Question about 1998 Jeep Cherokee

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Timing chain/belt and water pump

I've a 1998 Jeep Cherokee (4.0L). I Love it. It has 135,000 miles. Question?--When should I/when should I have, changed the timing chain/belt and water pump? I have my truck serviced at a Jeep dealer and they've not recommended such service. I prefer 'preventative' maintenance vice 'breaking down'.

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On your Jeep Cherokee you have a timing chain that is made to last a much longer time then timing belts, under normal service it is not requred to change, on the other hand it is recommened you replace the water pump and all coolant hoses and renew the coolant.

Posted on Nov 30, 2008

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If it would give you peace of mind its not going to hurt changing them now. i replaced mine at 150,000 because i dont like breaking down either.

Posted on Nov 30, 2008

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1 Answer

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Chain and gears are not super expensive and if you buy the best ones you can find, if you replace yours at 225-250 thousand miles the new one should outlast the vehicle.

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Hello, got a car question for you fine people. My friend had a timing chain that broke on his car at 50,000 miles. Kinda early for something like that I would think. What would cause a timing chain to go...


50K miles IS premature for a chain to break. They're pretty tough. Are you sure it's a chain? If it is a BELT, it could be old and broke due to age. They are a synthetic rubber and eventually they deteriorate over time.

You don't specifically state what kind of car your friend has, so I am presuming a 1998 Accord. That car should have a belt.

Either a belt or a chain can fail prematurely if the tensioning system fails. This will allow excessive slack in the chain or belt which will cause damage to the affected drive components. The tensioning systems can fail due to one or more of the following:

Lack of oil pressure, failed tensioning springs, failed pulley bearings, over-revving the engine for ridiculous periods of time, and failed plastic guide components.

Belts can also fail due to chemical contamination (oil or antifreeze leaking on the belt).

Finally - the water pump can fail which will derail the belt as the belt drives the water pump on many Honda 4 cylinder engines.


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