Question about 2001 Jeep Cherokee

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Noisy engine loud sound coming from the valves, or pushrods is notice in a 2004 6L Jeep grand cherokee. since I changed the oil the first 10 minutes in the morning or after work is noisy really noisy. any idea about this issue?? somebody have similar experience with this engine and how should be corrected

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Sounds like you may have a rod going out on the truck...

Posted on Aug 22, 2008

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1985 cj7 jeep 258 engine is noisy on idle. rattles constantly , rebuilt engine twice and prob won't go away.


This is kind of hard to judge without hearing it. Lets say the noise is the pellets in the Catalytic converter that some types of automakers used, with low flow at idle, the loose pellets can bounce around until the flow increases and pins them to the insides of the Catalytics.

However, if you rebuilt the motor you would know some mechanical stuff. I can move on to more possibilities.

Oil pressure starvation can make the pushrods rattle in the rocker arms. The engine oil pressure will cushion the critical area between the rocker arm and the pushrod seat.

On the rebuilds, have you worked on the heads? Like valve spring tension and pushrod clearance? I have had engines that would idle perfect until accelerated and return to idle clanging and missing. The valve springs were shot. Then I have had some GM motors that had hydraulic lifters yet the pushrods were different lengths and that is how the pushrod clearance was made; by changing individual pushrods to get the correct clearance.

This is something that can occur when the valve seats are cut. The valve stem can ride up into the head slightly when the seats are cut.

Now you may have replaced the camshaft or the lifters or not. But it is recommended that each lifter is paired with a camshaft lobe. If you mixed the lifters into different positions, you may have distortions that are resulting in noisy clearance problems. For that matter, camshaft bearings may be loose.

The Jeep and American Motors cars used a 232 CID engine too. Can't say what components were different but you may have mixed parts.

Now some models used a Rattle or knock sensor, and in the old days, you could get a rattle from weak distributor springs in the breaker plate. The mechanical advance would throw out too fast.

I am curious. Would like to know what you found.

Oct 31, 2012 | Cars & Trucks

1 Answer

I have a 98 jeep grand cherokee and I've noticed


could be a radiator leak whens the engine its hot

Mar 16, 2012 | 1998 Jeep Grand Cherokee

1 Answer

My jeep has a knocking sound coming from the engine and makes the same clicking/knocking sound when I'm accelerating what could this problem be?


noisy lifters, or piston slap, i just had one where the piston went through the block, try on your next oil change putting a liter of tranny fluid in it with the oil, the better lubrication will settle a noisy rocker

Mar 23, 2011 | 1999 Jeep Grand Cherokee

2 Answers

Noisy valves 5.2 engine


How noisy are they, are they noisy when you start the engine and then quiet down, do they get louded as you go faster? Noisy valves could be normal as Chrysler engines do have a clicking sound on these big engines. It is a hemi by the way.

Mar 02, 2011 | 1995 Jeep Grand Cherokee

2 Answers

I just did a few repairs all at once. I replaced the oil pan gasket, oil filter and oil. I replaced the transmission fluid filter, transmission pan gasket and transmission fluid. I put in new spark...


I would guess one of the valves are sticking or the lifters, but to me it sounds like the oil pump is either clogged or not working. Which would explain the engine light and the tapping sound. I hope this helps Tim

Aug 26, 2010 | 1994 Jeep Grand Cherokee

1 Answer

Grand Cherokee Differential 98 Model


yes you can repair.add differential oil then try to road test.if you notice the same trouble then overhaul it.

Jul 06, 2009 | 1995 Jeep Grand Cherokee

2 Answers

99 Grand Cherokee loud lifters 4.0 engine


You could increase the weight of your oil but don't go to high. this will decrease the noise a bit.

Mar 14, 2009 | 1999 Jeep Grand Cherokee

1 Answer

Valve knocks when running reaches 1500 rpm


First, nothing you have done has anything to do with valve tappet noise. What is your oil pressure? Have you positively identified the noise as a lifter (tappet), OR COULD IT BE AN ENGINE BERARING OR WRISTPIN? Other than tearing it down and replacing lifters, rockers or pushrods or possibly even the cam, if oil pressure is good, change the oil and put a quart of Marvel oil in there. If that does not clear it up in a few days, you will have to go inside the engine. You likely have over 160k on that engine...consider using a replacement. Get an older tech to listen to it...it takes years to be able to differentiate between different component noises with any accuracy.
Personally, without hearing it myself, I'm betting it's a rod knock.

Feb 20, 2009 | 1995 Jeep Grand Cherokee

1 Answer

1998 Jeep Grand Cherokee running very loud.


does it have the 4.0L motor ? if so open the hood stand off to the side where the exhaust bots to the head and have some one rev it up quick if its coming fron under the hood by the engine the exhaust manifol is cracked. The 4.0L jeeps have had lots of problems with this.

Jan 08, 2009 | 1998 Jeep Grand Cherokee

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