- Joined
- 3 May 2020
- Messages
- 237
Another common problem fixed! The OEM oil pressure sending unit often fails. It can cause a messy oil leak and it can be the source of an incorrect oil pressure reading. In my case, I had both.
My oil pressure would be fine at cold start, but the moment I would drive around and get up to temp, my oil pressure would show zero at idle. Obviously this is scary if you don't know this is a common issue with NSX's. That's not to say you should always expect an incorrect oil pressure reading to mean your engine is ok, but most of us have had this issue for years and just brushed it off as the new normal.
Yes, I have used the SOS relocated sending unit and that was what was removed in favor of another OEM unit. Check out the video if you are interested in what it takes to replace it. All part numbers are listed in the video description.
In this video I'll show you how to assemble and install a new OEM Honda/Acura Oil Pressure Sending Unit on your 1991-2005 NSX. This video is an install only because the removal is located in another video linked below.
Parts:
OEM Honda Oil Pressure Sending Unit: 37245-PR7-A02
OEM Honda O-Ring (Required Qty: 1): 91302-PR7-A00
OEM Honda O-Ring (Required Qty: 1): 91319-PR3-003
Optional Parts: OEM Honda Oil Pressure Sending Unit Passage (Base)**: 37241-PR7-A00
OEM Honda Oil Pressure Sending Unit plug bracket: 37242-PR7-A00
**I reused my sending unit base in this video.
Tools:
12mm offset wrench (stubby wrench is nice to have too), Extensions,12mm Flex Socket
0:00 - Intro
3:38 - Disassembly
4:25 - Assembly
8:19 - Installation
18:54 - Inspect for Leaks
19:41 - Verdict: SOS vs OEM
Reference this video for removal of the OEM oil pressure sending unit:
My oil pressure would be fine at cold start, but the moment I would drive around and get up to temp, my oil pressure would show zero at idle. Obviously this is scary if you don't know this is a common issue with NSX's. That's not to say you should always expect an incorrect oil pressure reading to mean your engine is ok, but most of us have had this issue for years and just brushed it off as the new normal.
Yes, I have used the SOS relocated sending unit and that was what was removed in favor of another OEM unit. Check out the video if you are interested in what it takes to replace it. All part numbers are listed in the video description.
In this video I'll show you how to assemble and install a new OEM Honda/Acura Oil Pressure Sending Unit on your 1991-2005 NSX. This video is an install only because the removal is located in another video linked below.
Parts:
OEM Honda Oil Pressure Sending Unit: 37245-PR7-A02
OEM Honda O-Ring (Required Qty: 1): 91302-PR7-A00
OEM Honda O-Ring (Required Qty: 1): 91319-PR3-003
Optional Parts: OEM Honda Oil Pressure Sending Unit Passage (Base)**: 37241-PR7-A00
OEM Honda Oil Pressure Sending Unit plug bracket: 37242-PR7-A00
**I reused my sending unit base in this video.
Tools:
12mm offset wrench (stubby wrench is nice to have too), Extensions,12mm Flex Socket
0:00 - Intro
3:38 - Disassembly
4:25 - Assembly
8:19 - Installation
18:54 - Inspect for Leaks
19:41 - Verdict: SOS vs OEM
Reference this video for removal of the OEM oil pressure sending unit:
