Im not a newb at this but my car is showing me the engine light and for some reason when i check the codes i only get 12. now here are some of my own suggestions. i was throwing a 23 code and i put a resistor in the line and it made the 23 code go away but i didnt put a new sensor in it, so im not sure if that could be the reason also i have a few sensors not pluged in that i was told wasnt neccesary, but i do not have my oil pressure/fuel cut off relay on the car, nor do i have the normal oil pressure switch hooked up to the harness. and i also dont have both fans hooked up, i have 1 hooked up but it never kicks on at any temp with the relay and CTS pluged in and i also dont have the secondary fan sensor pluged in(in most cases i dont have the sensor at all) i doubt any of this will show me the engine code but can anyone help me out!?

 

come on guys, i need some help

 

ttt

 

Dude, I tried reading all that but my head hurt. So much ghetto-rigging, sensors disconnected, resistor, etc.

Put your car back normalized state and go from there.

Get all the resistors out, connect all the sensors.

Then get a scanner and capture data while you're driving, so you can see what each sensor is reporting. If the ECM throws an error while you're driving, the scanner will likely catch it.

 

it was never normal, the car originally came 305 LG4 i converted it to tpi and have a 400 sbc now. plus the fuel cut off sensor, well the hole in the top of the back of the block the old sensor broke off then the E-Z out broke off in it and made a perfect seal out of it....so theres thats ruled out. all sensors are new, there is only 1 resistor and i put that in to check to see if my MAT sensor was bad. plus i dont have all the wires in the ALDL port (they are there, just not put into the ALDL-2 orange wires) so that rules that out as well. and for the oil pressure, i put a gauge in so i used the other hole for that, which leaves no other alternative for the fuel cut off and oil pressure sensors. there is no spot for the secondary fan temp sensor. so that also rules that out. so i cant get it back to a "normalized" state.

 

I'd say get a scanner and grab some run data while driving the car, see what shows up. Maybe a sensor returning bad/no data intermittently.