I'm having problems installing this thing.I have a 91' 5.7,is the fuel pump relay behind the brake booster? and is it the one in the middle? if it is, there is not a tan/white wire connected.in fact the only tan/white wire there is goes to the master cylender. please... any help will do. I was going to connected to the green,but decided not to. I want to be sure before cutting.

 

If you have the F'bird body, it might look like this:



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Later,
Vader
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"Fear is how I fall, Confusing what is real..."
Adobe Acrobat Reader

 

I have a 91'z-28 5.7L.sorry,but nothing like that, there is three small boxes about half of the sizes of the ones shown. from the haynes manual it should be the middle relay. it has 5 wires...blk/wht...orange...pink...grn/white.....gray..I keep looking around all three relays and no tan/wht wire.even the manual states there is one.thanks for the help

 

Well, it's time for a volt meter then.

I'm thinking it's the PINK wire that you mentioned, but you need to make sure before you go wiring your O2 sensor to it.

Ground one lead of the meter, and probe up inside the connector where the corresponding wire goes in (make sure you make good contact with the meter). You want 12volts when the ignition is in the ON position WITH the engine running. I say WITH the engine running, because if you plan on using the Fuel Pump relay, the positive wire will only remain energized for two seconds with the key simply in the ON position with the engine not running. That's why it MUST be running when you check it.

With the key in any other position, you want to have ZERO volts showing on your meter.

One other note....MAKE SURE that it's the fuel pump POWER wire coming out of the relay, and not the "Fuel Pump 'ON' Signal" wire going into the relay from your ECM. Reason being, the "signal" wire used to energize the relay will show twelve volts but it doesn't have enough current (amps) to power up the heater element in your O2 sensor.

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86 Trans Am WS6 Black with tinted windows, shaved door handles
ZZ4, Mini-ram, true duals, LT4 HotCam, AFR 195 heads.
***Too many other mods to mention***

"In the future, cities will become deserts,
roads will become battlefields, and the hope of mankind
will appear as a stranger" The Road Warrior

[This message has been edited by Steves ZZ5 (edited May 13, 2001).]

 

Hey Vader is there any part of your car you haven't taken a pic of yet? I love the illustrations! They help alot.

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<marquee>'87 Trans Am:
(Engine)305 TPI,180 Degree Thermostat,JET Fan Switch,TB Bypass,Accel 300+ 8.8 Racing Wires,Accel Super Coil,Bosch Platinium Plugs,Custom Ram Air with K&N,Removed Emissions Equipment & Cat.(Stereo)Full Kenwood Excelon System Member at kyfbodies.org</marquee>


[This message has been edited by jobryan26 (edited May 13, 2001).]