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Sensor leaking oil - can't tell what it is

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Old 03-12-2017, 07:08 PM   #1
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Sensor leaking oil - can't tell what it is

Hi,

I have 2002 RSX base model which is leaking fluid which looks like oil from a sensor. I am not sure what this sensor is, but it is located on the passenger side and is located below valve cover. I am including and picture where the part is circled in red.

Background on why the interest: the oil (liquid) is dripping on the serpentine belt and is making it squeak. Squeaking goes away eventually (15-20 min of city driving). I have replaced the serpentine belt and tensioner pulley to no avail thinking squeaking was driven by lack of mechanical force. Given the fact that noise goes away after about 15-20 min of driving, and given a mechanic I trust and deem honest, could not identify anything wrong with the tensioner system, only hypothesis left is that this sensor is leaking oil (liquid), dripping on the belt, and causing the belt to slip and squeak. Hence, I would like to replace the leaky sensor to eliminate the noise, in addition to the fact there is enough oil (liquid) accumulating and dripping on the ground - not something I want in the driveway.

I would appreciate any help in identifying the part and understanding if the oil (liquid) leaking is something I can repair or would need a new part. It is located in the gloriously great location for work.
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Sensor leaking oil - can't tell what it is-acura_rsx_engine_side_annotated.jpg  
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Old 03-13-2017, 09:00 PM   #2
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That part is the VTC Oil Control Valve Assembly, P/N 15830-PNC-003. If the valve itself is leaking around the connector, it may need to be replaced. There is also an o-ring to seal it to the head, P/N 15832-PNA-023. If you are lucky, this o-ring might have failed and it is an inexpensive fix. If it is the valve, an aftermarket replacement can be found for under $20. To remove it, remove the retaining bolt and then twist back and forth as you pull it out.
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Old 03-13-2017, 09:48 PM   #3
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Thank you!!
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