New rb20det cranking but not starting! Help!

[[R31][Silhouette]]

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

[Skyrine-Dave]

silly question... but is it getting fuel?

have you put the fuel feed and return in the right way ?

[blind_elk]

First things first:

Is it getting fuel? Fuel pump working during cranking?

Are the injectors operating?

Is it getting spark?

Factory or Aftermarket ECU?

[[R31][Silhouette]]

silly question... but is it getting fuel?

have you put the fuel feed and return in the right way ?

Yeah it's definetely getting fuel - double checked those.. I've got no idea what it could be

[[R31][Silhouette]]

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??

[BIGBLOCKR31COUPE]

Use the old screwdriver trick. Hold a screwdriver against the injectors one at a time and hold the handle against your ear. You should hear the injectors clicking as you crank the engine.

[[R31][Silhouette]]

I'll test the injectors tonight - hopefully they're working fine!

Does anyone know the pinouts for the airflow meter?

[BIGBLOCKR31COUPE]

www.meggala.com should have them.

[Dsturbd]

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 ..

[BIGBLOCKR31COUPE]

On his 'Parts & Info' page

[[R31][Silhouette]]

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 ..  

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

[email protected]

[BHDave]

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.

[RNS11Z]

If you got fuel, power and its cranking over check for spark. Pull the lead out and see if its sparking?? Also check the timing on the car.

[[R31][Silhouette]]

Thanks alot!! I'll check those out tonight - hopefully i can get it running!

[blind_elk]

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)

[[R31][Silhouette]]

I heard something about the ECU's in r32's that in the serial code they all have 77 in the code or something like that? Or is there a way to check that I have the right ECU..?

Cheers

[rsx84]

try www.rb20det.com that site has a lot of info my be able to shed some light on the problem!

[slip]

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.