Fueling Issue, Fuel pump primes but does not run with engine on Options

[Malek]

I just completed my 3rd gen 3SGTE swap. I am using the 3S engine harness with the 5S body harness and mated the EA1 plugs according to Manny's progress thread and cross referenced a few other threads.

The 3 leftover wires from the EA1 merge are white/black stripe, black/orange stripe, and blue/red stripe. I grounded the white/black stripe. Then, I connected the two others to a orange wire and ran that straight to the positive terminal battery.

I go inside, turn the key, fuel pump (walbro) primes and I start the engine. Engine runs for 20 seconds and then dies.

I then jumped the B+ to the Fp with a paper clip and it ran fine until I noticed the paper clip smoking so I turned the engine off.

Did some researching and found Lagos' thread on running 12ga wire to a relay to power the fuel pump Rewire Fuel Pump so I did exactly that and guess what. Same issue of shutting off after 20 seconds. Same issue as Fate but he isn't responding to my PMs

So I did some more researching and found this post:

yes, you can ditch the fuel pump relay, but if you do , you have to rewire it to work.

the fuel pump relay is used so that the fuel pump can go from Hi to LOW power mode. at least thats how it is on the 2nd gen motor.

Its the same way on the 3rd gen motor too. It is easy enough to rewire to bypass the resistor and have the COR power the fuel pump directly.

-Charlie

So I messaged him (don't expect a response since he posted this back in 06 ahaha) to see how he did it.


Here are my thoughts:
-Straight up connect Pin 1 from the COR to the Fuel Pump (is this what Charlie up there meant?) Or do I jump pins 1 and 4 on the Fuel Pump Relay?
-If I go straight from the COR to the fuel pump, the relay couldn't switch to Hi/LOW power mode. Is that ok?


Here's another diagram (sorry it's to another site):
3SGTE wiring diagram


Will the COR properly operate the fuel pump if it is directly wired to it?

Side note: I promise I'll update my progress thread later. Just want this figured out!

THANKS FOR ANY INPUT! As you can see, I have exhausted my searching functions haha

[Batman722]

The fuel pump resistor pack is bad.
Bypass it and the car will run a little rich but will be ok or replace it.

edit: My solution was ... a 205 or 185 one was way too much $ from the dealer. I bought a brand new one from a mid 90s land cuiser (I think) for about $15 and used that. No problems since. You just have to find a resistor pack with the same oms resistance.

This post has been edited by Batman722: Mar 18, 2013 - 8:34 AM