Question about 2004 Dodge Ram 1500

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Engine shows low oil pressure and engine make a knocking noise.

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Check your oil, that really sounds like the engine is getting ready to blow up.

Posted on Aug 05, 2010

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How do you change oil pump in 89 gmc 4.3 v6 s15 jimmy


I'm going to simply "spitball" an answer because i don't know WHY you think you need to change the oil pump.

1st, IF the oil pressure gauge isn't showing any pressure, or low pressure, AND there is no engine noises such as knocking or loud tapping, I would suspect a faulty oil pressure sending unit. IF there's a deep knocking sound then an oil pump isn't going to solve the problem. That is UNLESS it turns out to be what I ran across on a 1991 S10 4x4 with a 4.3. There was a "knocking" sound which I traced to the cover plate of the flywheel/flexplate. Turned out to have a cracked flexplate. Changed it and all was good.

I have a 1985 GMC that showed low oil pressure, yet there was no noises coming from the engine to confirm low oil pressure. I changed the pressure sending unit and it fixed the problem of "low oil pressure".

Now IF you're dead set on changing the oil pump, get ready because it isn't a 10 minute job.

You'll more than likely have to at LEAST raise the engine somewhat as (I'm guessing it's 4x4) the oil pan has a deep sump area for the oil pick up. This is so the oil pan can be shallow in the front area to clear the front differential and cross frame area.

Then you get to try to wiggle, twist, wiggle some more, the oil pan out from between the bottom of the engine/crankshaft, and the cross member of the frame AFTER removing all of the bolts that hold the oil pan in place.

IF it were me, I'd be almost inclined to simply pull the engine, at least part way out of the truck, to gain better access to the pan. AND you wouldn't be fighting trying to keep the oil pan gasket in place while doing the wiggle/twist putting the pan back into place.

Hope this helps.

Feb 19, 2015 | 1989 GMC S-15 Jimmy

1 Answer

On a hyundai tiburon how do i know if the oil pressure is bad


If you have low oil pressure you should have a waring light or message, the engine will become noisy and if it is not repaired very soon you will here first a loud tapping noise then a loud knocking deep in the engine, and finally the engine will worst case blow up and parts may come out the bottom through the oil pan. Never drive any car that shows a low oil pressure warning light or message, stop the engine right away and have it checked by a shop.

Feb 13, 2012 | 2003 Hyundai Tiburon

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

1995 Ford Windstar Engine Knocking at startup. Driven 2800 miles since last oil/filter change. Oil level SAT, Coolant level SAT and no visible leakage. Engine completely rebuilt 2 years ago. Engine has...


No if the oil light has flickered you have oil pressure loss some time just belive the sensor do help us out. lifter do not cause oil pressure loss pressure is built in the rotation of the crankshaft. The knock under the plenum will point you to that cylinder that is affected, (main bearing) as for a 1995 the injectors can only cause a misfire but no knocking noise,will they honor the warranty

Apr 21, 2011 | 1995 Ford Windstar

1 Answer

KNOCKING ENGINE


Hi. There are two main issues that will cause the engine to knock. The first will be the oil pump. If the oil pump is failing, or damaged, this will produce a low oil pressure state. Low oil pressure will cause the internals to not receive the necessary lubrication needed for optimal performance. This low pressure state will cause the rod bearings to ware, thus, producing this knocking noise. This will be accompanied by a low pressure, or illuminated oil light. The next issue will be worn, or damaged rod bearings. These vital bearings can fail if the bearing clearance is excessive, or worn. They will, also, fail if the oil supply is not sufficient. This inspection will require you to drain all oil and coolant, and the dropping of the oil pan, to expose these bearings.Worn, or excessive bearing clearances will cause a knock.

NOTE_ There is another issue that i should warn of. If There is sufficient sludge build up in this engine, due to not changing the oil regularly, or not administering scheduled engine flushing, this will cause the internal oil ports to clog up, thus, inducing poor oil circulation. This will damage the entire engine. If you have not had this engine flushed, i would recommend to schedule this , asap.

Dec 08, 2009 | 1996 Ford Explorer

1 Answer

No oil pressure on my 03 crown victoria


KNOCKING NOISE IS NOT A GOOD SIGN.SOUND IF YOUR ENGINE OIL LEVEL IS CORRECT NOT LOW. SOUND LIKE OIL PUMP AND MAIN BEARING FAILURE.YOU NEED A REBUILT ENGINE OR OVER HAUL.

Oct 18, 2009 | 2003 Ford Crown Victoria

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

Low oil pressure and engine noise


you need to get your viles checked that is the promblem..you may have a rod knocking as well

Dec 07, 2008 | 1991 GMC C1500

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