Could be a few things. But first and fore most, check your oil level right away. On to problems, it could be the oil pump is getting worn out and cant keep pressure up at low idle. If car is worn and tired, the oil itself can be a problem. If the oil is to thin, the large clearences in parts from age will not have enough back pressure to keep oil pressure up. Is the idle set to low for the car? Maybe someone tampered with your idle speed and now the pump cant create enough pressure. How about the right oil filter? Either way something needs to be done to correct the problem before there is no correcting the problem.Why does my oil light come on everytime my car comes to a complete stop?
Maybe low on oil. Engine getting old not producing enough oil pressure at low rpm. A short in oil pressure switch. Severe oil leak some where. Lets hope its the first choice.
You are low on oil. Add oil. When you stop all the oil travels to the front of the pan away from the low oil sensor. This triggers the light. Check your oil may need a half a quart to a quart of oil.
may be the place you had your oil changed forgot to tighten the oil filter or the drain bolt or not enough oil
Check your oil level RIGHT NOW!
If that isn't it, we'll figure out something else, but in the meantime, take it back to them ASAP.
If you check the oil and there is none, DO NOT DRIVE IT! Have it towed to their shop!
This is quite common and usually is not a problem. There is a minimum oil pressure requirement for an engine at idle speed (4 pounds per square inch). There is an oil pressure sensor near the oil filter which is supposed to alarm at about that level or less but it can be inaccurate. So one possible service would be to verify exactly what is the oil pressure when the sensor is alarming, using a calibrated pressure gauge substituted for the sensor. If it is alarming at too high a pressure setting, then replacing the sensor is the solution to put your mind and ears at ease.
The other possibility is that the pressure is indeed at or below 4 psi at idle when the engine is warmed up. If that were the case, the easiest fix for that is to change the engine oil and substitute the next higher ';weight'; of oil. If you have had 5W-30, use 10W-30 instead, if 10W-30 then 20W-40 etc. The higher the number the higher will be the pressure at idle, so chances are this will solve the problem equally well.
I don't think the pump is likely the problem, but if you would like to know that also get the pressure measurement at 3000 rpm which should be 25-80 psi. If it is in that range then you will have no concern about the pump or the oil system.
I would begin with the oil change with substituting the next higher weight of oil. In wintertime you may want to drop down to the present weight for ease of engine cranking, and because the oil will not be so hot (thin) as now the problem will likely not resurface.
Only one caveat here, you did check the oil level on the dipstick, but also observe whether it is cloudy or foamy which would indicate that there is also engine coolant in the oil (which would cause reduced pressure readings) and that would require immediate attention because of potential damage. But if the oil is normal-looking that can be put away as an issue.
No comments:
Post a Comment