Question about Jeep Cherokee

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Hi guys, my 1999 Jeep Cherokee is making a terrible knocking noise and smoking heavily at the same time. .......any ideas on what it could be ?

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Your engine is shot.

Posted on Jan 04, 2011

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1 Answer

Have a 2004 jeep grand cherokee and when i push on the gas peddle it makes a knocking noise and the heater seems to have gone out at the same time


Heater 'gone out' = low coolant. Knocking noise = internal engine damage? Maybe low coolant = internal engine damage.

Nov 14, 2016 | 2004 Jeep Grand Cherokee

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2005 jeep cherokee engine knocking and blowing oil


blowing oil where.?

SMOKE or liquid oil.

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

Mar 30, 2014 | 2005 Jeep Cherokee 2.8

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Knocking noise


Try to put head gasket fix may fix the problem,I did works.

Jan 28, 2014 | 2001 Jeep Grand Cherokee

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I have a jeep grand cherokee limited. 4.7l v8. I just got off of the freeway and it was running fine but now it is nocking heavily and it is making a very high piched squeal noise and every time i stop it...


My son had a similar problem on his jeep you may want to check your diff and transmission oil levels it couold also be that the bearings may have gone as in his case

Jun 06, 2013 | Cars & Trucks

1 Answer

Hi! I have a jeep 2001 Laredo and a noise is coming from the engine.I wanted to sell the jeep but how can i get this fixed?Some mechanics do not want to get involved! Thanks!


Depends on the noise you are hearing and how the engine is performing with the noise versus before the noise came along. It come be something as simple as an idler pulley making noise which is replaceable in 10mins or crankshaft main bearings knocking which would be more cost/time effective to replace the engine. Need a better description of the noise to diagnose online. Top/bottom, knock/tick, does it go away when idling/under load etc... the more details the better.

Jun 08, 2011 | 2001 Jeep Grand Cherokee

1 Answer

Have a 98 Jeep Cherokee,engine light is on ,has a knock when it accellerates, have an y ideas??? (sounds like engine knock).


have truck scanned for trouble code most auto stores such as auto zone/ advanced auto do it for free code gives u start point as to knock which is where code is coming from most knock noise is lower engine problems rod knock-wrist pin -main bearing going

Nov 26, 2009 | 1998 Jeep Grand Cherokee

1 Answer

I have a 1999 Jeep Grand Cherokee Limited that is making a rattling/ticking noise under the hood and I cannot figure out what it is! We did an oil change and added Rislone, it quieted it some but not...


how many miles on it,sounds like lifter noise which is normal for high mileage jeeps,but if you have over 140k it is not a good idea to run synthetic oils as they are thinner than conv oil and it might start to consume oil.

Sep 26, 2009 | 1999 Jeep Grand Cherokee

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

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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