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tleeming 04-29-2013 04:20 PM

2007 CRD Timing chain rattle?
Hi folks.
There does not seem to be any chatter here about timing chain rattle...sounds like that is what I 90,000kms.....the dealer mechanic agrees....estimated repair at just under $4000 cdn.
It is most prominent at 1500 rpm but I can hear it at higher rpm's now and coming from the timing chain area. I have towed a travel trailer at least 50,000kms with the Jeep in the last 5 years to Mexico and back...I suppose that may be a factor?
Anyway, has anyone on the forum "been there and done that" yet.?
Thanks in advance

suzieque 04-29-2013 10:47 PM

Yours is the first timing chain replacement requirement i have ever read about. The price suggests a multi day tear down. Can you provide more details about the quote?

tleeming 04-29-2013 11:56 PM

Parts $1158 Labour $2360 Taxes and misc. supplies and evv. fee $458.57
Total $3976.57.
The Jeep mechanic, who is Mercedes trained, said he had not done one before.
Locally, I do not have a lot of options other than another Chrysler dealer.

Drewd 04-30-2013 12:34 AM

I'm not familar with the 3.0L timing chain system. I know in past some vehicles had a tensioner that was regulated by oil pressure. Often switching to a thicker oil fixed any problems with a loose chain.

If you are using 5w30, try 5w40.

Good luck.

jamie1131 04-30-2013 01:11 AM

At 90000km I seriously doubt the chain would be worn out. The towing shouldn't be working the chain any harder than running at the same speeds with no load.
Can you post a video? I'm an automotive engineer and I spent 6 years designing engines and a good chunk of that was working on solving noise issue, lots of them timing chain related.

tleeming 04-30-2013 10:25 AM

Hi, thanks for the comments so far. I will post a video shortly.
I've been surfing around and it looks like the parts quote is about double the Mercedes MSRP! No surprise I guessprices...also typical Canadian .
I wonder if my local Mercedes dealer would take it on?
There is another thread here that talks about the issue

tleeming 04-30-2013 02:41 PM


I have taken a video of the Jeep running. You can clearly here the rattle. The camera was sitting on the drivers side on top of the battery. With my stethoscope on the drivers side camshaft cover, I can hear the the rattle start. It does not seem to be rattling on the passenger side. I think there are four tensioners in the kit so I am suspecting it may be one of the drivers side tensioners that are shot.
Hope this video link works


suzieque 04-30-2013 05:07 PM

according to alldatadiy:

Timing chain - 5175510AA lists for $485, 9.9 hours to replace.

There is a Timing Chain Tensionining Rail on the drivers side of the engine. I wonder if that is your problem. Its almost the same amount of tear down though to replace.

There is a also a Timing Chain Tensioner on the passenger side of the engine. Apparently its visible down from the oil fill cap. You replace it without opening the timing cover, so that is handy. By the way, if you open the oil fill cap, is the timing chain visible? I cannot remember if it is.

I am not seeing a video at picaso, just a jpg.

jamie1131 04-30-2013 05:13 PM

Listening to the video you emailed me I'm not confident that its the chain. Does the vehicle still drive ok? Is it down on power? Is the MIL light on?

The reason I ask these questions is because it sounds exactly the same as an old Mitsubishi I owned when a piece of debris went through the turbo charger and ripped one of the vanes off the compressor wheel. However this had a massive loss of power and on the CRD it would throw a code due to lack of boost pressure.
In my experience cam chain slap tends to build up and not come and go instantly like the noise in the video.

tleeming 04-30-2013 09:18 PM

The engine is not down on power. I towed my trailer to Mexico with it rattling but it is rattling more now after a trip of 7500 miles. There are no codes or lights displayed. The rattle kicks in at about 1200 rpm.
I guess the only way is to strip it down.

Thanks for the info on the chain cost and labour time. I suspecting the dealer had padded the labour estimate!
The timing chain is visible from the oil filler and so is the tensioner...both look OK
Sorry about the video as the rattle comes out well.
Can somebody advise me how to attach a video to a post?

TurboDiesel 04-30-2013 09:53 PM

are u on BC jeep club by chance?
some good local mechincs there that alot of people swear by

i have not personally had work done by them but its gotta be cheaper than $4000, maybe check that out?

where in BC u located? im in Langley

tleeming 04-30-2013 09:58 PM

I am not familiar with the BC Jeep club. I live on an island off Vancouver Island.
I would appreciate info on good mechanics

TurboDiesel 04-30-2013 10:06 PM

oh ur on the island, theres a place in abbotsford called fearless fab that has gotten awesome reviews

maybe go onto here: and post up on the vancouver island section and see if anyone local can help ya out?

might be cheaper than $4000
also good to get a second opinion..maybe it is something different?

suzieque 05-01-2013 09:03 AM

I also have limited options in a small town for service.

If it were me though, I would get a new timing chain tensioner and replace it myself before doing the timing chain. Seems to be about a 15 minute job. I can send you some info on it. It seems i cannot post pdf files to this website, so you can pm me your email address and i can send the pdf.

tleeming 05-01-2013 11:43 AM

Timing chain rattle
Suzieque....I tried to send you a PM but your box is full:)

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