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ECU Wiring 

 

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 Post subject: ECU Wiring
Posted: Fri Dec 19, 2008 9:06 pm 
Stock as a Rock
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I have just installed a immobilizer in to me 92 NC Fairlane. And i was wondering if i cut the power from the ecu relay will it cause any problems with my ecu. I am looking at cutting the red wire which is pin 5

Cheers Rick
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Posted: Sat Dec 20, 2008 12:06 pm 
Getting Side Ways
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the ecu has more than one power feed.
You would be better off intercepting the fuel pump trigger, or PIP wire, or injector power etc etc. Plenty of ways you can do it
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Posted: Sat Dec 20, 2008 5:07 pm 
Stock as a Rock
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I went with the ecu relay wire. Which is pin 5 on the ecu which cuts off power to everything.

Thanks for your help
Rick
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Posted: Sat Dec 20, 2008 5:41 pm 
Getting Side Ways
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just make sure you're not constantly resetting the ECU as it will default all of the fuel trims and start to run like a bag of poo!
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Posted: Sat Dec 20, 2008 6:53 pm 
Stock as a Rock
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Ride: 1997 EL Fairmont,2008 FG G6E

Location: Melbourne
VIC, Australia

From what i can see in the factory ford manual. Pin 5 is only ign power wire which also connects to pin 37 & pin 57 which are ign power wires as well. But if i still have the battery back up wire still connected. Will the computer reset all the time ?
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