Chrysler Repair: 97 LHS 3.5l flickering oil light, oil contamination, oil sending unit

Question
QUESTION: hey kevin,  thank you guys for devoting time to do this.. I am trying to figure out what the minimum oil pressure specification is for this 97 LHS 3.5l there is some oil leaking from the sendng unit but no SES light.. just would like to be sure that its not and oil pump... thanks again

ANSWER: Hi Chico,
Minimum pressure is 5 psi at idle and 25 psi at 3,000 rpm. To measure it you need to remove the sender and attach a gauge. If the sender unit is OK, and the pressure is OK but the light still flickers at idle it probably means the pressure is a bit marginal due to engine wear, and the way to reduce/eliminate the flicker is to increase the 'weight' of the oil one step which will raise the pressure enough to keep the warning light from flickering.
Roland
PS Sorry for the delay but I just found your question in the pool to which Kevin had referred it. Please 'rate' my answer. Thank you

---------- FOLLOW-UP ----------

QUESTION: Hey Roland/Kevin, i noticed Chrysler makes an updated part for the oil sending unit electrical connector..... is it a vent to let out oil?... can i just take out the rubber grommet out of the otherside of the electrical connector and let it vent that way?  And I'm guessing that the sensor operates by, when the oil pressure reaches minimum, the sensor grounds internally and turns on the dash light? could the oil contamination short out the sensor intermittently? Just do not want to have to put a sensor on if it can leak and still be good.. Greatly appreciative, chico

Answer
Hi Chico,
Unfortunately I am not aware of the updated part. You are correct about the electrical function of the sender.
The 'vent' of the sensor is something that I haven't heard about nor why it would be necessary. I doubt that oil contamination would short out the sensor but if the port got clogged up with crud I can see how it might underestimate the pressure so you could remove it and see that it isn't clogged up.
My experience though is that with wear on the bearings the oil pressure at idle may be low enough to turn on the light (thought likely still more than 5 psi) such as to flicker. And an easy way to prevent that is to use one step heavier oil the next time you change it. So long as it goes off when you accelerate above idle I wouldn't worry about it.
Roland
PS Thanks for your ealier 'rating'.