbon levels down in the engine and that includes regular "nose blowing". Unfortunately, domestic diesel fuel sucks and is of very poor quality except for the stuff you find in California. The addition of cetane improvers is helpful in reducing smoke/carbon formation.
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