N326 ecu. Black/Blue wire? Pin 3B

Whizbang · 11-11-2013, 04:33 PM

87 N326 ecu and engine harness in GSLSE

black and blue wire, pin 3B on the ecu. does this need to go to anything particular? wiring diagram says it goes to the circuit opening relay but not sure how to incorporate that with the GSLSE stuff. Can i ground it out?

tracking down reasons for the engine not to start.

88turboii · 11-12-2013, 07:13 AM

3B is the 12V starter input signal for the ECU, it lets the ecu know you are trying to start the engine. im not exactly sure how it works, but the ecu may use this to use a priming fuel map instead of the base map. could be the reason your not starting

im not familiar with FB's, but you could wire it into the same wire that goes to the starter solenoid

mazpower · 11-12-2013, 01:18 PM

Hook it to the ignition switch so it's supplied with 12 volts only on Start. It does richen up the mixture on start up. We've cut this wire before when dealing with flooding issues on start up and it helped. The car still starts fine with it unhooked, at least in mild weather.

Rotary Evolution · 11-12-2013, 06:35 PM

it differentiates between the AFM signal and the basic cranking injection maps. i would hook it up unless the engine is having flooding issues after initial startup, in fact disconnecting it is just a bandaid for more serious problems.

***TitaniumTT*** · 11-12-2013, 08:47 PM

we had an issue with an S5 n/a swapped Miata that wouldn't always start, reconnected that wire and she banged off every time.

11-11-2013, 04:33 PM	#1
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp iTrader: (5) Posts: 3,190 Rep Power: 20	N326 ecu. Black/Blue wire? Pin 3B 87 N326 ecu and engine harness in GSLSE black and blue wire, pin 3B on the ecu. does this need to go to anything particular? wiring diagram says it goes to the circuit opening relay but not sure how to incorporate that with the GSLSE stuff. Can i ground it out? tracking down reasons for the engine not to start. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

11-12-2013, 07:13 AM	#2
88turboii destroy, rebuild, repeat Join Date: Feb 2008 Location: Charleston, SC iTrader: (0) Posts: 395 Rep Power: 17	3B is the 12V starter input signal for the ECU, it lets the ecu know you are trying to start the engine. im not exactly sure how it works, but the ecu may use this to use a priming fuel map instead of the base map. could be the reason your not starting im not familiar with FB's, but you could wire it into the same wire that goes to the starter solenoid __________________ 1993 RX-7 Touring MB, stockport 13B-REW, 9.4CR rotors, T04S 60-1/p-trim single turbo 1986 RX-7 Base project track beast

11-12-2013, 01:18 PM	#3
mazpower Rawr Bearclaw Join Date: Feb 2008 Location: The Souf iTrader: (1) Posts: 197 Rep Power: 17	Hook it to the ignition switch so it's supplied with 12 volts only on Start. It does richen up the mixture on start up. We've cut this wire before when dealing with flooding issues on start up and it helped. The car still starts fine with it unhooked, at least in mild weather. __________________ Illicit Performance Rotary building, porting, tuning, chassis dyno services www.illicitperformance.com

11-12-2013, 06:35 PM	#4
Rotary Evolution rotaryevolution.net Join Date: Feb 2011 Location: Las Vegas, NV iTrader: (0) Posts: 248 Rep Power: 14	it differentiates between the AFM signal and the basic cranking injection maps. i would hook it up unless the engine is having flooding issues after initial startup, in fact disconnecting it is just a bandaid for more serious problems. __________________ http://rotaryevolution.net

11-12-2013, 08:47 PM	#5
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son iTrader: (4) Posts: 4,581 Rep Power: 10	we had an issue with an S5 n/a swapped Miata that wouldn't always start, reconnected that wire and she banged off every time. __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**