minerdude1

Ok, so I got everything done, motor is in, wiring is done, exhaust is on, and the motor starts but only runs for about 5 seconds. I wired in the OBDII diagnostic port, and the CEL is on, but when I hook up my diagnostic tool, it says error1. Can someone tell me what pin on a 98 manual ecu the diagnostic port reads off of? I want to make sure I have it hooked up to the correct port. Once all the kinks are worked out I will be making a nice write up on everything for yet another resource out here for everyone to use.

I have had trouble finding an ecu pinout for my ecu with it being a manual. It seems that everything I find is for an auto with the fatter plugs. I have downloaded all the diagrams from Toyota Tech Info, and have looked at all the NCTTORA diagrams. Any help is greatly appreciated!

minerdude1

Ok, I am a dumbass, just found what I was looking for stickied above. Thanks!

sirhk100

Runs for 5 seconds and dies? Fuel issue? Pump pressurizes to let it fire but then can't keep up with demand possibly? Just tossing ideas...

minerdude1

Should not be a fuel issue, I didn't do anything to that part of the circuitry. I realized I did not switch my oil pressure sensor and still have the original 3.4 sensor on it. I am wondering if it is because of that... my oil pressure gauge goes all the way up with key on, so I am going to switch that out. I also realized I have my diagnostic wire going to the wrong pin. I am going to fix that and hopefully that will tell me exactly what is not functioning properly.

UKrunner

COR and fuel pump wiring. There about eleventy billion threads on how to fix this and even pictures of where the wires go.

yodathespian87

https://www.yotatech.com/forums/f160...13/index9.html

minerdude1

I am pretty sure I have the COR wired correctly. I had to splice in a wire for that, which I think many people forget to do.

UKrunner

Is your maf in backwards?

minerdude1

Nope MAF is in correctly. I did some more looking into it, and I did have the wire splice for the COR done correctly, but I decided to try grounding my air flow meter wire. That worked and the truck stays running. Only problem now is that my diagnostic port doesnt work to tell me what CEL is being thrown. My diagnostic tool tells me Error1, and I am very sure I have the wire going to the correct ecu pin.