Oil level at max on dipstick,oil light goes out when driving but comes on when braking & ticking over in traffic
The fault is indicating low oil pressure, when the engine revs are low the oil pressure drops, first thing to do is change the oil pressure switch (cheapest option), see if that cures the fault. If not have the oil pressure checked, if the fault is the oil pump, then it could cause serious engine damage. Needs to be check out as soon as possible. Good Luck
SOURCE: diesel engine oil pressure 06 powerstroke 6.0
replace your oil pressure sensor and have a mechanic do a oil pressure test.
SOURCE: The oil pressure light if turnning on and off at low idle.
Please ignore this light. Or you can take your car for a scan so it could be fitted well to give accurate indications.
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SOURCE: Oil Pressure light stays on. Oil reservoir is
It occurred to me that you may find it by unplugging wires on the few items under the hood which may appear they could be the oil pressure sending unit.
The light should go out when the wire is unplugged, and if it does it is bad. That's your continuity test.
If you unplug the oil pressure sending unit and the light does not go out, the cause of the oil light staying on is something other than the oil pressure sending unit.
RE pete cass posting: I believe that if the sensor is diconnnected, the oil pressure light will not light (at least because of the oil pressure sensor switch being disconnected) -- the symptom here is the light won't go off. The switch is closed with oil pressure below 10-15 PSI and open above that oil pressure -- this is a normally closed switch.
SOURCE: oil light comes on at idle, goes off when driving, oil level full
change oil pressure switch it' should be near the oil filter
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