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How to tell if oil pump is bad - 1999 Chevrolet Silverado 1500

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Oil pressure gauge.

Posted on May 23, 2014


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My daughter has 99 Buick lesabre how do you know if the oil pump is bad

Oil pressure test , remove the oil pressure sender an screw in a mechanical pressure gauge an test the actual pressure . Is the engine making any noise ? knocking , rattling etc... Oil light on ?

How To Check Oil Pressure EricTheCarGuy

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what is worries me is the fact that your oil level is over full. This is a sign that you are getting fluid into the oil system that you did not add, coupled with the fact that your car is overheating leads me to believe you might have a head gasket issue.

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Hi Rejean, I suggest you have the oil pressure sender unit inspected before thinking of replacing the oil pump. If it's the sender unit the job will be a fraction of the cost of an oil pump replacement, which means opening the engine. Regards John

Jun 22, 2014 | Cars & Trucks

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My low oil pressure light comes on at low idle on my 2005 Ford Freestyle. Could the switch be bad?

Yes the switch could be bad but the engine ciould also be low on oil or the oil pump could be going bad. The plan would be to check and top up the oil if necessary. If it still does it then have a mechanical oil pressure guage put in and get an acutual reading. This will tell you if it's the switch or the oil pump.

Oct 24, 2013 | 2005 Ford Freestyle

1 Answer

How can I tell when my oil pump is bad?

Low oil pressure is the clue to a bad oil pump, but rarely is the pump the issue. Loose engine clearances, foreign material in the oil bypass valve are common issues.

Measure the oil pressure with an external gauge and proceed from there.

Aug 29, 2012 | Cars & Trucks

1 Answer

Truck has no power to fuel pump relay ,gauges are not working and fuel pump is not working

So If you jumped the two wires at Oil pres. switch and pump came on, then that tells me your oil press. switch is bad...change sending unit.

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Oil light comes on at low speeds , changed and checked oil all good?

Depends it could be telling you that you have low oil pressure. Which would mean the oil pump is going bad or it could just be the oil pressure sending unit going bad.

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Oil light keeps coming on

1992 ford explorer with the oil light coming on, this can be due to a bad switch, this switch is called the oil pressure switch and is located near the oil filter area, this would be the cheapest way to go first and if the light still comes on then you will need to have a pressure gauge hooked to where the switch goes and the gauge will tell you if its really low on oil pressure and if it is then this may be due to worn engine bearings or weak oil pump, i will tell you i have not seen an explorer with low oil pressure just needing a oil pump, most of the time it is time for another engine. what =i have seen is alot of them with bad oil pressure switches that were making the oil light come on . hope this is helpful, good luck.

Mar 19, 2011 | 1992 Ford Explorer

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have a 2000 jeep grand cherokee with 84,000 miles. started having issues with oil pressure gauge going crazy up and down, beeping. had oil pump replaced per mechanics recommendation. didn't help won't hold pressure---only registers about 2. now they tell me i need a new motor!!! just bought vehicle less than 1 yr ago...had carfax clean report!!!!any suggestions?

Apr 17, 2009 | 2002 Jeep Grand Cherokee

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