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Oil Pressure Sending Unit Question?

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Old Jan 13, 2007 | 04:35 PM
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Default Oil Pressure Sending Unit Question?

I think my OPSU is going bad. My oil pressure was always above 40 psi at idle after the heads/cam swap. I was driving around today and my pressure gauge started to fluctuate from 25 psi to 40 psi. It would increase with RPM but it would flutter erratically. I checked my oil level and it looks fine. I have approx 1500 miles on the clock after the swap and I'm using a ported LS6 pump.

Bad OPSU?
Oil Pump going bad?
Clogged Filter?

Any ideas?

I think I will start with the OPSU and a oil change.

Where is the OPSU located? Are there any pictures floating around here?

I tried the Search feature with no luck

Thanks
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Old Jan 13, 2007 | 04:43 PM
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its behind the intake. im going back out to the garage in a few after my feet thaw out, ill get a pic then.
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Old Jan 13, 2007 | 05:29 PM
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heres a pic.
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Old Jan 13, 2007 | 05:32 PM
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They sell a "special wrench" at PEP boys for removing this sensor.

Ref #4
Attached Thumbnails Oil Pressure Sending Unit Question?-view1.jpg  

Last edited by heavymetals; Jan 13, 2007 at 05:37 PM.
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Old Jan 13, 2007 | 05:35 PM
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Perfect. Thanks for the help.
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Old Jan 13, 2007 | 05:43 PM
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yeah but be very careful when removing the manifold or you will take the sensor out like me. It doesnt take but a little touch and you will be a your local dealer purchasing another for about $70. it is on the drivers sind behind the manifold almost were your coolent line connects.
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Old Jan 13, 2007 | 05:44 PM
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the socket isnt nessesary, but you will be better off getting it. the sending unit is a hex, but the edges are rounded, and you will just save some time and headache getting the proper socket
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Old Jan 13, 2007 | 05:51 PM
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Originally Posted by Z28_DAD
the socket isnt nessesary, but you will be better off getting it. the sending unit is a hex, but the edges are rounded, and you will just save some time and headache getting the proper socket
what did you use rather than the socket?
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Old Jan 13, 2007 | 08:21 PM
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Here is the part #
Attached Thumbnails Oil Pressure Sending Unit Question?-dsc00661.jpg  
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Old Jan 13, 2007 | 10:25 PM
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^that tool
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