2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Fuel time

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Old Apr 4, 2002 | 01:44 PM
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Fuel time

From the time I turn my fuel cut off switch On, how long does it take for fuel to get into the engine?
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Old Apr 4, 2002 | 02:00 PM
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In about 2-3 seconds...


-Ted
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Old Apr 4, 2002 | 02:12 PM
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It will run normal for about 2 seconds after hitting the switch, then it will just die. Make sure and turn the switch on right before, or as you are truning the key.
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Old Apr 4, 2002 | 02:22 PM
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There are two ways of using a fuel pump cut-out switch.

1) Turn the switch off, crank for about 10-15 seconds - this clears out all the fuel.&nbsp Stop the cranking, turn the switch back on.&nbsp Crank over and the engine should start.

2) Turn off switch, crank over - you'll hear the engine start to catch.&nbsp If you're good enough, you can throw the switch just as it's catching and get the engine to start.&nbsp This is the "advanced" method.


-Ted
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Old Apr 4, 2002 | 02:28 PM
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However, I'm having trouble finding which relay this is. Am I going to have to get inside of the underside of the driver's dash to do this, or is it bunched with the wires along the steering column?
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Old Apr 4, 2002 | 02:29 PM
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Look down the steering column from the steering wheel down.&nbsp It's the only relay mounted ON the steering column itself.



-Ted
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Old Apr 4, 2002 | 02:33 PM
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Oh, I see. Beauty. Now for some tugging and jerking at that thing to get it out.
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Old Apr 4, 2002 | 02:37 PM
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The relay is mounted on a metal "tab."&nbsp Be careful when pulling under the dash - there's some very SHARP metal edges that can easily cut your hands up if you're not careful!



-Ted
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Old Apr 4, 2002 | 02:39 PM
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Lots of wires... the black one with the white stripe that goes into the black plug?
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Old Apr 4, 2002 | 02:40 PM
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Running back and forth from the garage while posting these. Looking for the metal tab
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Old Apr 4, 2002 | 03:03 PM
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Two black/white wires - one is power +12VDC, one comes from the ECU
Blue/red goes to the fuel pump itself - non-turbo wiring shows this to be just a blue wire.
Black/red comes from airflow meter for fuel-cut.
Black is ground.


One of the black/white wires is thicker - you can interrupt this circuit, but you need a 20A minimum rated switch.

The blue/red wire should be just as thick as the above.&nbsp Same caution with the switch.

You can try the black/red wire from the airflow meter.
Or, you can try the black ground wire.
These two would be the safest and lowest current of all the wires that would work with a fuel pump cut-out switch.

My personal FC runs a 30A rated switch into the blue/red wire.



-Ted

Last edited by RETed; Apr 4, 2002 at 03:16 PM.
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Old Apr 4, 2002 | 03:15 PM
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Crap, tried to edit by hit the wrong button...



-Ted
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Old Apr 4, 2002 | 05:38 PM
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Wow. My switch burned out, it's heavy traffic to Radio Shack, and it's snowing and dark outside now. Maybe I should just give up tonight...No, I'm running out to Radio Shack
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Old Apr 4, 2002 | 08:33 PM
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I'm not an idiot

Okay, both the blue/red (blue in 88s), and small blue/red wire are wrong

I've done this procedure twice in the last two hours and both of them just controlled something else. So I'm really serious, WHICH WIRE IS IT?
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