I am not sure why I never did this but I pulled all 3 plugs on the PCM and the only thing different was I lost all the check engine lights (THANK GODDD!). So I am wondering why there are a million wires going to it. I had lost some functions after rewiring my truck but I thought the PCM was still doing other things, apparently not. From what I can gather, this is all it runs on my truck:
[*]Coolant Temp Gauge (Got my own, accurate to the degree exactly (digital))
[*]RPM Gauge (Got my own, accurate to the 100ths of a revolution, 1000ths if I am below 1000RPM(digital))
[*]Grid Heater Relays/WTS Light (don't care)
[*]Water In Fuel (WIF) Light (especially don't care)
[*]Check Engine Light (an issue would be obvious on a 12v)
[*]ABS (never worked anyways)
[*]Cruise Control (never worked right)
[*]A/C Compressor (rewired to run off of pressure switches)
[*]Maybe Airbags (Don't want to check)
[*]Voltage Regulator (Got an external one for 1st gen)
I don't think it runs anything else. I think I will put the grid heaters on a timer relay, got everything else taken care of. Then I will get rid of all those wires. Maybe even, eh, hmmmmmm.
I am not sure why I never did this but I pulled all 3 plugs on the PCM and the only thing different was I lost all the check engine lights (THANK GODDD!). So I am wondering why there are a million wires going to it. I had lost some functions after rewiring my truck but I thought the PCM was still doing other things, apparently not. From what I can gather, this is all it runs on my truck:
[*]Coolant Temp Gauge (Got my own, accurate to the degree exactly (digital))
[*]RPM Gauge (Got my own, accurate to the 100ths of a revolution, 1000ths if I am below 1000RPM(digital))
[*]Grid Heater Relays/WTS Light (don't care)
[*]Water In Fuel (WIF) Light (especially don't care)
[*]Check Engine Light (an issue would be obvious on a 12v)
[*]ABS (never worked anyways)
[*]Cruise Control (never worked right)
[*]A/C Compressor (rewired to run off of pressure switches)
[*]Maybe Airbags (Don't want to check)
[*]Voltage Regulator (Got an external one for 1st gen)
I don't think it runs anything else. I think I will put the grid heaters on a timer relay, got everything else taken care of. Then I will get rid of all those wires. Maybe even, eh, hmmmmmm.