Question about 2004 Ford Taurus

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Low oil pressure

Started with a knocking noise and low oil pressure light going on, then knocking stopped within a few minutes. Low oil pressure light resumed and other lights came on in the dash, followed by losing all power, acceleration, pulled to side of road. Waited a few minutes, started again. Continued drive home about 6 city blocks with low oil pressure light on and lost power again. Towed to be serviced and told, not alternator, it was the engine, and registered as no oil, had oil we checked before tow. Mechanic put 5 quarts of oil in it,no apparent leaks. Car started smoking real bad, had not done so before. Had to give it a jump and said could be seals, not sure but problem with engine. Been sitting for 3 days, started right up and so did the low oil pressure light. Should I have someone check to see if oil sending unit, or check oil pressure? Do you think engine has to be rebuilt?This car has around 82,000 miles and babied.

Posted by Anonymous on

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  • Expert
  • 175 Answers

If you ran out of oil and you now can hear knocking sound comming from the engine then it time to get it checked by a mechanic

Posted on Mar 10, 2017

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

warlock61
  • 659 Answers

SOURCE: No Oil Pressure

did you check the synchronizer assy? It is the piece with the cam sensor on top in place of the distributor. These have a tendency of breaking. It also drives the oil pump.

Posted on Jan 17, 2009

  • 152 Answers

SOURCE: 1994 Ford Taurus 3.0 Oil Light and pressure

Yes, the oil pump is accessible when the oil pan is removed and at those miles it would be a good preventive maintenance idea to replace the oil pump.

Secondly, you should shop around for a better price. $332.00 seems a little high.

With an oil pump replacement, the pan gasket and the oil change should be included in the price, seeing as how those items are removed anyway.

As with any auto repair, its buyer beware. the crooks count on the fact that you don't know what is involved with the repair, or else you would have done it yourself.

Good luck
Aduz

Posted on Mar 26, 2009

czaa
  • 4514 Answers

SOURCE: 2007 Ford expedition won't start

ur oil pump may be failin-there r sensors everywhere on new cars-keepin u from starting as safety measure-computer systems r complex n things dont always show on 1 scan-they kinda hav the mindset of a pc

Posted on Sep 15, 2009

Testimonial: "Thank you. I have spoken with 2 other mechanics who said the same thing regarding the oil pump. It's being looked at. So I'll post more once I know"

  • 4369 Answers

SOURCE: how do i replace oil pump on 2002 ranger 4 x 4

engine size?

4.0L

Removal and Installation

  1. Raise and support the vehicle. For additional information, refer to Section 100-02 .
  1. Drain the engine oil.
  1. Remove the bolts and the oil pan.
  1. NOTE: All sealing surfaces must be cleaned prior to assembly. Use metal surface cleaner to clean the sealing surfaces.
    NOTE: Inspect integral oil pan gasket for cuts or damage that may cause leaks. Install a new gasket if necessary.
    NOTE: Fill the engine with clean engine oil.
    To install, reverse the removal procedure.

Posted on May 08, 2010

cansmo
  • 2431 Answers

SOURCE: 1995 Ford Windstar Engine Knocking

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

Posted on Apr 21, 2011

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ALTHOUGH MY DIPSTICK READS FINE, WHENEVER I PUSH ON THE BRAKES, MY OIL PRESSURE GOES DOWN TO 0 AND MY CHECK GAUSES LIGHT COMES ON


I would say that you are definitely low on oil pressure. The oil pump is usually located inside of the oil pan. Depending on what vehicle you have you might have to have the engine removed to access the oil pan to get to the oil pump. I know on a Cadillac Northstar engine you get 43 hours to do an oil pump.

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1 Answer

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take it to an accredited service shop that has experience on your make of engine and have a proper diagnosis done and quote
it is possible that there is a spinning main bearing and the test is a oil pressure test using a mechanical gauge
some times it spins , low oil pressure -knocking other times it stops and the oil pressure goes back up , knocking stops
should I be correct , normally it can be repaired in car by removing the sump and replacing that bearing shell, of the shaft is not damaged
i would steer away from a new engine or suggestions of a blown engine but it could be serious

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2 Answers

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Check the oil pressure manually with a gauge. Make sure you have oil pressure. Perhaps you need a new oil pump, or new lifters. Get a professional opinion from a non interested party. Save money, get a diagnosis.

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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.

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1 Answer

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Its time for another car Jerry.
The oil pressure light was telling you the engine was running on less than 10 psi of oil pressure, and the knock was a rod or main bearing.
Now that the engine has been run low on oil pressure for some time, one of the rod or main bearings is junk, and so is the engine.
By the time you replace the engine, even with a used one, you could take the same money and buy another car. Even if you took the engine apart and fixed the bad bearings, the rest of the engine parts are very weak from running without oil.

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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

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1 Answer

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Oil pressure in my 1989 dodge truck is slow to raise when started may take 2-3 minutes to register at all then goes to normal range. Also goes very low when setting at a stop light or stop sign. Much lower...


best bet is to change that oil sending unit. they get gummed up at times. i almost junked a 318 one time cause of really low pressure, it was just the sending unit. also check the wire clip on it. may not be making good contact.

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1 Answer

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how much oil is left in the engine ?
the smoke was probaly oil burning,the knocking could be from low oil pressure,this could be very bad.check the oil and coolant levels and repost and let me know how they are.if any oil shows on the dipstick smell it and see if it smells burnt.

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1 Answer

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