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Knock in motor

Let wife drive car and it came back knocking

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  • Cars & Trucks Master
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Check the oil level .

Posted on Dec 29, 2013


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Posted on Jan 02, 2017

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SOURCE: knocking noise from rear of car

There are two common known problems with the rear suspension. One problem is the rear spring colliding with the rear lower arm during rebound. This is caused by a lack of support in the rear lower arm and the upper spring seat. The solution is to fit a spring isolator sleeve to prevent the metal to metal knocking. Another common problem is knocking of the top coils of the springs. A revised rear lower arm spring seat has been fitted since 02/2002.



Source: http://www.bba-reman.com/content.aspx?content=ford_focus_common_problems_and_solutions

Posted on May 16, 2009

  • 6982 Answers

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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exteriorspec
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SOURCE: knocking/thumping noise in rear end while breaking

I HAVE THE SAME PROBLEM I'VE BEEN DOING A LOT OF RESEARCH ON IT AND I THINK ITS GONNA BE THE BUSHINGS IN THE REAR KNUCKLE ASSEMBLY AND YOUR HAVE TO CHANGE THE WHOLE ASSEMBLY. I HAVEN'T TRIED IT YET BUT IF YOU CHECK BACK IN A COUPLE DAYS I WILL LET YOU KNOW

Posted on Jan 06, 2012

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Knocking rattling noise from engine appeared while driving loss lil power running but loud knocking in engine


You didnt state vehicle however if the engine knocks the knock sensor will back off the timing thinking its detination not an actual knock if its knocking loudly stop driving it, something is going to let loose

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Henry, first need to determine if it's the actual engine that is knocking. Other accessories (water pump, steering pump, etc) could cause a knock. If the ECM knock sensor picks up a knock, regardless of where it originated from, will start to make timing and fuel adjustments which may cause it to hesitate or "sputter". You can take off the drive belt and start the engine. This will be the tale. If you hear the knocking, it's obviously in the engine and could be as bad as crank bearings or even the torque converter. Have you had any work done recently? If there is no knocking when the engine is running without the serpentine belt, you should now be able to narrow down the bad component by rotating each drive pulley until you find the damage..

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My 04 Town & Country has a loud Knock in the motor


Why did the engine get hot? Coolant loss? Was the oil level too low before more was added? If it was low, how many quarts should have been added? I believe you have serious engine problems. Too much oil is as bad as too little. What happens when it is overfilled, is the oil 'foams', causing a lack of lubrication of internal components. Oil in a foamy state will not lubricate properly. I believe what you hear is a crankshaft or rod bearing that is now damaged. If I'm correct, you need to replace the engine. Sorry for the bad news.

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I have a 2008 Jeep Wrangler Unlimited, and bought it new. I perform regular oil changes, and drive very little. A few months after the last oil change I noticed the oil light come on very briefly, then...


You probably spun a bearing. My wifes 2000 ford mustang did the same thing she never checked the oil and she said the oil light would come on briefly and oil empty filled back and knocking during acceleration and idle tore apart motor and there were three spun bearings.

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Knocking


the knocking is probably the connecting rod that is between the piston and the crankshaft....the pop you heard was it breaking. this is major engine repair and needs to be looked at by profesionals.

May 05, 2009 | 1997 Buick Park Avenue

1 Answer

SERVICE ENGINE SOON LIGHT/ POOR GAS MILAGE


knock sensor is located on the block usually under the intake. nissan has problems with these sensors. i have chaunged plenty of these on nissans in the past year. this has no affect on your gas mileage. this sensor picks up misfires on the engine. sometimes you might have rough idle and can't feel it in the drivers seat but the knock sensor can. i would suggest maybe a tune up spark plugs, air filter, fuel filter first before going to take apart a bunch of things to change a sensor. the sensor is designed to pick up any differences in motor quality and will throw the engine light on. sometimes the problem is the knock sensor, or there is an underlying cause that the knock sensor is reading.

Feb 17, 2009 | 2000 Nissan Frontier

1 Answer

Oil light goes on and off and engine has a knocking sound.


This sounds like severe engine damage, do to loss of internal lubrication (no oil). That's the bad thing about 'idiot' warning lights, they come on when u have a severe problem, and the damage is done. You are going to probably have to purchase a used engine from an auto salvage yard, or purchase a re -manufactured engine. Sorry for the bad news, this is about as bad as it gets.

Nov 14, 2008 | 2000 Isuzu Rodeo

2 Answers

Where is the knock sensor located?


the knock sensor is on the pass side of the motor slightly back from the oil filter on a stand off on the block. tricky to get to but you loose no coolant changing it.

Jul 20, 2008 | 1999 Kia Sportage

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