If you checked it with a mechanical pump and that is the result, it sounds like a bad pump.

Answered by Jacobandnickolas (expert)
57,318 answers provided

but is a new pump that mean i have to get the new pump like

Response from kamonevong
2 questions asked

I would recommend checking the oil pump. That would be my first guess based on your description. Other than that, you could have a worn out engine (bearings) that could cause the pressure to be low or even the pick-up tube on the oil pump could be plugged.

Answered by Jacobandnickolas (expert)
57,318 answers provided

you mean take out the oil pump

Response from kamonevong
2 questions asked

If you have no pressure, you have to.

Answered by Jacobandnickolas (expert)
57,318 answers provided

if the oil pump bad what is a good brand to buy?

Response from kamonevong
2 questions asked

I always try to stay with OEM parts.

Answered by Jacobandnickolas (expert)
57,318 answers provided

I THINK J and N MEANT IN THE BEGINNING TO CHECK PRESSURE WITH A MECHANICAL GAUGE---SCREWED INTO THE HOLE THE SENDER IS IN NOW

(NOT CHECK IT WITH A "MECHANICAL PUMP" AS HE MISTAKENLY SAID)

I GOT MINE ON A PLASTIC TUBE----I CAN RUN IT UNDER THE HOOD OR THRU A HOLE IN MY FIREWALL

YOU CAN BUY A "UNDER DASH" UNIT AND USE IT TEMPORARY LIKE MINE----OR YOU COULD MOUNT IT PERMANENTLY (IF YOU GO THIS ROUTE--PICK OUT ONE YOU LIKE IT'S LOOKS!)

http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_style-line-mechanical-oil-pressure-gauge--white-dial-sunpro_9030005-p?searchTerm=oil+pressure+gauge

THE ONE ABOVE COMES W/ TUBINGMORE BELOW

http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/PartSearchCmd?storeId=10151&catalogId=10051&pageId=partTypeList&suggestion=&actionSrc=Form&langId=-1&searchTerm=oil+pressure+gauge&vehicleIdSearch=11140&searchedFrom=header

PIC OF MINE AT BOTTOM

YOUR TURN

THE MEDIC

Answered by CJ MEDEVAC (expert)
6,803 answers provided

yet that is i used screw in the oil sensor hold is read 60 psi from start and going down to 5 psi at idle about 10-15 min only when i raise up the rpm the pressure go down to 1 psi not up and stay there below 2 psi is look like a bad pump i just bought from the toyota dealer to replace it the old one

Response from kamonevong
2 questions asked

now i try 20/50 oil in the engine look like have pressure 50psi and eng warm up hold at 25 psi the car sound nice when i do the test drive i hear the like knocking but not lound and when slow down sound go away so do you thing is the main bearing need to replace

Response from kamonevong
2 questions asked