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Oil pressure dropped to o Rev it up oil pressure goes up .let off throttle oil pressure drops back t o. All so had light knoc.

Posted by Anonymous on

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  • Cars & Trucks Master
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Crankshaft bearings, as these bearings ware the gap increases and your oil pressure drops.

Posted on Apr 18, 2015

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  • Cars & Trucks Master
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Hi,it sounds from what you are saying that you have a isue with the oil pump,and the noking could be where the oil pressure is down so oil is not lubricating the bearings,to run it in this state could couse intunal damidge to the engine,you need to get this checked out.
all the best.

Posted on Apr 18, 2015

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Posted on Jan 02, 2017

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SOURCE: oil pressure drops at idle

oil pump is going bad or there is problem with oil pressure witch have it check out because if oil pressure is low it can cause serious engine damage. Have it check out soon hope this help

Posted on Dec 18, 2008

bunnydawg
  • 5158 Answers

SOURCE: 97 wrangler oil pressure drops when engine is at idle

check the engine oil level... you could possibly need to replace the oil pump soon... if you do not live in a cold climate i would consider using 30 or 50 weight oil. do NOT use that in a cold climate as the oil is like molasses when it gets cold.
that's only temporary. one other thing to consider is a clogged oil filter... when was the last time it was changed ?

Robert

Posted on Dec 18, 2008

  • 90 Answers

SOURCE: oil pressure guage dropping

Sounds like the sensor is failing.Have oil pressure checked with a mechanical gage to confirm. A new sensor or wiring repair is allot cheaper then a new engine!!

Posted on Feb 01, 2009

  • 13 Answers

SOURCE: 1999 Chevy Blazer - idle fluctuates

oil pump might be going bad

Posted on Aug 03, 2009

  • 1348 Answers

SOURCE: 2001 dodge ram 2500 v10 oil pressure drops to 0 then back up

you need to put an oil pressure gauge on it and see what happens.what you will find is that the sender unit is no good.

Posted on May 18, 2010

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1 Answer

Oil pressure drops to 0 then goes back up


Definitely needs resolving.
Since both light and guage drop occur, problem would appear to be with oil pump or oil delivery rather than simply a bad guage.
You could check to see if there is a common sender that may be defective.
It is also possible that the oil pump pickup screen has an obstruction.
I'd be looking at the recent history.
Has ANYTHING been done to the vehicle that might lead to this problem
Make, model, milage, maintenance history..........
All will help to track down the problem.

Jan 07, 2016 | Cars & Trucks

1 Answer

Power steering hi i have a saab 95 year 1999 when turning all the steering till the end the rpms drop and oil light turns on. either engine oil and steerng are at level. while driving nothing happens, and...


Possible fault areas; oil pressure sender not accurate,
low oil pump pressure output,
RPM dropping below 300rpm under load,
computer not compensating fast enough,
dirty throttle body,
oil viscosity too thin,
I would probably start with an oil change going with a thicker grade especially if you have high mileage.

Feb 15, 2014 | Cars & Trucks

1 Answer

1989 F150 351 oil pressure guage starting dropping to 0 suddenly and engine light comes one. When I rev the engine it goes back to normal but a soon as the rpms drop the needle goes all the way to the left...


Hi:
Usually your oil light doesnt come on unless you have less than 10 lbs of oil pressure. You either have a bad oil pressure sending unit, or your engines oil pump is bad. The only way to verify your engines oil pressure is to buy a direct reading pressure guage and install it on your truck, or have a mechanic check your engine oil pressure. Eitherway, you need to do something soon, because the long term effects of running with low oil pressure will ruin your truck engine.

Jan 25, 2010 | 1989 Ford F 150

2 Answers

Oil pressure drops at idle


If there is no engine noise associated with this ow oil press reading then replace the oil pressure sending unit on the engine, it is defective, this is common on all cars.

Dec 18, 2008 | 2002 Jeep Liberty

1 Answer

97 wrangler oil pressure drops when engine is at idle


check the engine oil level... you could possibly need to replace the oil pump soon... if you do not live in a cold climate i would consider using 30 or 50 weight oil. do NOT use that in a cold climate as the oil is like molasses when it gets cold.
that's only temporary. one other thing to consider is a clogged oil filter... when was the last time it was changed ?

Robert

Dec 17, 2008 | 2002 Jeep Liberty

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