1991 Loyale oil pressure guage reading

[rickyhils]

I JUST FOUND THE INFO AT THE ALLDATA SITE . NO NEED TO RESPOND TO THIS TOPIC.

I have 1991 Loyale. Wagon  5spd FWD SPFI. Non-turbo. Am looking to test electrical reading from oil send switch at oil pump. Wire contact is at the larger switch that sticks out from the pump via a short tube. All-Data doesn't say what the ohm range should be coming out of that wire. Also there is an unused electrical tab right after where the oil filter attaches. Not sure what that might have been for. Am also looking for the expected voltage range going into the dash board oil pres gauge.   I have learned enough here to not go off expecting to accomplish miracles with keeping this engine alive a whole lot longer. But I can still use 10w-30 in it so it has some time left on it. Has more than 275k mi on this engine. Runs ok. Has normal "TOD" tick-tick that comes and goes. Maybe it will go to 300k- 350k- or more before low oil pressure/bad rings get the best of it.    THANKS You Guys for any info on those gauge readings.

Edited September 6, 2019 by rickyhils
Answer found at ALLDATA

[GeneralDisorder]

It's pretty much irrelevant. Test the pressure with a mechanical gauge if you are curious about it. If you're relying on the factory trim package (aka "gauge") for your pressure readings, they are immediately suspect, especially if the motor isn't in any obvious low oil pressure distress. Otherwise - virtually all modern engines have no "trim package" that indicates "oil pressure"..... and what are you going to do about it if it's "low" anyway? You can't do anything - you can't buy a pump (not that is likely to solve the increased clearances that create "pressure", since the pump only creates volume), you can't rebuild the block economically..... it's a waste of effort. Check it with a gauge - not that it will tell you anything useful or more accurately - it won't give you any *actionable* information. So why waste the effort?

GD

[rickyhils]

GD. Your reply is most wise. Thanks.