When swapping an carbed engine to a carbed engine with a new carb and HEI dizzy, does the ECM need to stay connected to get the torque converter lock up switch to work?(the one running from pin A and F on the ECM plug in)
When using that switch, do you just flip it off to unlock the converter or does it need another switch to unlock it?
Also, will the stock electric fan come on or will i need to rewire it to come on all the time?
thanks

 

The ECM needs the inputs from the computer sensors in order to continue to perform functions such as converter lock-up. It has been speculated on this Board that if you kept the CC distributor and provided a remote throttle position sensor, and kept all of the other sensors intact and operating (MAP, BAP, CTS, etc.) the ECM would stay fat, dumb & happy, not knowing it isn't a computerized carb. It might set error codes if your mixture doesn't stay within bounds, though.

The ECM accomplishes TC lockup by grounding the circuit. When you "throw" the A-F switch, you are simply grounding the TC solenoid circuit. Open is unlocked. The power to the TCC solenoid goes through the brake switch. As long as you don't disturb that circuit, it will work with a grounding switch.

 

well, that dizzy is already gone so what are my options?
i also don't plan to have those sensors intact. I want this "dumbed" down as much as possible.
Will the A to F toggle work with the ECM gone or do I need to keep power to it, although it will throw errors for just about everything?

 

just get a lock up kit and be done with it no worries about the computer hell you can throw it away.

 

i don't want to buy a lock up kit because i plan on doing a auto to standard tranny swap and don't want to spend money on something that i might use for a week.