32 Gtr Ecu Question

[Godzilla32]

I have a strange looking brown (what looks like) connector wired in just after the main ECU harness. It doesnt look original to me as wires looked to have been spliced in with the wires already coming out of the ECU connector. My car still has the 180km/h speed limit so it cant be something to do with that..

Any clues?

Thanks guys

Deren

PS: Car has no other modifications from one previous owner. Never been modified (other than possibly this).

[RB30-POWER]

thats normal, not sure what its for however.

its usually taped up with the loom so its hard to tell its even there.

[Godzilla32]

Yeah it was taped up b4. Thanks for the reply

[cowie165]

Deren only just logged in for your pm dude. I'll take a look at mine tomorrow It'd be a good time to see if I can get the ECU to settle the idle back to 800!

[Godzilla32]

Hey Mark, thanks for that. When i tried adjusting the screw on the ECU it didnt drop the idle that i could notice. Even though it says it should in the manual. See how you go. You may want to check all your throttle linkages are set right as one out of adjustment linkage can cause it to hold the respective butterflies open. Creating a high idle. BTW you wont get it down to 800 (would be nice) but they are only supposed to idle at 950 give or take 50. I guess it just due to the design of the throttles.

[RB30-POWER]

yeah 950rpm is target idle for rb26 when engine warm.

if you fiddle with anything to try and drop therpm below this the aac valve will just open more and compensate to maintain 950 +or- 50rpm

[Duncan]

those connectors are in every 32 loom I have seen. Would love to know what they are for?

[Godzilla32]

Cool thanks for that Duncan. Much appreciated. I would like to know what it does too. Deffinetly looks to be an afterthought to me, the way its spliced in..

[RB30-POWER]

33's have the same thing. Not sure about 34's?

If i had to guess i reckon it might be a diagnostic plug they use on the production line to check everything was wired up correctly, before it leaves the plant. But thats only a complete guess.

[700HP-GTR33]

Looks like Nissan plug in point for checking errors...etc.

What else could it be?

Cheers

[blind_elk]

They are a "common earth" connection. All the earth wires from the ECU and other bits of loom go into there, and 1 wire comes out and connects to the chassis.

[Duncan]

excellent, thanks blink-elk

[Godzilla32]

Ahh yes that does sound familiar! Someone may have once suggested/told me that. Cheers mate.