the ac slows the engine, the lower idle causes the lower oil pressure
Correct. The oil pressure does fluctuate throughout the RPM range.
Hopefully (for you) just a bad oil pressure sending unit Install a manual gauge to actually check the vehicle's oil pressure
For the operator to monitor the oil pressure of the engine. If the oil pressure drops below average when running, the engine is in trouble.
Need oil change or oil pump weak or oil pressure sending unit not reading properly.
Your oil pump is probably finished. If you have recently changed the oil, it's definitely finished. Oil becomes less viscous when it heats up and your oil pressure drops because the pump can no longer regulate the pressure.
the oil pressure drops when i turn on the a/c is this because of a bad oil sending unit?
the oil pressure drops when i turn on the a/c is this because of a bad oil sending unit?
IF you are asking if the vehicle has a safety feature that shuts down the car if the oil pressure drops, the answer is no.
An oil pressure switch works by detecting the pressure of the oil in the car and alerting you to any problems. Oil pressure naturally increases when a car is running, but if the pressure gets too high or drops, it can create numerous problems.
No, a defective oil pressure sensor will not harm the engine as long as the oil pressure is what it should be. However, how do you know what the pressure is if the sensor is bad. Replace the sensor so that you can receive a warning if the oil pressure drops below what is optimum.
replace the oil pump or the engine could blow
1. low oil 2. probably have a electronic oil pressure sensor, senor can fail. mechanical gauges have a oil line running to the back of the gauge and don't fail unless the oil line is cut, and that would leak lots of oil fast, running your engine out of oil. 3. short in wireing