New to Lost JK's, however Long time Diesel man! I use to be the VP of SETDR until resently disbanned due to lack of interest. I have a 01 Dodge Ram 2500 CTD last dyno'ed at 473hp/996tq as of Feb 06. So Diesel performance is not new to me!!!

Situation: I bought the wife a Liberty CRD in Nov 05, last week I had the dreaded EGR failure!!! Suck to be us!!

Question? Has anybody tried blocking off the tube that goes from the Exhaust side to the EGR valve to eliminate the the soot return to the Intake side? This seems to be the obvious solusion to the EGR and Intake carbon/soot build up. I know, I know, that voids the Emmissions! But from my standpoint, putting an EGR Valve on a Diesel is just asking for trouble!!!

Will this solusion work and will it through any codes?

Also I plan on making a set of hard Boost tubes from the Air box -> the Turbo -> the intercooler -> to the Intake side. the Tec that repaired the EGR said that the filter was stopped up causing the the hoses to collapse. He also said this caused an excess draw on the EGR side. I don't buy that for a minute!!! I'm looking for a aftermarket Air filter system that I can retrofit to the liberty to add to the hard pipes I plan to install.

Any links that may be out there on Mods for the liberty would be great.

Joe G.

A long time ago someone posted that blocking the EGR caused some type of flow error code. I also seem to remember someone blocking it and driving it despite the code. There's not been much discussion on it for awhile.

I'd like to be able to disconnect the EGR from the exhaust manifold. The resulting hole/fitting might be a good place for a pyro probe.

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My Jeep Liberty page

ORM, air filter mod, and less restrictive exhaust has increased my 'everyday' driving 3 mpg.

Yes it is an old problem with VW and the MB diesel crowd. With some models of MB it will even put them into limp mode when total bypass was done, I would almost suspect same to happen here due to D/C involvement. VW up through '02 model would just log a code is all and have annoying light on dash. The problem with VW was the Fllow Control Valve (anti run on valve) was physical part of EGR so that if you removed EGR you had hard stop problems along with a chance of runaway engine.

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91 MB 300D 2.5L Turbo. Her's

05 MB E320 CDI. Mine

How many miles were on your filter? What hose did you collapse? Think this tech has his physics backwards. Can't seen the engine sucking harder than boost of the turbo provides on the CAC. One would think the computer would become very unhappy long before you collapsed a CAC hose. I can see a plugged air filter causing other issues like sucking oil out of your turbo seals or CCV line.

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2005 Liberty Sport CRD, Lt Khaki, sunroof

Thankful to now be an EX-CRD owner.

That would be me.
Block the crossover pipe from turbo to EGR and it will throw code P0401 as soon as you start the engine. But will make it driveable.
Did it for about a week

For the record, I will be joining the second EGR valve club as of today. It has throwen code P0401 for the last two days. Time to fine that piece of stainless steel again.

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[iurl]http://home.comcast.net/~n3qik/Site/Welcome.html[/url]

I know some cars use a temp sensor to see if the EGR is operating. Temp sensors are really easy to fool.
One question, I know gas engines will heavily suffer fuel mileage if you block off the EGR. Would a diesel have any of the same effects? I don’t think so because a diesel only injects as much fuel as it needs to support desired power, but I could be wrong.

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2006 CRD

When I blocked mine off, Did not see any drop/gain in milage. I belive the EGR has the most effect at 1000 RPM and under. Hence the poor acceration from a stop. Above that, don't think it will has much effect.

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Wondering if anyone found the RPM range the EGR is actually open? Read once it was only open in low to mid RPM range, closed at highway cruising speeds. I notice a definate change in engine harmonics @ 1300-1400 RPM range when driving mine.

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2005 Liberty Sport CRD, Lt Khaki, sunroof

Thankful to now be an EX-CRD owner.

Well ours had right at 20,000 miles on it and still had the original filter. I use the same schedual for changing filters that I use on the Dodge. 6,500 oil change intervals, every other oil change I change the fuel filter, every forth oils change I would have changed the fuel and air filter.

That's conservative by all means!!!

The tec said both the intake hose from the Intercooler to the intake and the hose from the turbo to the intercooler would suck shut. That tells me that the turbo was not boosting, correct? Now I'm not a rocket scientist, but that is what I find hard to believe unless the computer went to limp mode and shut down the Variable pitch on the Turbo to stop boost.

Sounded like BS to me but I just let them play their games.

On a side note. TS performance that is big in the Dodge, Ford , and Chevy market has been playing with I believe an 05 liberty that runs in the low 13's in the quarter. I am going to contact them because they have a power box that works with the liberty. I want to see if they can possiblly set a parametter that will keep the EGR closed. If I have luck I'll let you all know.

Have any of you tried to put one onf TS's Boxes on?

Here's the link: http://www.tsperformance.com/new_product.asp and the box is about half way down the page.


Joe G

You will find this air filter lacks capacity to run a long time between changes. I ran my first air filter 10,000 miles and it starting giving me problems. My turbo wants to pass oil at the slightest constriction.

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2005 Liberty Sport CRD, Lt Khaki, sunroof

Thankful to now be an EX-CRD owner.

I talked to TS performance last friday. I am working with one of their Engineers to see if we can fool the computer into thinking the EGR is working, however in reality it will stay shut!!

Who knows if we can make it work, but it's worth a try!!

HAs anybody tried an AFE filter to increase the longevity of the Air filter?

I have one of TS Performance's modules in the car and I love it. Have had to keep it out lately because the EGR and MIX valve have gone bad in the last month. As soon as my tech gets back from vacation and fixes it Ill be putting the module back in.

Would be nice if TS could figure out how to shut the EGR off. I hope it would just be an update to my current module and not a whole new one.