The oil pressure light flickers intermittently

Tiny
KELVINMEMEH
  • MEMBER
  • 2007 TOYOTA AVENSIS
  • 74,000 MILES
It is a 2007 T avensis automatic. I have noticed that the oil pressure ligt flickers intermittently. I have checked it with a mechanic who changed the oil, still not appearing.
I notice this happens mostly when I do a hard stoop or sharp maneuvers. What could be the problem? Why is this orange light blinking.
Tuesday, April 17th, 2012 AT 12:40 AM

5 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Could be sensor out of range or engine rpm to low or momentary oil slosh. What weight oil do you use?
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Tuesday, April 17th, 2012 AT 12:46 AM
Tiny
KELVINMEMEH
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  • 3 POSTS
Ok thats a problem. I know very little about cars. This is my first car as it is. I would appreciate you telling me how the weight of the oil would cause this, meanwhile I will get that the info on the weight of the oil from the mech tomorow morning.
Thanks for ur response
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Tuesday, April 17th, 2012 AT 12:51 AM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Weight of oil and type of oil determines viscosity. For example, gasoline has very low viscosity. It is viscosity that determines the ability to hold pressure in relationship to leakage or escape from confinement. Engine oil passage thru engine has a certain pressure based on these factors. Oil changes viscosity with heating. It is lowered. The ability of preventing metal to metal lubricated surfaces in the engine is a combination of viscosity and proper maintained clearances. Take cold oil on your dipstick and rub between your fingers. Then run motor till warm and do it again. Notice the difference in feel, the ability of the oil to prevent skin to skin contact under pressure.
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Tuesday, April 17th, 2012 AT 1:32 AM
Tiny
KELVINMEMEH
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  • 3 POSTS
Thanks.
So, have u dealt with similar complains in the past?Is this a common issue with the 1.8L vvt-i engines? And is there a particular oil weight u would recommend?
Thanks
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Tuesday, April 17th, 2012 AT 1:40 AM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Also there is a diff between flickering and blinking. Flickering is erratic while blinking is synchronous. Blink rate does not change.
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Tuesday, April 17th, 2012 AT 2:23 AM

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