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2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 02-05-2016
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Gauge doesn't work

My 2003 3.0 flex oil pressure gauge doesn't work. Anybody have any idea where the switch is in the block so I can find it?
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Old 02-05-2016
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Behind passenger side head on the block, where bell housing bolts to block.

Picture here in first post: Replacing the Cam Sync

Shows engine from the back, out of the truck, to the right you will see the oil pressure switch with white connector.


This switch is either open, no pressure, or closed, more than 5psi in pressure, it is the Ground for the gauge, should just have 1 wire, probably dark green.
With key on, engine off, if you Ground this wire to the engine then oil pressure gauge should go up to it's "normal" position, if it does that means wire and gauge are OK, replace switch.
If it doesn't then the problem is most likely not the switch.

Last edited by RonD; 02-05-2016 at 12:07 PM.
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Old 02-06-2016
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Thanks. Found it and fixed it. Gauge works great now
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Old 02-07-2016
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Good work

Thanks for posting the fix
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