I just replaced the knock sensor wire and I noticed this little guy seem to be pretty but then out of shape. Was thinking that might have broken or soon to be broken wires. Near the dipstick, connects to the bottom of the engine near the front then goes into the loom that goes over the timing cover. What is this guy?

1988 4runner with 3vze


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On my ‘88 SR5, it goes to the oil pressure sender.