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- #21
In the second to the last photo there are 3 relays. 2 came with the harness- Hot power to the computer and for the fuel pump. The third and left most is one that I added to use the terminal block getting power from the battery and activated by the ignition for running the computer, check engine light, cruise control and for my transmission when installed. It likely wasn't necessary but I thought it would be cleaner than running wires wires to the fuse block and taxing it further. Lessons learned are that the GROUNDS are ultimately important. All the ECU does really is route grounds to the sensors for operation. Ground the harness ground to the block and ground the motor to the frame, frame to body and body to the battery. How you do that is up to you. The second is that your injectors have to be in good shape. Mine are dirty, causing me an idle issue. Added some seafoam and through a couple tanks it will likely work itself out. If not, $60 ea is pocket change compared to what I have into the cruiser. third, it isn't as hard as I thought it would be. I have much more power and my pinging and detonation problems are gone. I have great throttle response now and am really happy with how everything turned out. Now that it is done, I will go back and clean up and shorten some wires and make it look right. In the motor pics you can see a lot of wires that are run here and there. Those will be fixed. I have a taurus fan running to a switch under the dash to do high and low. I will remove that completely and just run one wire for low to the fan from the relay. The motor needs to run at 180 and above to let the computer go into closed loop meaning that the O2 sensor is working to control fuel mixture. On a side note, the harness was done by affordable fuel injection. When initially starting the motor it would fire up for a second and die. Repeat. It would only fire when cranking. After troubleshooting everything I could think of, it ultimately came down to a pin at the ECU that was installed in the wrong spot. Worked with Norm at AFI and after moving it one spot over, voila fire in the hole. Found the problem when troubleshooting if I unplugged one of the injectors it would run. This told him what the problem was. I have a newer ECU than the typical one used for these conversions so that's why it was in the wrong position for mine. The fuel pump I used is running fine and isn't noticeable when I'm driving so I'm good with that. Adding the adjustable fuel regulator and gauge from CFM Tech to the TBI is very nice to have but not a must do item, that's up to you. I recommend it though. Now all I have to do is install the 700R4 and I will have overdrive. That will wait until I have time this winter. If you are doing this conversion and have any questions, hit me up and I will gladly try and help you out. Happy Cruising!
-Mako
-Mako
