2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

What Runs off the ECU? (been a while)

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Old Dec 16, 2013 | 07:50 PM
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What Runs off the ECU? (been a while)

I am finishing up my build (dark side of the forum).. I want to remove the ECU from the passenger footwell but do not remember everything that it helps function. I remember most of it was just fuel injection, sensors, etc...

I do not need the following to function:

Guages
Idiot lights
Security
Fuel pump

Obviously I am on full stand alone..

Things I still need to work:

Windows
Sunroof
All lights

Does removing the ECU under the floorboard effect any of that.?
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Old Dec 16, 2013 | 08:05 PM
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Windows, Sunroof, All lights. These items are not dependent on the factory ECU.
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Old Dec 16, 2013 | 09:02 PM
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Originally Posted by satch
Windows, Sunroof, All lights. These items are not dependent on the factory ECU.
Cool, one last thing.. Blower controls don't either right?
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Old Dec 16, 2013 | 09:14 PM
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No for just the fan. ECU does control A/C working though in addition to the auxillary electric fan I think.
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Old Dec 16, 2013 | 09:16 PM
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From: Spring Hill TN 37174
Originally Posted by satch
No for just the fan. ECU does control A/C working though in addition to the auxillary electric fan I think.
Ok, my standalone starts the electric fans.. No A/C in my car.
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Old Dec 16, 2013 | 10:19 PM
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take the wiper harness off your Engine harness,you will need it.
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Old Dec 16, 2013 | 11:53 PM
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How To Megasquirt Your 2nd Gen RX-7: Modify The Stock Wiring
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Old Dec 17, 2013 | 06:13 AM
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In a convertible the wipers are bundled with the engine harness, not in a coupe. The ac also passes through the ecu, neither affects you more of a fyi for others reading.
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Old Dec 17, 2013 | 06:20 AM
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Originally Posted by Rob XX 7
In a convertible the wipers are bundled with the engine harness, not in a coupe. The ac also passes through the ecu, neither affects you more of a fyi for others reading.
Rob,I had to take the Wiper motor Harness off the Engine harness in my 86 coupe to have wipers.I'm running Haltech.
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Old Dec 17, 2013 | 08:52 AM
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Originally Posted by misterstyx69
Rob,I had to take the Wiper motor Harness off the Engine harness in my 86 coupe to have wipers.I'm running Haltech.
really? maybe its a 1986 thing?
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Old Dec 17, 2013 | 12:19 PM
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Ya,there is 3 connectors that come through the firewall along with the main harness,one to the AWS bottle and the others to the wiper motor and cruise control actuator.
You just unwrap the harness and snip out the wiper motor harness,it leads to a connector down by the Rocker on the passenger side(If I remember correctly).
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Old Dec 17, 2013 | 01:11 PM
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you know what, im thinking I am maybe confused.
Maybe its all NA cars have the wiper harness tied into the engine harness? Now I cant remember
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Old Dec 17, 2013 | 01:16 PM
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its all the cars have it in the same harness, s4 and s5 turbo or non, vert and coupe
they all have one wiring harness coming out the passenger side firewall, with the wipers in it.
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Old Dec 17, 2013 | 02:38 PM
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this is what happens when you get old, you forget things from one minute to the next
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Old Dec 17, 2013 | 11:24 PM
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Originally Posted by Rob XX 7
this is what happens when you get old, you forget things from one minute to the next
your not getting Old ...uh...........dammit....
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