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Old 08-11-2021, 05:01 PM
JOHN COOKSON JOHN COOKSON is offline
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Quote:
Originally Posted by egallion View Post
Not to be a dummy - but what is OPSS?
The dumb questions are the ones that are not asked.

If you mouse over underlined acronyms a bubble will appear with the meaning.

The OPSS is a "normal open" switch that closes when the oil pressure rises. A OPSS is safety feature manned by the Coast Guard so the fuel pump will not operate unless the engine is running. The OPSS is usually located a bit below the fuel pump towards the transmission. There will be a wire from it to the fuel pump. On the other OPSS terminal will be a wire bringing electricity to the fuel pump - usually from coil +. Sometimes owners will move the OPSS to a different location for ease of access.

ex TRUE GRIT

Last edited by JOHN COOKSON; 08-11-2021 at 06:11 PM.
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