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The Terminator
How-To
Return style wiring HOW TO allowing OE type fuel pump actuation
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<blockquote data-quote="MalcolmV8" data-source="post: 11445130" data-attributes="member: 8854"><p>No signal from FPR back in the fox days. I know those very well because I used to put 302 EFI mustang setups in Rangers and wired up many of them. There's a signal from the ECC (I don't have the pin memorized but can get it from my wiring diagrams in the garage) that triggers the fuel relay. So yes the ECC controlled the fuel pump back in the fox and SN95 302 days.</p><p></p><p>I don't know if we can make the current ECC in our Cobras simulate that old behavior or not? It's pin 1 at the FPDM which comes from the ECC. If there was a way to reprogram the ECC to simulate the old behavior of return setups that would be great.</p><p></p><p>However - the old fox eccs A9L etc. were capable of driving a relay from that pin. The new ECC in our cars only ever had to send a signal to the FPDM so it may very well not be capable of driving a relay. That's why I thought I'd just build a circuit to receive that signal and control a relay myself.</p></blockquote><p></p>
[QUOTE="MalcolmV8, post: 11445130, member: 8854"] No signal from FPR back in the fox days. I know those very well because I used to put 302 EFI mustang setups in Rangers and wired up many of them. There's a signal from the ECC (I don't have the pin memorized but can get it from my wiring diagrams in the garage) that triggers the fuel relay. So yes the ECC controlled the fuel pump back in the fox and SN95 302 days. I don't know if we can make the current ECC in our Cobras simulate that old behavior or not? It's pin 1 at the FPDM which comes from the ECC. If there was a way to reprogram the ECC to simulate the old behavior of return setups that would be great. However - the old fox eccs A9L etc. were capable of driving a relay from that pin. The new ECC in our cars only ever had to send a signal to the FPDM so it may very well not be capable of driving a relay. That's why I thought I'd just build a circuit to receive that signal and control a relay myself. [/QUOTE]
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How-To
Return style wiring HOW TO allowing OE type fuel pump actuation
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