Question about 1998 Jeep Grand Cherokee

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A lifter clicking noise

My 98 Jeep Grand Cherokee has a clicking noise from the engine. 5.9 liter or 360 cu in motor. I drive it slow and don't beat it. Is this easy to fix? It has 150,000 miles on it.

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Its your valve lash thats clicking. make an oil change and put some oil treatment. if it still exist, adjust your valve lash.

Posted on Jan 05, 2009

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2002 grand cherokee engine tapping loudly


My first guess would be a failing valve lifter. They can become weak with age and not able to hold oil pressure.
Especially in an engine with that many miles on the clock.
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1999 Jeep Grand Cherokee has a stuck lifter how do you fix it or do you need to get a new engine?


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I am in the process of purchasing a 1994 GJCL-V8? What size is the motor on these trucks? Are they dependable, yet, expensive to fix?


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Does 2002 Jeep Grand Cherokee V8 have hydraulic lifters? I posted a question a few days ago regarding engine loud ticking which sounds like lifter noise. It doesn't have that deep sounding knock. I went to...


I would not believe any thing some parts store loser told you. Theres not a V8 built that doesnt have hydraulic lifters, unless its some fancy racin engine. It has hydraulic lifters, but unless you dont change your oil every 5k miles and/or use some cheap oil, there should be no problems. You should have a real mechanic look at it, and verify that you have good oil pressure. If it does, I would change the oil and use some MOBIL 1 and drive it, the oil will clean the lifters somewhat. If the eng has low oil pressure, that will need to be addressed.

Dec 19, 2009 | 2002 Jeep Grand Cherokee

1 Answer

2001 Jeep grand cherokee motor knock 4.7 motor


First, if the noise is from the upper part of the engine and is more of a tapping than a knock, likely you have a problem in the valvetrain, most often a bad lifter or worn rocker arm. If the noise is low, deep inside, the noise is from a bearing. This is generally accompanied by lower than normal oil pressure. Regardless of the underlying cause, correcting the cause will not stop the knock. To do that correctly, the engine needs to be removed and all crankshaft bearings and the crankshaft itself need to be replaced (crank can sometimes be "undercut" and thicker bearing shells can be used depending upon the amount of wear.) If caught very early, sometimes only one bearing can be replaced in-car, but in 99% of all cases I have ever seen, most will fail again, sometimes more severely if done this way.

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1 Answer

1999 jeep Grand cherokee


If you have a connecting rod problem, likely it is not the rod itself that has failed, rather, the crankshaft bearing on that rod or the wristpin. Usually though when either has failed, the knocking is an all the time thing, varying with engine rpm. A good tech can usually tell the difference between the two just by listening. A beraing failure is generally also accompanied by a drop in engine oil pressure as well. not so for a wristpin. An intermittent noise (tapping) can also indicate a valve lifter problem... though a lifter can also make noise during a low oil pressure situation. Lifter noise is heard from the top of the engine, both other noises are from underneath.
I would first have a different shop give you a second opinion. If it turns out to be a rod bearing, generally this damages the crankshaft and also sends bearing material throughout the entire engine. To properly repair would require complete teardown and rebuild, or replacement of engine. This does not hold true for lifter or wristpin problems, unless severe, though either can be expensive, even if you do the job yourself..
How long is your powertrain warranty?
Definitely get a second opinion before doing anything else!

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1 Answer

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sounds like the lifters losed prime! here is a little trick that ive learned add a half off quirt off transmission fluid to the oil to prime the lifter

Nov 30, 2008 | 2002 Jeep Grand Cherokee

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