How many GC CRD owners are on this forum

tomasnc · **Posted:** Wed Sep 19, 2012 9:58 pm

Having just totalled my Liberty CRD and not seeing many prospects around the bend I have been looking to see what the Grand Cherokee CRD market place has to offer.
The 4x4's are not too plentyful.

I was speaking to a LJ's member today and he commented that the 3.0 l was a costly engine to service and parts could be an issue too.

I would enjoy hearing from anyone that has or currently owns a GC CRD. Hearing the good,bad and ugly would be appreciated.

Thanks,

Tom

Drewd · **Joined:** Mon Feb 06, 2006 12:24 pm **Posts:** 902

I'm a GC CRD owner. I don't know about parts other than an alternator, it has been 100% reliable over the past 4.5 years I've owned mine. Ours is worked very hard towing a 27 foot trailer with an Immotion Stage II tune.

Lots of higher mileage GC CRds out there which means they are hitting 100k without many problems.

As for parts, the 3.0L mercedes benz engine is very common and getting parts shouldn't be an issue.

Some things to consider about GC CRD

1. DPF-if you do not do a lot of highway driving regularly, you may have an issue with DPF regeneration and premature failure.

2. MB 229.51 oil (ESP or Low SAP oil) is a must or your DPF ($2000 item) will fail prematurely

3. Oil is $10 liter and the GC CRD takes 10 liters of it

4. Swirl motor: intake gasket on turbo can leak oil onto swirl motor causing it to fail and a very costly $2000 repair. Solution: Provent CCV filter in intake, upgraded intake manifold with improved gasket. Other options include 4.7k ohm resister mod or GDE tune with deletes swirl motor usage.

5. Alternator failing prematurely: Oil from oil gas cap seapage can damage alternator. Fix: TSB for splash guard.

6. VERY IMPORTANT: 5 liters of oil during oil filter change must be poured down oil filter assembly, the other 5 liters goes into oil fill hole. THIS IS TIME CONSUMING AND MOST DEALERS/OIL shops don't know about this TSB. If this isn't done, premature engine failure (lower end) from dry bearing startup can and has occured....after filling oil this way, vehicle must be allowed to sit 20 minutes before starting it up.

7. A DPF costs $2000 but you can get a DPF delete for off-road use for about 1/2 that.

8. NO BIODIESEL with active DPF and dpf regeneration----risk of oil polymerization and premature dpf failure.

9. GC CRD could use an extra gear at highway speeds (2750 rpm at 75 IIRRC)..perfect for towing but seems very high compared to the Liberty CRD and is unnerving at times.

10. Would I buy another? ABSOLUTELY. In fact, I'm considering selling my Liberty CRD and putting hte $$ towards another GC CRD.

Joe Romas · **Posted:** Thu Sep 20, 2012 8:46 am

I've read there's supposed to be a VM V6 powered 2013 GC available if you can wait and have the $$'s :JEEPIN:

jinstall · **Posted:** Thu Sep 20, 2012 12:08 pm

CRD Wrangler is what I'm waiting on.

Big Montana · **Posted:** Sun Sep 23, 2012 7:27 am

Sorry, what's the DPF?

ChooChooman74 · **Posted:** Sun Sep 23, 2012 8:48 am

Big Montana wrote:

Sorry, what's the DPF?

Diesel particulate filter. Pain in the royal booty.

Sent from my DROID BIONIC using Tapatalk 2

Big Montana · **Posted:** Sun Sep 23, 2012 10:15 am

Is that the thing that heats up every few thousand miles and burns the particles smaller? Is this the thing that makes diesels more expensive in the US?

papaindigo · **Posted:** Sun Sep 23, 2012 11:45 am

Most on road DPF filters regenerate as required by burning which typically requires operation at highway speeds hence they are a significant problem for vehicles that primarily are driven in-town and at lower speeds such as fire engines, trash trucks, delivery vehicles, etc. Failure to do a timely regen. can be expensive.

FYI I'm not sure they are legally "required" but they are commonly used as one way (personal bet cheap for manufacturers and an expensive pain in the you know what for customers) to meet emission standards including Euro V and VI standards.

Diesels are more expensive in the US for a host of reasons including basic supply and demand not to mention that many/most non-commercial diesel vehicles sold in the US are imports or as in our case use an imported engine.

Drewd · **Joined:** Mon Feb 06, 2006 12:24 pm **Posts:** 902

On the GC CDR, it regenerates about every 770 miles when the pressure differential sensors show that the DPF is clogged/restricting exhaust flow. Regeneration takes about 15 minutes or so of driving (best done at highway speeds) when ECU triggers fuel injectors to inject fuel into the cylinder during the exhaust stroke. This causes DPF to reach high enough temperature to burn out the trapped diesel exhaust soot.

Too much city driving, short trips, regeneration stopped prematurely by engine shut down, and other factors such as improper oil or fuel additives can significantly decrease DPF life-it will fail by being clogged with ash and other byproducts that can't be burned by regeneration high temps. Replacement of DPF is about $2,000 My wife drives our GC CRD and she senses when a DPF regen is occuring and will hop on the highway for about 15 minutes to ensure it is completed before shutdown. Frequent high speed or high load (towing) driving increases exhaust temps so that passive regeneration occurs.

Since diesels should be mostly driving on highways, regeneration is not much of an issue. However, I suspect many diesel owners are typical drivers who use them for short 2-4 mile commutes which is not only bad for the DPF but not good for a diesel engine either.

How many GC CRD owners are on this forum

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