Oil Pump light flickering + rough idle on 1996 Nissan Maxima
After the car is warmed up and running for awhile, when I come to a stop the oil light flickers a little bit and it idles rough for a second or two. This only happens when the rpm's are low, around its idle at about 5 or 600 rpm when stopped in drive. It started out happening every now and again, but is happening with more frequency. Would it be important for me to get the oil pressure checked by a professional and possibly look into getting the oil pump replaced?
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if the oil is clean,meaning changed regularly,and is full and you have no engine noise while driving or at idle then you have a bad oil pressure switch that will need to be replaced.this is an electrical switch that uses oil pressure to push on the switch to turn off the light.sometimes they get tired and don`t work as intended.and usually fail at idle as there is not enough oil pressure to over come the defect of the switch to turn off the light.
there are many things that cause this, so it is best to have it scanned if light is on. but it may be a bad coolant tempurature sensor the symtoms are --- if it is bad it will run to rich, run rough at idle, and produce black smoke. engine may stall out. a maf sensor may cause this also. just get car scanned to find problem code. if it is white smoke check for oil in anti-freeze, if so it may be a blown head gasket. but if that is bad it will over heat. have a good day!!
I think you ought to change your oil, and when you do that, buy a can of Seafoam that can be found at your local auto store and dump it down the hole where the oil goes so it can get all in the crank case. If you see white smoke for a little bit dont freak out, its just carbon build up thats burning off. Also have your timing checked.