TIMING CHAIN RATTLE

T

tag

NAXJA Forum User

Location

leeds yorkshire england

• Jun 16, 2006

• #1

HI ALL

Iv'e just bought a 2.5 petrol cherokee sport it ran sweet till a few days ago! it now has a anoying rattle coming from the timing chain area. this came on suddenly iv'e been told the tensioner may have come adrift. so have orderd new chain, tensioner, sprockets, gasket set, how hard is this to change? am i on the right track, and is this common on the 2.5,

 

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Dr. Dyno

NAXJA Forum User

Location

Al Ain, UAE

• Jun 16, 2006

• #2

If the engine has a high mileage it's certainly possible so I do think you're on the right track. It's not too hard to change but the most difficult parts of the job will be to remove the clutch fan and the harmonic balancer. You can add a new HB to your list of replacement parts as these are known to separate at the rubber sandwich with high mileages.

 

Jeff in VA

<---respect

Location

Richmond, VA

• Jun 16, 2006

• #3

Got the same thing going in my MJ. It's been doing it for about the last 20K miles :laugh3: I can remember the exact day and location when it started doing it.

There was another 2.5 MJ that pulled up to me at a stoplight last fall suffering from the same affliction. Must be more common than I thought.

Gonna fix it soon, but I can say thus far it hasn't really affected anything. 170K and going strong (well, as strong as a 2.5L can hope to anyway)

 

T

tag

NAXJA Forum User

Location

leeds yorkshire england

• Jun 16, 2006

• #4

thanx guys. im new to jeep so all coments are welcome, by the way whats a HB ? iv'e had 4x4s in the past landrover etc but fancied a jeep this time. cheers.........

 

T

tag

NAXJA Forum User

Location

leeds yorkshire england

• Jun 16, 2006

• #5

just thought do you mean the harmonic balancer (crank pully)..........

 

87manche

NAXJA Forum User

Location

Ohio

• Jun 17, 2006

• #6

tag said:

just thought do you mean the harmonic balancer (crank pully)..........

Click to expand...

that's what they meant. it's two pulley pieces held together with some rubber in the middle. When it seperates it generally chews up belts. You may as well replace it if your dont the timing chain, as it has to come off anyway.

 

langer1

NAXJA Forum User

Location

Mineral City,Ohio

• Jun 17, 2006

• #7

Also When it seperates it rubs the chain cover and sounds like a bad timing chain noise.

 

Johnny V

NAXJA Forum User

Location

Jersey Shore

• Jun 17, 2006

• #8

langer1 said:

Also When it seperates it rubs the chain cover and sounds like a bad timing chain noise.

Click to expand...

Also when the rubber separates it can cut right through the timing chain cover...I was lucky and changed mine in time.

 

T

tag

NAXJA Forum User

Location

leeds yorkshire england

• Jun 17, 2006

• #9

hi, and thanx for the advice, i also have a problem with the drivers door not locking with the remote key fob !! all the other doors lock ok! any ideas..........

 

87manche

NAXJA Forum User

Location

Ohio

• Jun 17, 2006

• #10

likely the door lock isn't getting any power. Check the wires where they go from the door to the pillar. All the flexing over the years may have cracked/broken the wires.