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View Full Version : Oil Temperature Sensor Issues with Aviaid Pan



BrewCityCobra
09-15-2025, 08:38 AM
So I am running a 427W with an Aviaid oil pan. As part of my build, I replaced the clock with an oil temperature gauge and ultimately installed the sensor for that gauge in the boss provided in the pan (e.g., in the front driver corner).

I've been driving with that setup for a few days and have been getting some strange readings that I'm not sure if I should attribute to the sensor, pan layout, or the engine performance. My guess is the pan, but I wanted to see what the board thought/experienced

What is happening is I'll drive the car for some time and the gauge more-or-less remains pinned at "LOW" (e.g., 140 degrees). I will see some movement but not much over my 15 minute drive to work - maybe rise to 160 degrees or so but not much more. At first, I thought this was likely just a result of the oil taking longer to warm up than the water (which would reach operating temp well before I got to work), and me just taking the temp from the pan and that larger volume needing to warm up.

What changed this thought was that yesterday I had an issue with the cooling fan (the relay crapped out on me and needed to be replaced) so after getting home I turned the car off, messed with the relays for a bit, and then turned the ignition back on (without starting the engine) to test if the fan was now working. To my surprise, the oil temperature now read significantly higher than it did when I arrived (upwards of 180-200 degrees if I recall correctly). This made me think that the baffle layout of the pan may somehow be limiting the flow of oil to the temperature sensor and that is why the sensor stays so low when the car is running.

Anyways, I wanted to check with the board to see if 1) this was normal behavior, and 2) if not is there any easy fixes I should be looking into.

rich grsc
09-15-2025, 10:28 AM
Normal. The oil heat soaked because the car wasn't moving, circulating air around the pan

Jeff Kleiner
09-15-2025, 11:33 AM
What Rich said. Just driving normally on the street you won't see much more than 140. Oil temperature is directly related to RPM; go twist it's tail and run it hard then you'll it rise ;)

Jeff

JMD
09-15-2025, 11:59 AM
I do think the location of the sensor makes a difference as well. Mine is mounted on an adapter plate between the oil filter and block. It takes a few minutes of driving to come up but will reach about 220 in 8-10 minutes of driving. I don't think it would read that high if situated in the oil pan. It sits between 200-220 for me once warmed up.

BrewCityCobra
09-16-2025, 11:02 AM
What Rich said. Just driving normally on the street you won't see much more than 140. Oil temperature is directly related to RPM; go twist it's tail and run it hard then you'll it rise ;)

Jeff

That's great to know. I assumed the overall temp wouldn't be that high but was just concerned that my engine was running a lot hotter than I realized with that late reading.

BrewCityCobra
09-16-2025, 11:03 AM
I do think the location of the sensor makes a difference as well. Mine is mounted on an adapter plate between the oil filter and block. It takes a few minutes of driving to come up but will reach about 220 in 8-10 minutes of driving. I don't think it would read that high if situated in the oil pan. It sits between 200-220 for me once warmed up.

Yeah, I wonder about this a bit too. I suspect the pan is a bit delayed (and lower temp) given the volume of oil sitting there.