ecm control?
01-16-2024, 06:06 AM
#1
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ecm control?
i have a 91 305 throttle body injected car. im about to start my engine swap. im changing the injection type and will be using a holly HP ecm. my understanding is that the factory ECM only controls the fuel injection. i want to verify this so i can simply remove the ecm and factory wiring completely and replace it with my new setup.any suggestions from experienced engine swappers is welcome.
01-16-2024, 06:47 AM
#2
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Re: ecm control?
Fuel injection, spark timing (distributor), emissions equipment (AIR, EGR, CCP, closed loop), fuel pump, and the TCC lockup.
RBob.
RBob.
01-16-2024, 07:01 AM
#3
Member
Re: ecm control?
The ecm does a few things. It controls the TCC lockup. The coolant sensor by the thermostat is connected to the ecm to turn the fan on. It might do more.
01-18-2024, 06:26 PM
#5
Senior Member
Thread Starter
Re: ecm control?
okay good. i will have to look at the tcc lockup but other than that the holley is set up to control everything.
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