Question about Volvo S80

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My oil sensor light comes on and reads no oil pressurse sto engine, but it only comes on when idiling it goes off after i accelerate, there is oil and no leaks.engine runs normal with no change in sound

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Aftermarket oil filters will do this. Causing a lack of oil pressure when idleing and starting. Replace your oil filter with one from Volvo ALWAYS!!

Posted on Nov 08, 2010

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Posted on Jan 02, 2017

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Why are so many trouble diagnostic codes being thrown


sounds like you speed sensor and your throttle poistion sensor

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After driving my car 2006 chevy impala for about 20 miles the dashboard warning light oil pressure low stop engine and the oil warning light appears, but if step on break or slow down it goes out..wha


Verify that the engine has the proper amount of oil. The inertia from accelerating may be moving the oil in the oil pan away from the sensor and causing it to send a signal, then when you slow the oil levels out and the sensor go's off. I've had this happen alot with a taurus that I owned. The simple solution was to top off the oil to the correct level and the sensor did not come on again (until it ran low again, had a leaky oil plug on oil pan).

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2001 F150 pressure gauge reads zero and light comes on when slowing down to 1st gear and stopped, sometimes light and gauge goes off and pressure returns, but fluctuates...also when gas applied and vehicle...


I assume you mean "Oil" pressure...This is the first sign of the main bearings getting to the point of needing replacement. The fact that the pressure goes up when you accelerate tells me that the oil pump is working. There is just too much bearing clearance for the oil pump to keep enough volume flowing at idle to maintain pressure. In short, it's time for an overhaul. It will be less expensive if you do it now than if you wait until you spin a bearing and destroy a crankshaft, or put a rod through the side of the engine block.

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1 Answer

Oil light comes on when idiling and turns off when accelerating oil is full


Its quite possible that it could be a dirty oil filter.I would try an oil and filter change and see if that helps you with your situation.

Feb 07, 2011 | 2002 Jeep Liberty

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After 20-30 min. driving oil light comes on when stopped. oil light goes back off when moving again.


There is less oil distributed to the engine in idle position than when you drive. So when the oil light comes on, you may have to put a little oil in your car. While driving, the oil reading may be enough for your sensors in your car to not send a signal, but when you stop and the oil pressure goes down, it may not be enough and that's when the light comes on. When you drive 20 to 30 minutes, your oil gets thinner because it is warm. That also will send a different reading to the sensors. You may want to try a thicker oil (instead of 10/40 try 5/20 ... ask before you do this!).

Dec 30, 2010 | 2000 Ford Taurus

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Oil pressure gauge goes to 0 when idled, but goes


You could try thicker oil or stop using synthetic or add some lucas oil treatment or change the oil. The sender could be bad too. A diag is in order because if there is no presure the engine will soon die.

Dec 09, 2009 | Oldsmobile Bravada Cars & Trucks

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My 2006 mitsubishi colt check engine light comes on and the accelerator pedal is giving no power and the car limps when this happens, then the car goes fine again?


There are many emission sensors in the car that will make the engine light come ON. Not to mention the big list of trouble codes for the engine light. The engine light code will give you a big clue of what's causing the accelerator pedal problem.


Best way to find out what's going on engine light is to have an auto-parts store hook up a engine code reader and tell you what the code means and the problem. Most auto-part store will do this for free.

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Check gauges and Check Engine Lights


The sending unit for the oil guage will cause the oil guage to fluctuate this is caused from some sludge build up that is more than likely stuck in the sending unit tube. Use Gunk motor flush on your next oil change this should help the oil guage problem.( make sure you read the direction on the back of the bottle)
As for the check engine light you can take it to Auto Zone and have them scan the computer. Sometimes the EGR valve will build up with carbon causing the valve to stick slightly open which will make the idle on the car fluctuate up and down. Its also possible you need O2 sensors.

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