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SUVs Jeep Liberty and Jeep Liberty Diesel Jeep Liberty Diesel EGR Problems
108 messages, Last post on Mar 28, 2009 at 5:29 PM
You are in the Jeep Liberty and Jeep Liberty Diesel Forum. Your Hosts are steve_ & tidester
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Replying to: ncmountains1 (Oct 31, 2006 4:24 am) |
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Newbie here. I am considering purchasing a Liberty CRD but have some concerns regarding various recurring issues such as EGR valve replacements. I currently drive a 2002 VW Jetta TDI that I have made some standard modifications that other TDI owners regularly make. One of these modifications is removal of the EGR valve, EGR cooler and replacing the EGR valve with a straight through race pipe. This solves several problems including clogged EGR valves and intake manifolds. You wouldn't believe how much gunk was built up inside the EGR valve and intake manifold after 60,000 miles. A subsequent ECU tuning to increase boost pressures, fueling, rev limiter, speed limiter and EGR delete to remove a related CEL worked wonders on the performance. FYI, TDI's in the German market don't have the EGR system and they have far less problems. I live in Wisconsin which does not require diesels to go through emissions inspection/testing. Even if it did, it would still pass and most inspectors aren't intelligent enough to notice the difference. I wouldn't consider this modification while the vehicle was under warranty, but after the warranty was up I sure wouldn't be taking it back to the stealership to continually purchase/replace an EGR valve. I also see that InMotion Tuning offers a performance ECU tuning that among other things, turns down the EGR setting. Have any of you modified, bypassed or deleted the EGR valve or perhaps had a performance tune that took the EGR valve out of the picture? If so, what has your experience been since the modification? How difficult is it to remove/bypass the EGR valve on a Liberty CRD? Thanks - Mark |
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Replying to: nescosmo (May 06, 2007 7:03 am)
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Replying to: flyingpole (Nov 16, 2007 12:11 pm) EGR issues have been identified a long time ago and pushing the engine to it's limit for a very short period of time is a known remedy when you produce black smoke. When the turbo gets into action under full load at low engine speed it produces a blasting sound similar to a person blowing it's nose. This is where the 'nose' came from and the remedy is explained by Renault and local 'road angels'. What it does is simply build up more pressure in both intake and exhaust manifolds. This helps closing the valve when it's hesitating, but cannot help much more. By doing it once a week you expect to stay away from trouble. |
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Replying to: nescosmo (May 08, 2007 10:44 am)
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Replying to: crdjon (Apr 17, 2008 9:01 pm)
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Replying to: gti338 (Aug 11, 2008 5:41 pm) It's not Daimler that's ridiculous, it's simply to choose diesel fuel nowadays 
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help! when I turn my wheels hard to the left or right, I get an extremely loud squeel. any advice would be greatly appreciated. |
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Replying to: gti338 (Aug 11, 2008 5:41 pm)
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Replying to: siberia (Sep 06, 2008 6:37 am)  Mine still works fine without the EGR valve. 
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