Hello:

 

I've plugged in my harness and the ECU is not operating the fuel pump. Obviously I've screwed something up! Surprise surprise.

 

Anyway, before I go to the junk yard for a new harness to send to someone who knows what they're doing, I thought I'd try to figure it out.

 

I have fused power going straight from the battery to the ecu and to the main ignition relay. I have switched power going to the light green wire on the ignition relay. I get 12v through the relay to the yellow red wires when I turn on my ignition and the big yellow wire at the fuel pump relay has 12v with the ignition on. The small yellow wire at the fuel pump relay which comes from the ecu b58 pin 13 doesn't have any power with the ignition on. I tried attaching it to switched power, but the ECU is not grounding out the light green black wire. Any ideas appreciated. I have checked my ground wires over and over and will check there again.

 

 

 

Daniel

Ok-

 

So a little more fiddling and now my fuel pump is cycling on for a second when the ignition is turned on, so I'm feeling better. I'm quite sure the engine is flooded at the moment from me hot wiring the fuel pump earlier, so I'm going to let it sit for a while and then try to fire it up. I'll post more later.

 

Daniel

ARGGGH!

 

Now the fuel pump is not cycling on with the ignition switch.

 

I've rechecked my grounds, although this must be my problem. Any opinions?

 

Daniel

ok:

 

So now the fuel pump is working correctly, but it still wont start.

 

I've noticed that I'm getting low voltage to my injectors while the ignition is off, approx. 1 volt. I get 12 volts once the ignition is on? Could this cause it to not start?

12 volts to the injectors when ignition is on

 

you should have none if it is off.

 

you have ecu power while cranking? check that..

make sure you do..

 

it's a common mistake.

 

 

also be sure you have fuel pump power while cranking as well

 

(if you have to, grab current at the starter)