Adding a Oil pres. switch to a mad set up? - Team Camaro Tech
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post #1 of 6 (permalink) Old Nov 20th, 07, 04:34 PM Thread Starter
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Question Adding a Oil pres. switch to a mad set up?

I've got the diagram (page 9) on how to wire it in but here is my question.
It shows a connection from the S term on the pres. unit to start circuit, do I run this to the starter side of the starter remote. Or is there another place to wire it to I'm thinking that's going to be a ton of amps and it would smoke a oil pres fuel cut off. Any pointer might help me get this thing back on the black top.

Thanks D
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post #2 of 6 (permalink) Old Nov 20th, 07, 05:50 PM
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Re: Adding a Oil pres. switch to a mad set up?

That's weird. I can't imagine what an oil pressure switch would be doing in a starter circuit...unless there was a fuel pump involved. Sounds like smoke. Mad Electrical stuff is quite popular so I'm sure someone will answer your question soon.

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post #3 of 6 (permalink) Old Nov 20th, 07, 08:05 PM Thread Starter
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Re: Adding a Oil pres. switch to a mad set up?

I'm might have confused you, yes it is a oil psi switch to cut off the power to a fuel pump relay. What I have is (GM Switch) I- to ingnition switched source/ P- to termanal #86 on relay/ S- goes to start ciruit. Does the S- go to the starter side of the remote to the starter or does it go some other place? The last thing I want is to see or smell smoke.
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post #4 of 6 (permalink) Old Nov 20th, 07, 08:26 PM
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Re: Adding a Oil pres. switch to a mad set up?

The "S" would go to the "R" terminal, if your starter has one. If it don't, it could go to the same terminal as the purple wire.

The idea here is that when the engine is running and has oil pressure, the oil pressure switch energizes the fuel pump relay. Lose oil pressure, switch opens, fuel pump shuts off. Car dies in a few seconds, after the carb bowls run dry at WOT, considerably longer cruising mildly. (Kinda makes this a lot better idea with efi, no pump no fuel, right now)

All well and good, but how do we start the car? Car not running, no oil pressure, no fuel pump?

The wire you're speaking of needs to be in parallel with the oil pressure switch, to give an alternate path to energize the relay when cranking.





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post #5 of 6 (permalink) Old Nov 20th, 07, 09:39 PM Thread Starter
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Re: Adding a Oil pres. switch to a mad set up?

Ok Think I got it now, the S- wire would go to my trigger wire on my remote starter slonoide. Allowing power to trip the fuel pump relay during starting, once motor starts the oil psi would close the switch and the trigger would get it's power from the switch pathway.
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post #6 of 6 (permalink) Old Nov 20th, 07, 10:16 PM
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Re: Adding a Oil pres. switch to a mad set up?

And that 3 wire switch will keep the fuel pump circuit from backfeeding to the starter!

Sounds like you got it





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