Question about 1994 Ford Crown Victoria

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Knocking noise from the bottom of the motor and low oil pressure

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Sounds like its about ready to throw a rod.....Might want to sell it before it quits

Posted on Sep 29, 2010

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When pressing on the gas, sometimes I hear a noise like a hot rod taking off. its not a knocking noise but more like a vroom vroom noise. I was told it was the bearings ing the motor.


could be oil pump its self,dode oil pressure go up when throttle is applied,or dose it have a seperate oil chain thats worn,all the best.

Nov 16, 2015 | Cars & Trucks

2 Answers

Low oil pressure and stop engine light after changing battery and alternator hear knocking now


I see more than one issue in your story. Its possible the computer lost memory and will need to relearn. But that would not explain the knocking noise. The oil pressure warning might explain the noise if oil pressure really is low. Running without the belt for even 5 min would not cause the problems you describe.
I would focus on the low oil pressure warning and the noise first.

Feb 02, 2014 | 1997 Cadillac DeVille

2 Answers

Motor sounds like a bunch of Indians trying to get out.


sounds to me like you could have damaged the oil pump, running low on oil can cause numerous things to fail.. possibly spun the rod bearings and they are beating on the crank. I wouldn't start it, but if the noise is in the bottom I would drop the oil pan.

Apr 03, 2013 | 1993 Ford Crown Victoria

1 Answer

2003 Taurus. Oil light came on. Checked level. Good. Drove another 5 miles, now have engine knock on top side of motor. Thought maybe oil pump malfunction. In the middle of nowhere, drove 50 miles home....


Before driving it anymore I would have someone test the actual oil pressure using a mechanical test gauge to see how much , or little, oil pressure you actually have. The knocking noise could be a hydraulic lifter that is partially collapsed due to low oil pressure or a rod bearing that has been damaged from low oil pressure. If it is just a lifter that is making noise then there's a pretty good chance that the lifter will quiet back down once the oil pressure is normal again. If it turns out that your oil pressure is normal both at an idle and at highway speeds then the noise may be unrelated. You can cause some serious damage by continuing to operate any engine that is low on oil pressure even if the dipstick shows it to be full of oil. Hope this helps and good luck!

May 10, 2011 | Ford Taurus Cars & Trucks

1 Answer

Low oil pressure at stop and knocking sound


First check the oil level and condition. Have your trucks oil pressure actually checked with a gage. It should be at least 42p.s.i. to 55p.s.i. The knocking noise is probably related to low oil pressure. Depending on the type of knock it could be crank shaft bearings, piston wrist pins, rod bearings, cam bearings or noisy lifters. All a result from low oil or pressure. 3 possible causes, are low oil level and pressure, lack of oil changes and viscosity of oil breaks down to where it can't lubricate or dissipate heat and coolant getting into oil, reduces pressure and prematurely wears down bearings. Have it properly diagnosed before you seize your engine solid.

Apr 06, 2011 | 1993 Chevrolet Suburban

1 Answer

Loud ticking noise


Ticking is generally associated with a valvetrain problem but may be caused by low oil level or pressure. Noise is in the upper half of the engine. Knocking is from low oil pressure and is caused by worn bearings causing pressure loss. Knocking is the worse of both conditions (means overhaul or engine replacement.) Ticking needs to be checked for it's cause...if cause is low oil pressure, remember...oil pumps don't cause low oil pressure, pressure will lost if bearings are worn or pump inlet screen is plugged with carbon.

Jul 18, 2009 | 1999 Jeep Cherokee

1 Answer

I have bmw 318I the oil indicator for motor appear when use break


The engine is low on oil. but assuming it is not.
The engine is either idling to low .
The engine oil pressure itself is low. The engine oil pressure switch is leaking or not reading the oil pressure in the car.
I assume there is not knocking noise from the engine.
I would check for any oil leaks on the engine .
IF there are no leaks , I would change the oil pressure sesnor or switch first .
This could lead into major engine work.

Good luck

Mar 30, 2009 | 2000 BMW 3 Series

1 Answer

Oil pressure drops once it gets warm


Sorry to say it sounds like the motor is gone. Higher oil pressure when the oil is cold is normal. But, when the engine gets to operating temp and the pressure bottoms out and the engine knocks you have big problems. If the mileage is very high (150,000) or more your bearings are so worn that the oil can't fill the void between the surfaces and thus the low oil pressure.

Feb 07, 2009 | 1999 GMC Suburban

1 Answer

1995 nissan quest minivan gxe v6 - noise under the hood


low or no oil pressure... check the level of the oil .. add if necessary and have the oil pressure checked

Robert

Jan 26, 2009 | 1995 Nissan Quest

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