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Low oil pressure and engine light flashing

26K views 17 replies 8 participants last post by  RaZX6R 
#1 ·
after i drove about 20 miles on the hwy this morning i noticed my oilk pressure was at 20 instead of the normal 40 when idle. it went back to 40 driving normal in the city but every time i was at idle it stayed at 20. No error codes came up but when i revved the engine to 4000 rpms the engine light started flashing but when it went back to 40 the engine light stopped flashing and the pressure stayed at 40 this time. anybody have this same problem? and should i just get it looked at ? BTW it was extremely humid this morning would it be a possible sensor malfunction?

input plz!:confused:
 
#5 ·
Im wondering if this has to do with the weather messin with the sensors.... its been real cold in ny and all this crap started happening when it got real humid. Im gonna look into the misfire and see whats going on with the oil pump and chirp in later... thanx though
 
#13 ·
Went to pep boys today they still had no clue what that sensor is but both autozone and pepboys had the pump sender which was like 110$ maybe im mixing up the nameS?
 
#16 ·
Oil pressure sender on my old 4.0L zj was right around where the oil filter was, in fact I broke it once replacing the filter. The exact wording is "oil pressure switch" on rockauto.com, the BWD model is $43 at oriellys, $25 if you order online at rockauto.
 
#18 ·
Very good info!! I just had to replace my oil sensor...takes about 15 minutes.... but you need a 1 1/16 socket to get it out.... still a little weary on if that was the problem though.... How do you know if your oil pump is starting to fail?? would the gauge still act all eradic?? so far since changing the sensor I havent had any more problems with it.. there's no knocking or noises coming from the motor... but I havent had the opportunity to take it on a long ride yet...
 
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