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New rb20det cranking but not starting! Help!

[R31][Silhouette]
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[R31][Silhouette] Contributor

[R31][Silhouette]

Posted
Posted

Hi guys,

I've just put in an r32 rb20det into my r31 - it's all wired up, engine is cranking but wont start!!! Does anybody know what this could be?? I've checked the computer wired it - re-wired it! still the same problem! Is there something I could I could've done wrong in the wiring?? Anyone here had this problem before??

I'd really appreciate some help!!

Thanks

[R31][Silhouette] Contributor

[R31][Silhouette]

Posted
  • Author
Posted
First things first:

Is it getting fuel? Fuel pump working during cranking?

Are the injectors operating?

Is it getting spark?

Factory or Aftermarket ECU?

Factory ECU - it's definitely getting fuel and the fuel pump is working during cranking..

is there a way to test the injectors??

Dsturbd Grand Master

Dsturbd

Posted
Posted

Got a wiring diagram for the 32 eccs model in a r31.. if you get stuck can send a copy ..cost me big $$$ when i had my 31 wired when it came back from sparky we went right through it and copied it .. :D

[R31][Silhouette] Contributor

[R31][Silhouette]

Posted
  • Author
Posted
Got a wiring diagram for the 32 eccs model in a r31.. if you get stuck can send a copy ..cost me big $$$ when i had my 31 wired when it came back from sparky we went right through it and copied it ..  :D

Could you please send me a copy!! I'm desperate for help

[email protected]

BHDave Grand Master

BHDave

Posted
Posted

The factory computer wont fire unless it's got all the inputs from the MAF and Crankangle sensors working, I'd check that.

Also check that the computer is getting power while the key is in the cranking position, not just the ignition position.

Also check for spark. Romove a coilpack and put in a spare plug and see if it sparks when you crank.

blind_elk Grand Master

blind_elk

Posted
Posted

ECCS Pinouts:

AFM -> ECU:

1 blank

2 -> 27 Signal

3 -> 60 (Ground)

4 -> 26 Ground

5 -> 49 (+12V)

CAS -> ECU:

1 -> 41, 51 - 120 deg signal

2 -> 42, 52 - 1 deg signal

3 -> 49, 59 (+12V)

4 -> 60 (Ground)

slip Mentor

slip

Posted
Posted

Check that you have the fuse/fusible link wiring all correct. I blew the fusible link running off the positive terminal of the battery on my 31, itd crank but not start. Removing certain fusible links in the bay also did the trick.

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