I had a strange happening today. I pulled up to work and shut down the jeep.....a noise continued after I turned the key. It was quite loud....an electric motor running. I opened up the hood and it seemed to be the fuel pump. I started and stopped the engine several times and each time the pump continued to run for 60 seconds or more after the engine had been stopped and the key was taken out of the ignition. I've never heard the pump run after the engine was shut down before. After this happened the first time today, now the fuel pump starts running right when I turn the key...before the engine starts.

Houston, we have a problem.

Anyone had this happen before?

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2005 liberty Sport CRD

There is no electric fuel pump on these engines. It has a small mechanical lift pump built into the high pressure pump. You might be hearing what others have heard, something about the EGR air flow control valve. Good luck!!

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Flame Red 2005 Rubicon Unlimited, 4.0L, 6sp, dual tops, Amsoil ASL 5W30 engine oil and EAO42 filter, IPF 920hc head light conversion with PIAA Xtreme White plus bulbs, Sylvania Silverstar H3ST fogs, Armadillo front/rear bumper caps and pretty much loaded.A few pics of my rig. http://www.gwkweather.net/id5.html

Or maybe the CRD has a auxilary waterpump, which runs when the engine shuts off. Thats what my ML320 had.

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2005 CRD Sport
Mods: Glasspack, OME HD Struts & Springs, 2" Daystar lift,
255/70/16 General Grabber AT2's on MOAB's
ORM&EHM with great success!
TJM T17 Bumper, 50W KC HID's

The coolat pump can run after shut down and so can the main coooling fan.

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91 MB 300D 2.5L Turbo. Her's

05 MB E320 CDI. Mine

Its the throttle body EGR/Flow valve. PN5142799-AA. Had the problem, same symptoms you have.

Same problem here...diagnosed yesterday 6/7/2006 and part should be here Tuesday. What's funny is when I shut my Jeep off, the noise will cycle, so it sounds jut like one of those emergency notifications that you see on TV late at night. Funny but annoying...

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2005 Black CRD Sport
All J CRD Frankenlift with 500 fronts, Boulderbars, and Superskid
Kilby Gas Skid
Yukon Rear Axles
265/75 16 TrXus M/T's and Bridgestone Revo's
Fumoto Valve
Aero Turbine 2525
Rock Lizard Komodo Bumper
Sundance Custom's Front Bumper

Update:

Called the dealership close to my house. The service manage said that there was nobody at his shop that has training for the CRD and I should take it to another dealership.....I appreciated his honesty, but that meant I had to drive out to the suburbs.

Took it to the dealership near work and one guy looked at it, went and got another guy. The instant I turned the key and the noise started, he smiled and said it was the egr flow control...he has seen several of them, apparently.

You guys were right. I knew you all would know.

The parts are on order. In the mean time, I have to listen to that incredibly annoying sound. The only way I can describe it is that it's a combination of a kitchenAid mixer spinning on high speed along with a very old window air conditioner going at the same time. Quite pleasant.

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2005 liberty Sport CRD

Please tell me which dealer service department you went to so I can start going there. It's nice they even had a clue...

Update:

The part came in after 3 weeks of waiting. I just picked up the Jeep today and all seems to be back to normal.

I did notice something since it is fixed. When turning the key to OFF, the engine stops promptly without any rattle or coughing. When the EGR flow valve was bad, the engine would kind of "cough" to a stop and cause a bit of vibration. Now it is just a very positive stop altogether. In retrospect, I do remember noticing the engine becoming a bit rough at stop about a week or two before the EGR flow valve started grinding and making noise. At the time, I thought that it was acting a bit rough all the sudden, but just ignored it because it was not voilent or anything...I thought maybe it was just in my head. If yours starts to be a bit rough when you shut it down, that could be an early symptom that you may have the EGR flow part going bad. ...or it could probably be a number of things. Just a thought.

The service people at the dealership told me that they would be sending my paperwork in the mail later because they had trouble identifying the appropriate repair code for the warranty work. Apparently they don't get many of these in the shop.

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2005 liberty Sport CRD