HELP me eliminate oil pressure switch
Thread Starter
Junior Member
Joined: Feb 2005
Posts: 1
Likes: 0
From: Chicago, IL
Car: 04SRT,89Formula,84Z28
Engine: 5.7TPI
Transmission: 700R4
HELP me eliminate oil pressure switch
I am installing new gauges, one of them being an oil pressure gauge. I also have long tube headers and the switch is too close for comfort. The old school switches are two wires and all you need to do is jump the wire. I have an 89 formula and the oil pressure switch is 3 wires. I don't have the shop manuals and dont know how to bypass this switch.
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Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
The oil pressure switch is a backup for the fuel pump relay. It doesn't need to be bypassed, it can just be eliminated.
If it's too close to your headers, you could relocate it to the top of the block.
If it's too close to your headers, you could relocate it to the top of the block.
Supreme Member
Joined: Mar 2002
Posts: 4,812
Likes: 0
From: 62656
Car: 1991 S10 pickup 2700lbs
Engine: 4.3L Z TBI
Transmission: 700R4
Axle/Gears: 3.08 7.625"
on the LG4 vehicles what purpose does this switch provide ?(two spade terminals ones)
i know that some dont have an oil sender unit by the distributor.,
i know that some dont have an oil sender unit by the distributor.,
Last edited by Randy82WS7; Mar 12, 2007 at 05:12 PM.
Moderator
Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Some LG4s had electric "helper" fuel pumps, and on those cars the oil pressure switch turned on the pump. AFAIK, all the LG4s had their oil pressure sender or warning light switch on the top of the block.
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Moderator
Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
That's the head of a pipe plug in the oil galley. If it wasn't there you'd have a fountain of oil from the unusued hole.
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