Question about 2005 Jeep Cherokee 2.8

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2005 jeep cherokee engine knocking and blowing oil

Knocking noise on top of engine and blowing oil

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  • Jeep Master
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Blowing oil where.?

SMOKE or liquid oil.

but id be all over noise, and liquid oil, like a wood pecker finding grubs.

Posted on Mar 31, 2014

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Posted on Jan 02, 2017

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SOURCE: 2005 jeep grand cherokee ac blows cold only on drivers side

I agree, these vehicles have a problem with the blend doors and since the accuators hit the door when it opens and closes, it breaks the doors. and it's a huge job to replace them.

Posted on Mar 12, 2009

SOURCE: oil leak in my 92 jeep cherokee

The most likely place for an engine to start leaking oil (when it's coming from the top and not the bottom) is around the valve covers -- the gasket goes bad. Next most likely is camshaft seals.

Sometimes just tightening the valve cover botls will stop it or at least reduce it.

Posted on Apr 29, 2009

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SOURCE: 2005 Jeep Grand Cherokee Shifting Problems

Check the Trans fluid level with it running and at operating temperature. Jeep NAG1 transmissions are known to have the input electric seal leak trans fluid. Not an exspensive fix add Mopar ATF4 and then relace the guild seal.

Posted on Jul 20, 2009

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SOURCE: 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.

Posted on Dec 10, 2009

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kirkx
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SOURCE: 2005 jeep cherokee, no heat, just blows cold air,

Assuming the water is getting hot, (you could touch the hoses to make sure), then it is the controls, the vacuum the controls use, the vacuum servo that operates the valve, or the valve itself.
It is easiest to start with the last, because you can watch it move from the engine compartment, as someone else turns the temp switch high and low.

Posted on Feb 22, 2010

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2 Answers

Knocking noise


First confirm the oil level is adequate by checking the dip stick. If the oil level is okay you may have a partial blockage that is starving the oil line leading to the sensor. Missed regularly scheduled oil changes may result in this happening.
If sludge is the problem your dealer can recommend an oil additive that may clear out the problem.
You may also have a failed sensor as well.

Dec 02, 2013 | 1988 Jeep Cherokee

1 Answer

2000 jeep grand cherokee has a loud knock in engine. Started out as a ticking sound like a lifter, know it is a loud knock. This is a V-8 Engine


If the noise still sounds like it's on top, I'd remove the valve covers and check the rocker arms to make sure they aren't broken or worn. Also crank the engine over and observe how far each travels. If any are different, a lifter or lifter and cam have gone bad.
If your oil pressure is low or the noise is deep inside the engine, likely you have a crank bearing problem. In most cases it's more economical to get a scrapyard replacement rather than do a rebuild.
Before doing anything like that, have an experienced tech listen to it. Only other thing that can make a noise like that is a broken flywheel. A good tech can tell the difference between noises and give you better advice than I can because he can hear it.

Nov 03, 2010 | 2000 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.

Dec 09, 2009 | 2001 Jeep Grand Cherokee

1 Answer

'99 jeep grand cherokee v6 loose rod in engine


Likely you need more than one (not rod, but rod bearings) In most cases you get knocking noise and low oil pressure as symptoms. If caught early you can do this in-car otherwise engine needs crankshaft and all bearings as well as new pump and system flush.

Jun 20, 2009 | 1999 Jeep Grand Cherokee

1 Answer

Knocking noise in engine 1998 jeep cherokee


Knocking noise can come from one of three places. Broken flywheel, Worn rod or main bearing. (bearing problems usually are accompanied by lowered oil pressure) An experienced technician can usually tell which is which. If bearing wear is on the rod bearings only and is light, it can usually be corrected. Main bearings require engine removal and is far more expensive. The oil pump should be replaced with either, but is not the cause of the problem. Extreme wear on bearings will also damage crankshaft. If so, it must be replaced.

Jun 16, 2009 | 1998 Jeep Cherokee 4WD

1 Answer

Knocking noise when accelerating!! It's loudest when I first start my Jeep grande Cherokee leredo (2000) but then only happens when I step on the gas. Any ideas of what this could be. I do need my...


Knocking noise is generally from the engine. What is your oil pressure? If pressure is low and oil is reasonably full, refrain from driving it till the cause is determined. Noise can also come from the transmission or transfer case but more likely it's from the engine.It can come from sticking valve lifters (moderately bad to potentially serious) connecting rod or main crank bearings (always serious) or piston slap (annoying, expensive but not terribly serious unless very bad) Piston wristpins can also knock but are very rare in todays pistons. Either way, this is not an item to ignore.

Jun 03, 2009 | 2000 Jeep Grand Cherokee

1 Answer

2005 jeep 5.7l Hemi


It could possibly be "detonation" knock .. try using some premium (high) octane fuel and possibly an octane additive for a tank or two ..

Feb 21, 2009 | 2005 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

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!

Jan 14, 2009 | 2001 Jeep Grand Cherokee

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