Progress Thread Tannerc91gt’s Build(s) Thread

All the fuel leaks are fixed. Having fuel pressure issues though. No amount of cranking on the FRP adjuster seems make a difference, always about 35psi. Pump sounds weak as well. Some of this I attribute to the battery needing a boost, so it's going to sit on the charger all night.
I'm also currently running the power wire from the Holley directly to the pump so tomorrow I've got a couple relays to tie in.

Also considering throwing the regulator at a wall or something. Keeping my options open.

The battle continues
 
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Enough idling, post a video of you reving it!

It does sound pretty badass though....:nice:

Good job man.
Initially all you could do was rev it, it wouldn't idle. Then it idled but wouldn't rev.
Now it sorta does both.
Hopefully it'll get sorted out tomorrow.

Anything to put off pulling out the transmission
 
Expansion tank made a friend today.
IMG_3061.webp


Anyone familiar with laid down radiator/expansion tank type setups enough to tell me if im on the right track?

IMG_3234.webp

IMG_3234.webp

Steam port to the side of th expansion tank, bottom of the tank to the port on the radiator and then obviously the port under the cap of the tank goes to the overflow.
 
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Well adding in a couple relays for the pump has rendered the whole operation useless.
IMG_3235.webp

Can't get the pump to prime. Relays test fine.
Pump runs if you run 12v directly to the stud.
It's wired per the directions. Etc,etc.
The Holley is tripping me up somewhere and I haven't tracked it down yet.
Moved onto wiring the Taurus fan. The fan is grounded by the ECU and the powered side will eventually be run through a relay as well.
But to test it I hooked the ground up to the I/O harness and the power wire to the starter relay stud......it barely spun.

So I grabbed the smaller cheapo fan that came with my old radiator and wired it up the same. It spun but wasn't moving hardly any air. Just wasn't getting any juice it seemed.

Took it around back and hooked the leads directly to the battery and it took off like it should. So it appears I've got some kind of power supply issue.
Going to have to spend some time with a meter in a couple weeks.
:thinking:
 
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..... you are using the ecu output to fire the relay right. The relay should get 12v to one side of the coil then the ecu grounds the other side of the coil, this pulls the relay closed and the relay holds the load of the device.. (fan pump ect)

If you are wiring a relay to supply 12v and then the ground load of that device is being carried by the ecu you will burn the ecu up. The ecu should ground the relay only.

Sorry if I misunderstood what you said in the last post but if it is wired the way i think it is you will be replacing the I/O board.
 
IMG_3273.webp

Here's how it is wired. Except the orange to the ignition switch is run to the green trigger wire on the ECU. The red goes to the 12v at the disconnect and the blue to the pump
itself.

The fan will only be grounded by the ECU
 
How are the relays grounded? The ecu should supply ground to the relay not 12v.. all I see in the picture are 12v hot leads.

Orange would be 12v to coil
Red 12v feed for relay contact
Blue 12v feed out to device.

But I could be wrong.
 
Looking at the fuel pump relay picture again I see the black wires are grounded at the bracket. It needs to be rewired.
-Orange and red go to 12v fused
-Black goes to the fuel pump output from ecu (green trigger wire)
-blue to fuel pump
 
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Looking at the fuel pump relay picture again I see the black wires are grounded at the bracket. It needs to be rewired.
-Orange and red go to 12v fused
-Black goes to the fuel pump output from ecu (green trigger wire)
-blue to fuel pump
This way would make the most sense to me.

Edit:so both red and orange can go to the cutoff because the pump will be triggered by the ECU grounding the relays, correct?
ECU still sees key on and then the rpm required for the pump to kick on so it should still function all the same in that regard.

The fan thing makes sense also, I'll have to wire it up correctly instead of trying to test it out the half-ass way
Thanks as always @a91what
 
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