Question about Cars & Trucks
My oil pressure keeps going to low especially when i depress the brake . when the truck is driving at about 40mph the gauge goes back to normal but brake again and it will drop i put on new oil pump new sending unit new lifters and problem still remains despite all of this action my engine throttle normally and dont seem to loose no power . there is oil in the engine and the truck is still running dont know what may happen further but that is my only way of transportation to work i really need some help here thanks
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Posted on Jan 02, 2017
SOURCE: flashig oil light
You either have a loose/worn engine bearing or a worn out oil pump, do not drive the car this way, you will cause serious damage to the whole engine. A oil switch is for a light, it turns on the light when oil pressure falls below about 10 PSI, a sending unit is for a guage that shows oil pressure with a scale, it may have numbers on the guage or just green and red, or high and low.
Posted on Oct 10, 2008
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
if the gauge starts a 0 - goes to 1/2 , than full - sounds like gauge is OK - seems to me like the sending unit is bad - you could try removing the sender and trying to clean out the port with "brake clean", letting it dry than re-installing it. the pressure switch is still the least expensive place to start
Posted on Oct 27, 2009
Make sure the oil level is correct. If the engine bearings are getting worn, the oil pump is worn or it's screen plugged, that can cause low-RPM weak oil pressure. Try running with 'high mileage' oil at your next oil change and always replace the filter. At some point, you may need to consider overhauling or replacing the engine. Good luck!
Posted on Jun 06, 2010
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