I find it hard to tell the location of switch with picture so close .May be a picture a bit back would help ? Some other members might be able to recognise better than me though .
This is the back of the motor, with the air cleaner showing on the left, the heater core box showing on the right, and the throttle/cruise control linkages at the bottom. I can get a wider view if still needed.
Oddly enough, I bought a replacement oil pressure sender, but got confusing info on the location, so it's still sitting around. Based on the poor info I found, this seems like what it should be. When I have a chance I'll pull that whatever out and compare it to the sender I purchased, see what I got. I think it might be bad, anyway.
If that's a Modified, I thought the oil pressure switch was below the head on the drivers side near the front, similarly placed as the Windsor. Coolant temp?
Coolant temp is on the thermostat housing. And I thought the oil pressure sender was on the side, too, until I saw this little guy on top. I haven't seen anything connected to the sides.
Ok, so given that this is the oil pressure sender, does it connect to the "ENGINE" light in the dash? Also, would I be able to use a standard replacement to connect it to a gauge, or would I have to look for a particular kind in order to utilize an oil pressure gauge?
I would look for an after market with it's own sensor. Usually back then, if you only have a light, it is probably just a switch. Having 2 independent indicators will provide greater reliability.
So, that would require an additional sensor to be installed, but I'm sure where else to install one on this motor. Is there some reference material that clearly shows a good spot? I've tried searching, but nothing I found was particularly useful.
Use something like this below. Screw threaded end in the current location and you'll have two outputs. One for your stock sending unit and a second for whatever you wish to use.
So, the "ENGINE" light is typically on rather dim while the engine is running. At least it is now, after replacing all the burned out indicator lights in the dash. I figured maybe the switch had gone bad, so replacing it would help. Well, new oil pressure switch installed, light still dimly lit. Any ideas why that would happen? Best I can tell, that idiot light is tied into the oil pressure switch and a coolant temperature switch, but for the life of me, I see no coolant temperature switches/sensors anywhere with the exception of a vacuum switch mounted into the thermostat housing.
If you were down-under in Oz I would suggest this HPR 40 25W-70 (Mineral) but we have much warmer climes and generally much higher ambient temperatures here that exaggerate the issues of using lighter synthetic blends in older cars designed for heavier oils and older engine where wear will drop oil pressures.
Well, I picked up some 20w50 and zinc additive. But have to wait for the weather to improve before trying anything. Too cold, windy, and rainy right now.
Time to check the oil pressure with something like this: Oil Pressure Tester Gauge Engine Diagnostic Test Kit Adapters Case 0-100psi But first check the warning light is to specs (volts, amps and watts) and you don't have a sender unit meant for an oil pressure gauge rather than a warning light installed.
Edit: Ok checking your earlier post that is a warning light switch so just check you have the right switch (and globe) specified for that engine, year and vehicle.
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