Author Topic: 87 Chevy r10 suburban oil sensors  (Read 781 times)

Offline Juniorfan

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87 Chevy r10 suburban oil sensors
« on: September 26, 2018, 11:35:34 AM »
I'm finishing an engine rebuild on an 87 Chevy r10 suburban.  There is an oil pressure sending unit on the intake by the distributor.  There is another sensor on the oil filter housing where the oil cooler lines go into.  I'm needing to know what this sensor is and where it's wire feeds to.  Any help would be greatly appreciated as I'm ready to final tune it and need to know if this will hinder the process or not.  Thank you very much in advance.

Offline ehjorten

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Re: 87 Chevy r10 suburban oil sensors
« Reply #1 on: September 26, 2018, 12:53:25 PM »
One is for the gauge and the other is the oil pressure sender for the TBI fuel pump circuit.
« Last Edit: September 26, 2018, 12:58:05 PM by ehjorten »
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6

Offline bd

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Re: 87 Chevy r10 suburban oil sensors
« Reply #2 on: September 26, 2018, 07:58:43 PM »

On TBI engines, the OPS adjacent to the distributor is a redundant switch to power the fuel pump in the event of fuel pump relay failure.  The sensor located adjacent to the oil filter controls the instrument panel oil pressure gauge.
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)