R34 GTT Idle / Deceleration Problem

[MoMnDadGTR]

  On 20/01/2021 at 12:13 AM, GoHashiriya said:

That's alright. I have got a copy already, albeit only the R34 one which presumably doesnt cover my 32 trans. Thanks for the reminder though as it did slip my mind.  

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good on yeah mate. glad to help when i can hows things going with the car.

[GoHashiriya]

  On 20/01/2021 at 2:09 AM, MoMnDadGTR said:

good on yeah mate. glad to help when i can hows things going with the car.

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Honestly, It's gonna take me about a month to crack on with this job. I've gotta move house next month which will hold me back. I'm going to try and do coilovers, hicas lock and arms next weekend, plus get the wheels mounted and aligned. It's the wrong order I know, but I don't wanna have the car in an immovable state before moving.

I appreciate everyone's input so far and will be sure to update this when I make some progress.

[MoMnDadGTR]

yeah forsure bro dont rush it. i rushed my build spent way to much creates stress and takes the fun out of it. go at your own pace with fixing it and just enjoy. more to life than cars as much as we do love them.

[GoHashiriya]

Over the weekend I had a glance under the car and found the neutral switch - located just forward of the shifter - isn't plugged into anything.

I've tried searching but have found limited results indicating the colours or location of the wires I need to plug this into. If anyone can point me in the right direction it would be much appreciated.

The best description of the wiring I've found is this:

"When you (have) disconnected the loom from the gearbox, you should have disconnected 4 plugs. The green and black plugs on the PNP switch, the plug for the speedometer which is grey with an orange and a black wire, and a second speedometer plug, which is brown. I’ll start with the PNP plugs.

You only need the black plug. On the black plug, there are 3 wires that you need. The red wire for the reverse switch, this also needs a earth wire that you can splice from the earth (black wire) that goes into the speedometer sensor. The other two wires that you need are the brown with yellow stripe and green with white stripe. These are for the neutral switch."

The thread is regarding an R34 auto-manual swap. Do these wire colours apply across the board for the 34?

Apologies for the poor quality pic, it was relatively tight under the car. 

[GTSBoy]

There's another switch on the side of the gearbag, looks like the reverse switch. THAT is the neutral switch. What you have pointed to as the neutral switch is just the loom connector.

But more importantly, that gearbag doesn't look like an RB25DET box. Looks like RB20DET. That lettering cast in in behind the reverse switch says RP71, right?

Compare with below image of RB20 box

[GoHashiriya]

  On 25/01/2021 at 10:38 PM, GTSBoy said:

There's another switch on the side of the gearbag, looks like the reverse switch. THAT is the neutral switch. What you have pointed to as the neutral switch is just the loom connector.

But more importantly, that gearbag doesn't look like an RB25DET box. Looks like RB20DET. That lettering cast in in behind the reverse switch says RP71, right?

Compare with below image of RB20 box

 

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You're correct, it's an RB20 box - a questionable choice for a swap into an ER34. I know, I know - a budget for a suitable transmission is in the works.

The switch in question for me is the one just forward of the shifter: 

[GTSBoy]

yup