06 CRD

~100K miles

@ ~ 85K miles I did:

Head gasket
Valve-train
Timing belt (including all new idlers, new water pump, new thermostat)

Also:

GDE hot tune
Euro TC
New Trans pump
Hayden Fan Clutch
New Alternator (old one was good, but needed new pulley)


I'm going to take the old girl on a road trip, towing my ~5,000 lbs travel trailer, but before I do, I want to get everyone's opinion on this engine rattle.

https://www.youtube.com/watch?v=Ivp1CYr ... e=youtu.be


Only 3 things I could think of is the viscous heater, The High pressure pump, or that's pretty much normal.

Thoughts?

Am I missing something?

She runs like a top, pulls hard, getting great mileage, and it's been rattling for a long time, but taking it on a long road trip with the trailer makes me nervous.

Really bad motor mounts?

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2006 LTD Bright Silver loaded with all the needed mods, CCV intact.
Proudly supporting CRD vendors, and their development of quality parts and accessories.
Equipped with HDS thermostat, plenty of heat, faster warm-ups, increased fuel mileage.

Exhaust leak?

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U.S. Army Retired

I think flman is right, or you lost 20 bolts somewhere in the engine compartment, lol. Did you try to locate the place the sound comes from?

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2005 kj CRD, samco, suncoast tc, provent, Kennedy lift pump, GDE ECO full torque, 2nd gen filter head, 245/70/16 a/t tires, mopar light bar, fumoto oil valve, OEM Skid Plates, ARB Front bumper and HD OME, tru cool LPD47391 40k GVW tranny cooler (stock cooler delete), FF Dynamics e-fan and shroud, rocker arms replaced, HDS2 190F thermostat.

Here's my take on it.....

First replace the noisy and rusty alternator de-coupler.

Second: check your fan clutch for play and wear.

Third: it's possible that a loose motor mount can cause the engine to jerk upward.

Fourth, soot surrounding the lifters and rockers causing excessive noise.

Fifth, dirty injectors causing a rough running engine.

Good luck and report back with your findings because as much as we like to help you with our knowledge, we'd all like to know the cause for own knowledge base.


My

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2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"

check your harmonic balancer and torque convertor bolts if none of the above work for you. it sorta sounds like the decoupler on alternator but if the rubber goes bad on balancer it can be noisy

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06 Libby, maf unplugged, flowmaster , 201,000 mi and still rolling
06 Jetta TDI
4020 JD
2640 JD
02 Chevy 2500HD 8.1L 496
64 Chevelle project
Kubota diesel mower
5.9 Cummins

Alternator and pulley has less than 10k miles on it.

Tc and tc bolts have less than 5k miles on them as well.

Tc bolts have locktight

The valve train, including the lifters and rockers, has less than 20k miles on it.

Not sure if the motor mounts could cause a noise like that in park.....

Turbo?

That definitely didn't sound like an alternator pulley. It sounds more like a trashed bearing, but mounts are known to have similar noises. Put it in gear and see if the noise changes a bit. A mechanical sthetoscope may help locating the area

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2005 kj CRD, samco, suncoast tc, provent, Kennedy lift pump, GDE ECO full torque, 2nd gen filter head, 245/70/16 a/t tires, mopar light bar, fumoto oil valve, OEM Skid Plates, ARB Front bumper and HD OME, tru cool LPD47391 40k GVW tranny cooler (stock cooler delete), FF Dynamics e-fan and shroud, rocker arms replaced, HDS2 190F thermostat.

One of mine that had bad mounts sounded like the engine was grinding nuts. The CRD I bought new, needed a mount with less then 50K on the clock, they all seem to need these mounts a lot, so that is most likely part of the noise, if not all of the noise?

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2006 LTD Bright Silver loaded with all the needed mods, CCV intact.
Proudly supporting CRD vendors, and their development of quality parts and accessories.
Equipped with HDS thermostat, plenty of heat, faster warm-ups, increased fuel mileage.